subject:(RTM Resin transfer molding)

1. Aaboud, Bouchra. Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process.

Degree: Docteur es, Matériaux composites, 2016, Le Havre

URL: http://www.theses.fr/2016LEHA0023

►

Ce travail traite la problématique des bulles d’air contenues dans les pièces composites mises en œuvre par le procédé RTM. La modélisation des phénomènes de… (more)

Subjects/Keywords: Resin Transfer Molding (RTM); Bulles d'air; Phénomène de création; Transport de bulles; Resin Transfer Molding (RTM); Air bubbles; Compression; Creation; Bubbles transport

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Aaboud, B. (2016). Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process. (Doctoral Dissertation). Le Havre. Retrieved from http://www.theses.fr/2016LEHA0023

Chicago Manual of Style (16^th Edition):

Aaboud, Bouchra. “Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process.” 2016. Doctoral Dissertation, Le Havre. Accessed December 05, 2019. http://www.theses.fr/2016LEHA0023.

MLA Handbook (7^th Edition):

Aaboud, Bouchra. “Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process.” 2016. Web. 05 Dec 2019.

Vancouver:

Aaboud B. Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process. [Internet] [Doctoral dissertation]. Le Havre; 2016. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2016LEHA0023.

Council of Science Editors:

Aaboud B. Modélisation et simulation de la formation, la compression et le transport des bulles d'air en milieux fibreux à double échelle de pores : application au procédé RTM : Modeling and simulation of creation, compression, and transport of air bubbles within a fibrous media in dual scale of pores : application to the RTM process. [Doctoral Dissertation]. Le Havre; 2016. Available from: http://www.theses.fr/2016LEHA0023

2. Cazaux, Guillaume. Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix.

Degree: Docteur es, Matériaux, 2016, Le Havre

URL: http://www.theses.fr/2016LEHA0010

►

ALes travaux présentés sont une contribution à l’élaboration de composites à matrices thermoplastiques (TP) par un procédé de type Liquid Composite Molding non réactif pour… (more)

▼

ALes travaux présentés sont une contribution à l’élaboration de composites à matrices thermoplastiques (TP) par un procédé de type Liquid Composite Molding non réactif pour l’industrie automobile. La thèse a été effectuée dans le cadre du projet ANR TAPAS (ThermoplAstic Process for Automotive composite Structure) et s’est focalisée sur la mise en œuvre de plaques composites en renfort continu injectées avec des matrices polyamides 6,6 (PA 6,6) de hautes fluidités par Resin Transfer Molding. Le premier objectif est porté sur l’optimisation des cadences d’injection à travers l’étude de la perméabilité de préformes unidirectionnelles (UD) en fibres de verre et à hauts modules mécaniques. L’architecture de ces UD a ainsi été modifiée de manière à faciliter les écoulements. La perméabilité des différents tissus a pu être évaluée par un couplage entre des mesures expérimentales et une modélisation analytique basée sur un raisonnement à deux échelles de pores : l’écoulement intra et inter-torons. Le deuxième objectif sur lequel les travaux de thèse se sont concentrés s’est reposé sur la maitrise de l’état d’imprégnation par le bais d’une étude complète sur les phénomènes qui se déroulent à l’interface entre la fibre et la matrice à haute température. Plusieurs viscosités et formulations du PA 6,6 ainsi qu’un traitement appliqué sur le verre ont pu être caractérisés et discutés en termes de mouillabilité et d’adhésion. Enfin, la dernière partie du manuscrit présente les résultats obtenus sur les plaques mises en œuvre par RTM-TP en injection in-plane. Les conditions optimales de fonctionnement ainsi que les aspects de saturation, de santé matière et des propriétés mécaniques sont ensuite présentés et discutés.

The present work is a contribution to the thermoplastic composites manufacturing by a non-reactive Liquid Composite Molding process for the automotive industry. The thesis was carried out by the « ANR TAPAS » project (Thermoplastic Process for Automotive Composite Structure) and was focused on the elaboration of continious-fiber reinforced composites plates injected with a high-fluidity polyamide 6,6 (PA 6,6) by the Resin Transfer Molding process. The first goal was focused on increasing injection rates through the study of the in-plane permeability of unidirectional (UD) glass fiber fabrics with high mechanical modulus (HM). Experiments and modelling results showed that the permeability of these UD has been enhanced by modifying specific structural parameters of their architecture. The analytical model developped and used is based on a flow distribution according two differents scales of porosity : in and inter-yarns. The second part of the work was focused on the understanding of phenomenas that take place at the interface created between glass fiber and the matrix during the impregnation step. The wettability and adhesion of molten PA 6,6 dropped on a glass substrate is studied at different processing temperature. The last part introduce the thermoplastic composite plates elaborated by RTM-TP process. The optimum…

Advisors/Committee Members: Bréard, Joël (thesis director), Gomina, Moussa (thesis director).

Subjects/Keywords: Resin Transfer Molding (RTM); Liquid Composite Molding (LCM); Thermoplastic composites; RTM-TP process; Double-scale porosity approach; High-fluidity polyamids; Wettability pressure; Permeability

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cazaux, G. (2016). Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix. (Doctoral Dissertation). Le Havre. Retrieved from http://www.theses.fr/2016LEHA0010

Chicago Manual of Style (16^th Edition):

Cazaux, Guillaume. “Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix.” 2016. Doctoral Dissertation, Le Havre. Accessed December 05, 2019. http://www.theses.fr/2016LEHA0010.

MLA Handbook (7^th Edition):

Cazaux, Guillaume. “Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix.” 2016. Web. 05 Dec 2019.

Vancouver:

Cazaux G. Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix. [Internet] [Doctoral dissertation]. Le Havre; 2016. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2016LEHA0010.

Council of Science Editors:

Cazaux G. Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide : Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix. [Doctoral Dissertation]. Le Havre; 2016. Available from: http://www.theses.fr/2016LEHA0010

3. Waris, Marc. Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites.

Degree: Docteur es, Mécanique et Ingénierie, 2012, Saint-Etienne, EMSE

URL: http://www.theses.fr/2012EMSE0661

►

Les matériaux composites ont connu ces dernières années une forte croissance, croissance aujourd'hui renforcée par les nouvelles normes européenne visant à diminuer les émissions CO2… (more)

▼

Les matériaux composites ont connu ces dernières années une forte croissance, croissance aujourd'hui renforcée par les nouvelles normes européenne visant à diminuer les émissions CO2 d'ici 2020. La réalisation de pièces complexes peut poser de nombreuses problématiques de fabrication comme la formation de zones sèches, ou la création de distorsions géométriques. Les origines de ces problématiques sont souvent liées à un manque de connaissance et de maîtrise des phases d'imprégnation des renforts et de cuisson du matériau. L'amélioration de la robustesse des procédés nécessite d'avoir une connaissance fine des phénomènes physiques qui ont lieu lors de l'élaboration. Dans cette perspective, les procédés d'élaboration de matériaux composites ont été étudiés à travers la mise en place d'un démonstrateur de laboratoire dans le cadre du projet LCM Smart. Ce pilote d'injection a permis de valider des solutions d'instrumentation, à partir de capteurs innovants (OFS) développés en partenariat avec le laboratoire d'optique Hubert Curien.L'application de cette instrumentation dans le cadre du suivi du procédé RTM a démontré les capacités des OFS pour le suivi des caractéristiques physiques de la pièce (le front d'écoulement, la température, les déformations résiduelles et le degré de cuisson). La comparaison des caractéristiques mesurées avec des simulations numériques effectuées en collaboration avec ESI, a montré une bonne corrélation.Enfin, l'instrumentation a permis de mettre en évidence l’intérêt d’un outillage composite en HexTool pour la réduction des contraintes résiduelles liées à l'interaction outil/pièce.

A significant growth in production and consumption of composite materials can be seen recently; growth reinforced by the new European standards, aimed at reducing CO2 emissions by the year 2020.The producing of complex parts can cause many difficulties for manufacturing because of their geometries and / or their constituents (using of various materials). For example, dry zones or geometric distortion formation. The origins of these difficulties are often related to a lack of knowledge and control of the reinforcement's impregnation phases and material curing.Improving the robustness of the processes demands a detailed knowledge of physical phenomena that occur during the producing. For this, we studied the composite materials production through the implementation of a laboratory demonstrator in the project LCM Smart. This pilot injection was used to validate instrumentation solutions, from innovative sensors (OFS) developed in partnership with the optical laboratory Hubert Curien. The application of this instrumentation in the context of RTM process monitoring in the development of simple parts has demonstrated the capabilities of OFS to control physical characteristics of the part (the flow front, temperature, residual strain and curing degree). The comparison of the measured characteristics with numerical simulations carried out in collaboration with ESI showed a good correlation.Finally, instrumentation has…

Advisors/Committee Members: Drapier, Sylvain (thesis director).

Subjects/Keywords: Procédé d'élaboration composites; Suivi des procédés; Capteur à fibre optique (OFS); Resin Transfer Molding (RTM); Moule composite; Composites materials manufacturing; Monitoring process; Optical fiber sensor; Resin transfert molding; Composite mold

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Waris, M. (2012). Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites. (Doctoral Dissertation). Saint-Etienne, EMSE. Retrieved from http://www.theses.fr/2012EMSE0661

Chicago Manual of Style (16^th Edition):

Waris, Marc. “Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites.” 2012. Doctoral Dissertation, Saint-Etienne, EMSE. Accessed December 05, 2019. http://www.theses.fr/2012EMSE0661.

MLA Handbook (7^th Edition):

Waris, Marc. “Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites.” 2012. Web. 05 Dec 2019.

Vancouver:

Waris M. Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites. [Internet] [Doctoral dissertation]. Saint-Etienne, EMSE; 2012. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2012EMSE0661.

Council of Science Editors:

Waris M. Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances : Implementation, instrumentation, validation and modeling of RTM injection system for the manufacturing of structural high performances composites. [Doctoral Dissertation]. Saint-Etienne, EMSE; 2012. Available from: http://www.theses.fr/2012EMSE0661

4. Wendling, Audrey. Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming.

Degree: Docteur es, Mécanique, 2013, INSA Lyon

URL: http://www.theses.fr/2013ISAL0079

►

De nos jours, l’intégration de pièces composites dans les produits intéresse de plus en plus les industriels, particulièrement dans le domaine des transports. En effet,… (more)

▼

De nos jours, l’intégration de pièces composites dans les produits intéresse de plus en plus les industriels, particulièrement dans le domaine des transports. En effet, ces matériaux présentent de nombreux avantages, notamment celui de permettre une diminution de la masse des pièces lorsqu’ils sont correctement exploités. Pour concevoir ces pièces, plusieurs procédés peuvent être utilisés, parmi lesquels le RTM (Resin Transfer Molding) qui consiste en la mise en forme d’un renfort sec (préformage) avant une étape d’injection de résine. Cette étude concerne la première étape du procédé RTM, celle de préformage. L’objectif est de mettre en œuvre une stratégie efficace conduisant à la simulation par éléments finis de la mise en forme des renforts à l’échelle mésoscopique. A cette échelle, le renfort fibreux est modélisé par un enchevêtrement de mèches supposées homogènes. Plusieurs étapes sont alors nécessaires et donc étudiées ici pour atteindre cet objectif. La première consiste à créer un modèle géométrique 3D le plus réaliste possible des cellules élémentaires des renforts considérés. Elle est réalisée grâce à la mise en œuvre d’une stratégie itérative basée sur deux propriétés. D’une part, la cohérence, qui permet d’assurer une bonne description du contact entre les mèches, c'est-à-dire, que le modèle ne contient ni vides ni interpénétrations au niveau de la zone de contact. D’autre part, la variation de la forme des sections de la mèche le long de sa trajectoire qui permet de coller au mieux à la géométrie évolutive des mèches dans le renfort. Grâce à ce modèle et à une définition libre par l’utilisateur de l’architecture tissée, un modèle représentatif de tout type de renfort (2D, interlock) peut être obtenu. La seconde étape consiste à créer un maillage hexaédrique 3D cohérant de ces cellules élémentaires. Basé sur la géométrie obtenue à la première étape. L’outil de maillage créé permet de mailler automatiquement tout type de mèche, quelle que soit sa trajectoire et la forme de ses sections. La troisième étape à franchir consiste, à partir du comportement mécanique du matériau constitutif des fibres et de la structure de la mèche, à mettre en place une loi de comportement du matériau homogène équivalent à un matériau fibreux. Basé sur les récents développements expérimentaux et numériques en matière de loi de comportement de structures fibreuses, un nouveau modèle de comportement est présenté et implémenté. Enfin, une étude des différents paramètres intervenant dans les calculs en dynamique explicite est réalisée. Ces deux derniers points permettent à la fois de faire converger rapidement les calculs et de se rapprocher de la réalité de la déformation des renforts. L’ensemble de la chaîne de modélisation/simulation des renforts fibreux à l’échelle mésoscopique ainsi créée est validée par comparaison d’essais numériques et expérimentaux de renforts sous sollicitations simples.

Nowadays, manufacturers, especially in transport, are increasingly interested in integrating composite parts into their products.…

Advisors/Committee Members: Boisse, Philippe (thesis director), Vidal-Sallé, Emmanuelle (thesis director).

Subjects/Keywords: Mécanique appliquée; Conception; Pièces mécaniques; Rtm; Resin transfert molding; Préformage; Renforts tissés; Mise en forme; Imprimante 3 D; Modélisation 3 D; Modélisation mésoscopique; Simulation; Woven reinforcement; Composites; Forming; Mesoscopic approach; Simulation; RTM - Resin transfer molding; RTM process; 3D printing; 621.807 2

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wendling, A. (2013). Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2013ISAL0079

Chicago Manual of Style (16^th Edition):

Wendling, Audrey. “Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming.” 2013. Doctoral Dissertation, INSA Lyon. Accessed December 05, 2019. http://www.theses.fr/2013ISAL0079.

MLA Handbook (7^th Edition):

Wendling, Audrey. “Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming.” 2013. Web. 05 Dec 2019.

Vancouver:

Wendling A. Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming. [Internet] [Doctoral dissertation]. INSA Lyon; 2013. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2013ISAL0079.

Council of Science Editors:

Wendling A. Simulation à l'échelle mésoscopique de la mise en forme de renforts de composites tissés : Mesoscopic simulation of weaving composite reinforcements forming. [Doctoral Dissertation]. INSA Lyon; 2013. Available from: http://www.theses.fr/2013ISAL0079

5. Ghodhbani, Nacef. Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing.

Degree: Docteur es, Acoustique, 2016, Le Havre

URL: http://www.theses.fr/2016LEHA0008

►

Les transducteurs ultrasonores font l'objet de nombreux développements en contrôle non-destructif (CND) industriel. Utilisé ponctuellement et périodiquement, le CND ultrasonore permet d'établir des diagnostics sur… (more)

▼

Les transducteurs ultrasonores font l'objet de nombreux développements en contrôle non-destructif (CND) industriel. Utilisé ponctuellement et périodiquement, le CND ultrasonore permet d'établir des diagnostics sur la santé des matériaux. La caractérisation ultrasonore en temps réel constitue un outil de surveillance de l'évolution des propriétés physiques lors de la fabrication des matériaux composites. Dans ce contexte, des études sont menées au LOMC pour optimiser le procédé de fabrication des matériaux composites par RTM (Resin Transfer Molding) afin d’améliorer la qualité du produit. Ce travail de thèse consiste à développer des méthodes ultrasonores pour le suivi des propriétés viscoélastiques d’un composite pendant la phase de production. Les propriétés viscoélastiques sont étudiées à l’aide de modèles théoriques, de simulations numériques et de résultats expérimentaux. Des études de calibration ont été menées afin d’étudier les facteurs d’influence sur le suivi de propriétés ultrasonores lors de la mise en oeuvre d’un procédé RTM. Le suivi des paramètres viscoélastiques de résines époxy est effectué dans un premier temps à basse température au cours d'une polymérisation isotherme et d’une post-cuisson. Ensuite, une approche basée sur la méthode de caractérisation en émission/transmission a été développée afin d’étudier le comportement à haute température. La modélisation de la réponse électroacoustique par série de Debye (DSM) a été effectuée en se basant sur des approches analytiques. L’utilisation des transducteurs multiéléments permet la localisation et le dimensionnement de défauts lors du déplacement de fibres de carbone dans une résine liquide, entre des moules.

The developments based on ultrasonic transducers are nowadays numerous in the industrial non-destructive testing (NDT). Used punctually and periodically, the ultrasonic NDT is used for health diagnostics of materials. Ultrasonic characterization in real time allows a physical properties monitoring during the manufacturing of composite materials. In this context, studies are conducted in LOMC in view to optimize the manufacturing process of composite materials using RTM (Resin Transfer Molding) in order to improve the product quality. This work consists to develop ultrasonic methods for the monitoring of viscoelastic properties during the production phase of composites. The viscoelastic properties are studied using theoretical models, numerical simulations and experimental measurements. Calibration studies were carried out to study the influencing factors on the monitoring of ultrasonic properties during the RTM process. The monitoring of viscoelastic parameters of epoxy resins is performed in a first time at low temperature during an isothermal polymerization and a post-curing. Then, an approach based on the transmission mode characterization was developed to study high-temperature behavior. Based on analytical approaches, the electroacoustic response was simulated by Debye series method (DSM). The use of phased array transducers was…

Advisors/Committee Members: Duflo, Hugues (thesis director).

Subjects/Keywords: Contrôle non destructif; Evaluation non destructive; Réponse électroacoustique; Procédé RTM; Modélisation DSM; Ultrasounds; Non-destructive testing (NDT); Debye Series Method; Resin Transfer Molding (RTM); Viscoelasticity; Composites; Electroacoustic response

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghodhbani, N. (2016). Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing. (Doctoral Dissertation). Le Havre. Retrieved from http://www.theses.fr/2016LEHA0008

Chicago Manual of Style (16^th Edition):

Ghodhbani, Nacef. “Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing.” 2016. Doctoral Dissertation, Le Havre. Accessed December 05, 2019. http://www.theses.fr/2016LEHA0008.

MLA Handbook (7^th Edition):

Ghodhbani, Nacef. “Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing.” 2016. Web. 05 Dec 2019.

Vancouver:

Ghodhbani N. Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing. [Internet] [Doctoral dissertation]. Le Havre; 2016. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2016LEHA0008.

Council of Science Editors:

Ghodhbani N. Contrôle et suivi des propriétés visco-élastiques d'un composite en cours de fabrication : Control and monitoring of viscoelastic properties of a composite during manufacturing. [Doctoral Dissertation]. Le Havre; 2016. Available from: http://www.theses.fr/2016LEHA0008

Delft University of Technology

6. Smeets, R.R. A Natural Fibre Composite Longboard:.

Degree: 2013, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:34cce1d5-dc3d-4ccc-a624-91602b6fa259

► A promising alternative to glass fibre reinforced plastics are composites based on natural fibres and biobased plastics, so called Natural Fibre Composites. NPSP composites is… (more)

Subjects/Keywords: Natural Fibre Composites; Longboard; NFC; Flax; Resin Transfer Moulding; RTM

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Smeets, R. R. (2013). A Natural Fibre Composite Longboard:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:34cce1d5-dc3d-4ccc-a624-91602b6fa259

Chicago Manual of Style (16^th Edition):

Smeets, R R. “A Natural Fibre Composite Longboard:.” 2013. Masters Thesis, Delft University of Technology. Accessed December 05, 2019. http://resolver.tudelft.nl/uuid:34cce1d5-dc3d-4ccc-a624-91602b6fa259.

MLA Handbook (7^th Edition):

Smeets, R R. “A Natural Fibre Composite Longboard:.” 2013. Web. 05 Dec 2019.

Vancouver:

Smeets RR. A Natural Fibre Composite Longboard:. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2019 Dec 05]. Available from: http://resolver.tudelft.nl/uuid:34cce1d5-dc3d-4ccc-a624-91602b6fa259.

Council of Science Editors:

Smeets RR. A Natural Fibre Composite Longboard:. [Masters Thesis]. Delft University of Technology; 2013. Available from: http://resolver.tudelft.nl/uuid:34cce1d5-dc3d-4ccc-a624-91602b6fa259

University of Victoria

7. Keulen, Casey James. Design and manufacturing of composite structures using the resin transfer molding technique.

Degree: Dept. of Mechanical Engineering, 2007, University of Victoria

URL: http://hdl.handle.net/1828/294

► Composite materials have the potential to revolutionize life in the 21st century. They are contributing significantly to developments in aerospace, hydrogen fuel cells, electronics and… (more)

Subjects/Keywords: Composite Materials; Resin Transfer Molding; RTM; UVic Subject Index::Sciences and Engineering::Engineering::Mechanical engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Keulen, C. J. (2007). Design and manufacturing of composite structures using the resin transfer molding technique. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/294

Chicago Manual of Style (16^th Edition):

Keulen, Casey James. “Design and manufacturing of composite structures using the resin transfer molding technique.” 2007. Masters Thesis, University of Victoria. Accessed December 05, 2019. http://hdl.handle.net/1828/294.

MLA Handbook (7^th Edition):

Keulen, Casey James. “Design and manufacturing of composite structures using the resin transfer molding technique.” 2007. Web. 05 Dec 2019.

Vancouver:

Keulen CJ. Design and manufacturing of composite structures using the resin transfer molding technique. [Internet] [Masters thesis]. University of Victoria; 2007. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/1828/294.

Council of Science Editors:

Keulen CJ. Design and manufacturing of composite structures using the resin transfer molding technique. [Masters Thesis]. University of Victoria; 2007. Available from: http://hdl.handle.net/1828/294

8. Van den Broek d'Obrenan, Ghislain. Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites.

Degree: Docteur es, Matériaux polymère, 2011, INSA Lyon

URL: http://www.theses.fr/2011ISAL0112

►

Le procédé « Resin Transfer Molding » (RTM) est très largement utilisé pour la production industrielle de matériaux composites à matrice thermodurcissable. En effet, de… (more)

▼

Le procédé « Resin Transfer Molding » (RTM) est très largement utilisé pour la production industrielle de matériaux composites à matrice thermodurcissable. En effet, de nombreux domaines tels que l’automobile et l’aéronautique l’emploi couramment. Dans ce travail nous avons adapté ce procédé à la mise en œuvre de matériaux composites à matrice thermoplastique afin de répondre aux critères écologiques et économiques imposés aux industries. Pour cela plusieurs étapes ont été nécessaires. La première fut la sélection d’une chimie robuste, adaptée aux exigences du procédé (faible viscosité initiale du système réactif, temps de polymérisation court, etc). La chimie choisie fut la polymérisation anionique par ouverture de cycle de l’ε-caprolactame dans le but d’obtenir du polyamide-6 (PA-6). Une étude rhéo-cinétique ainsi que les caractérisations physico-chimiques d’un PA-6 obtenu au laboratoire furent réalisé. A la suite de cette étape, des essais en conditions de procédé ont été effectué avec l’utilisation d’un équipement pilote dédié. Ces essais furent la source de modifications et d’optimisations de certains paramètres du procédé. La troisième étape, a consisté à la production de pièces composites avec un renfort de type : tissu unidirectionnel de verre. Cette production fut suivie de tests mécaniques et physico-chimiques afin d’évaluer les propriétés de ces pièces. Différents ensimages de tissu ont été étudiés avec, pour objectif, la détermination de celui offrant les meilleures propriétés. Durant cette étude nous avons observé que la nature de l’ensimage impactait peu la chimie. Pour finir, nous avons mis en place un ensimage réactif qui permettra une meilleure interaction fibre/matrice.

The "Resin Transfer Molding" (RTM) process is very largely used for the industrial production of composites materials with thermoset matrix. Indeed, it’s used by many fields such as the automotive and aeronautics. In this work we adapted this process to the manufacture of composite materials with thermoplastic matrix in order to answer the ecological and economic criteria imposed on industries. For that several steps were necessary. The first was the selection of a robust chemistry, adapted to the requirements of the process (low initial viscosity of the reactive system, polymerization time, etc). The selected chemistry, was the ring opening polymerization of ε - caprolactam to obtain polyamide-6 (PA-6). Rhéo-kinetics studies, as well as the physicochemical characterizations of a Pa-6 obtained at the laboratory were carried out. Following this step, tests in conditions of process were carried out with the use of dedicated pilot equipment. These tests were the source of modifications and optimizations of certain parameters of the process. The third step, consisted with the production of composite parts with a reinforcement of the type: unidirectional glass fabric. This production was followed mechanical and physico-chemical tests in order to evaluate the properties of these parts. Various sizing of the glass fabric were studied…

Advisors/Committee Members: Maazouz, Abderrahim (thesis director).

Subjects/Keywords: Composite à matrice polymère; Matrice thermoplastique; Moulage par transfert de résine; Polyamide; Polymérisation anionique; Renfort tissé; Polymer matrix composite; Thermoplastic matrix; RTM - Resin transfer molding; Polyamide; Anionic polymerization; Woven reinforcement; 668.416 072

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Van den Broek d'Obrenan, G. (2011). Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2011ISAL0112

Chicago Manual of Style (16^th Edition):

Van den Broek d'Obrenan, Ghislain. “Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites.” 2011. Doctoral Dissertation, INSA Lyon. Accessed December 05, 2019. http://www.theses.fr/2011ISAL0112.

MLA Handbook (7^th Edition):

Van den Broek d'Obrenan, Ghislain. “Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites.” 2011. Web. 05 Dec 2019.

Vancouver:

Van den Broek d'Obrenan G. Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites. [Internet] [Doctoral dissertation]. INSA Lyon; 2011. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2011ISAL0112.

Council of Science Editors:

Van den Broek d'Obrenan G. Adaptation du procédé RTM (Moulage par Transfert de Résine) à la mise en œuvre de matériaux composites à matrice thermoplastique : The adaptation of the RTM (Resin Transfer Molding) process to manufacture thermoplastic-based composites. [Doctoral Dissertation]. INSA Lyon; 2011. Available from: http://www.theses.fr/2011ISAL0112

9. Fontanier, Jean-Charles. Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM.

Degree: Docteur es, Matériaux polymères et composites, 2017, Lyon

URL: http://www.theses.fr/2017LYSEI024

►

Le contexte environnemental actuel conduit les constructeurs automobiles à diminuer les émissions globales de CO2. Afin de répondre à cet objectif, plusieurs voies sont accessibles… (more)

▼

Le contexte environnemental actuel conduit les constructeurs automobiles à diminuer les émissions globales de CO2. Afin de répondre à cet objectif, plusieurs voies sont accessibles mais l’allègement de la structure du véhicule apparaît comme la solution la plus prometteuse grâce à la substitution des pièces métalliques par des matériaux composites et plus particulièrement des composites thermoplastiques à matrices acryliques. Cette étude s’est donc intéressée à développer et caractériser plusieurs formulations à base acrylique afin d’identifier les différents leviers (choix du monomère / condition de polymérisation) permettant d’atteindre une polymérisation rapide (< 3 à 5 min) adaptée aux hautes cadences de l’industrie automobile. Le moulage par transfert de résine (RTM) ayant été choisi comme procédé de mise en œuvre, une seconde étape de travail a été de caractériser l’évolution de la viscosité au cours de la polymérisation. En disposant des mesures cinétiques et rhéologiques, il a aussi été possible, par modèle inverse, de proposer un suivi in-situ de la polymérisation via la corrélation des données par des mesures diélectrométriques. Puis, dans une optique d’amélioration de la tenue chimique du PMMA, la synthèse d’un polymère réversible présentant alternativement une structure tridimensionnelle et une structure linéaire a été réalisée. Ainsi, grâce à la préparation d’un comonomère présentant des fonctions Diels-Alder, il a été possible d’obtenir un polymère ayant la capacité d’emprunter les propriétés de résistance chimique des réseaux thermodurcissables tout en conservant l’aptitude à la transformation des thermoplastiques. Enfin, une dernière étude s’est portée sur le renforcement du PMMA par mélange avec différents polymères. Ainsi, grâce à un choix judicieux de polymères présentant des caractéristiques physico-chimiques intéressantes, il a été possible d’améliorer significativement la tenue en température mais également la résistance au choc de la matrice acrylique développée.

Nowadays, polymer matrix composites are widely used for aerospace, automotive, railway and sport industries. For similar structural properties, these materials coul be very attractive since they could be 30 to 40% lighter than metallic counterparts. In the current context of environmental development issues, thermoplastic-based composites, (in our case acrylic matrix based one), can be considered as they can be easily recycled as opposed to thermoset-based ones. Furthermore, they could exhibit good mechanical properties, i.e. stiffness and impact resistance, enabling them to be relevant for many applications. Manufacturing structural composites requires to produce parts without defects having complex geometries. For this purpose Resin Transfer Molding (RTM) has been selected to process such composites. Indeed, it corresponds to a low temperature closed-mold process allowing for manufacturing complex continuous fiber-based-reinforced parts. However, it requires precursors with a very low viscosity (η < 1 Pa.s) to ensure a good…

Advisors/Committee Members: Gérard, Jean-François (thesis director), Lortie, Frédéric (thesis director).

Subjects/Keywords: Composite à matrice polymère; Polymère thermoplastique; Matrice acrylique; Polymérisation radicalaire; Moulage par transfert de résine; Réaction de Diels-Adler; Cinétique de polymérisation; Renforcement; Polymer matrix composite; Thermoplastics; Acrylic matrix; Free radical polymerization; RTM - Resin transfer molding; Diels-Alder reaction; Kinetics of polymerization; Reinforcement; 620.192 118 072

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fontanier, J. (2017). Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2017LYSEI024

Chicago Manual of Style (16^th Edition):

Fontanier, Jean-Charles. “Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM.” 2017. Doctoral Dissertation, Lyon. Accessed December 05, 2019. http://www.theses.fr/2017LYSEI024.

MLA Handbook (7^th Edition):

Fontanier, Jean-Charles. “Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM.” 2017. Web. 05 Dec 2019.

Vancouver:

Fontanier J. Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM. [Internet] [Doctoral dissertation]. Lyon; 2017. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2017LYSEI024.

Council of Science Editors:

Fontanier J. Développement d'un système réactif pour composites acryliques par procédé RTM : Acrylic thermoplastic-based composites as processed by RTM. [Doctoral Dissertation]. Lyon; 2017. Available from: http://www.theses.fr/2017LYSEI024

University of Victoria

10. Keulen, Casey James. Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers.

Degree: Dept. of Mechanical Engineering, 2012, University of Victoria

URL: http://hdl.handle.net/1828/4170

► Advanced composite materials are becoming increasingly more valuable in a plethora of engineering applications due to properties such as tailorability, low specific strength and stiffness… (more)

▼ Advanced composite materials are becoming increasingly more valuable in a plethora of engineering applications due to properties such as tailorability, low specific strength and stiffness and resistance to fatigue and corrosion. Compared to more traditional metallic and ceramic materials, advanced composites such as carbon, aramid or glass reinforced plastic are relatively new and still require research to optimize their capabilities. Three areas that composites stand to benefit from improvement are processing, damage detection and life prediction. Fiber optic sensors and piezoelectric transducers show great potential for advances in these areas. This dissertation presents the research performed on improving the efficiency of advanced composite materials through the use of embedded fiber optic sensors and surface mounted piezoelectric transducers. Embedded fiber optic sensors are used to detect the presence of resin during the injection stage of resin transfer molding, monitor the degree of cure and predict the remaining useful life while in service. A sophisticated resin transfer molding apparatus was developed with the ability of embedding fiber optics into the composite and a glass viewing window so that resin flow sensors could be verified visually. A novel technique for embedding optical fiber into both 2- and 3-D structures was developed. A theoretical model to predict the remaining useful life was developed and a systematic test program was conducted to verify this model. A network of piezoelectric transducers was bonded to a composite panel in order to develop a structural health monitoring algorithm capable of detecting and locating damage in a composite structure. A network configuration was introduced that allows for a modular expansion of the system to accommodate larger structures and an algorithm based on damage progression history was developed to implement the network. The details and results of this research are contained in four manuscripts that are included in Appendices A-D while the body of the dissertation provides background information and a summary of the results. Advisors/Committee Members: Suleman, Afzal (supervisor), Yildiz, Mehmet (supervisor).

Subjects/Keywords: composite materials; structural health monitoring; fiber bragg grating; resin transfer molding

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Keulen, C. J. (2012). Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers. (Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/4170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Keulen, Casey James. “Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers.” 2012. Thesis, University of Victoria. Accessed December 05, 2019. http://hdl.handle.net/1828/4170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Keulen, Casey James. “Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers.” 2012. Web. 05 Dec 2019.

Vancouver:

Keulen CJ. Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers. [Internet] [Thesis]. University of Victoria; 2012. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/1828/4170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Keulen CJ. Process and structural health monitoring of composite structures with embedded fiber optic sensors and piezoelectric transducers. [Thesis]. University of Victoria; 2012. Available from: http://hdl.handle.net/1828/4170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Agogué, Romain. Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process.

Degree: Docteur es, Génie mécanique, 2011, Université d'Orléans

URL: http://www.theses.fr/2011ORLE2006

►

Cette thèse s’intéresse à la fabrication de pièces composites par le procédé Resin Transfert Molding (ou RTM), appliquée à des tubes de protection thermiques. Plus… (more)

▼

Cette thèse s’intéresse à la fabrication de pièces composites par le procédé Resin Transfert Molding (ou RTM), appliquée à des tubes de protection thermiques. Plus particulièrement, cette thèse vise à démontrer la faisabilité d’utiliser ce procédé pour la fabrication cette pièce complexe. La phase d’imprégnation de préformes sèches est plus particulièrement étudiée. Après mise en oeuvre, cette pièce peut présenter des défauts tels que de la porosité ou des déplacements de plis constituant la préforme. L’objectif de cette thèse est donc de comprendre l’origine de ces défauts et de minimiser voire de d’empêcher leur apparition. Pour cela, une démarche expérimentale a été mise en place. Celle ci comprend la réalisation d’un pilote de laboratoire permettant d’appliquer différentes conditions d’imprégnation aux préformes considérées. La perméabilité des renforts considérés a aussi été évaluée à différentes échelles grâce à l’utilisation de moyen dédiés à l’échelle macroscopique (banc de perméabilité planaire et transverse), et grâce à l’utilisation d’un code de calcul se basant sur des images de tomographie synchrotron à l’échelle microscopique. Enfin, une analyse de la qualité des prototypes réalisés a été menée en suivant des procédures mises en place lors de ce projet et les résultats analysés et mis en relation avec les conditions de mise en oeuvre. Cette approche expérimentale est couplée aux simulations numériques de la phase d’imprégnation que nous avons aussi mise en oeuvre au cours de cette thèse. Par l’utilisation combinée de la simulation numérique et des essais expérimentaux, nous avons défini des critères estimant le risque d’apparition des défauts. Ces critères ont montré leur efficacité sur les solutions innovantes que nous avons proposées puisque répondant aux exigences du cahier des charges industriel.

This work concerns the manufacturing of composite parts using the Resin Transfer Molding (RTM) process. A major goal of this study is to test the feasibility of using this process to manufacture a thick tubular part with a complex shape. This study concerns the different stages of the process with an important focus on the injection step of dry preforms. The goal of this thesis is to understand the generation of manufacturing defect (mainly porosity and preform deformation) that possibly takes place during the injection step to avoid them. An experimental procedure is proposed. An experimental setup was developed to study the influence of the different process parameters on the quality of the composite parts. The determination of the longitudinal and through the thickness permeabilities was conducted experimentally on sheared and un-sheared samples. An alternative technique to estimate the permeability is presented based on simulation software using X-ray tomography images at the microscale. At last, a quality control procedure was developed and applied to the tubes manufactured within this project. This experimental work was compared to numerical simulations of the injection stage. Using both numerical…

Advisors/Committee Members: Soulat, Damien (thesis director).

Subjects/Keywords: Tubes de protection thermiques; Procédé resin transfert molding; Couplage hydromécanique; Thick tubular part; Resin transfer molding process; Hydro-mechanical coupling

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Agogué, R. (2011). Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process. (Doctoral Dissertation). Université d'Orléans. Retrieved from http://www.theses.fr/2011ORLE2006

Chicago Manual of Style (16^th Edition):

Agogué, Romain. “Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process.” 2011. Doctoral Dissertation, Université d'Orléans. Accessed December 05, 2019. http://www.theses.fr/2011ORLE2006.

MLA Handbook (7^th Edition):

Agogué, Romain. “Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process.” 2011. Web. 05 Dec 2019.

Vancouver:

Agogué R. Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process. [Internet] [Doctoral dissertation]. Université d'Orléans; 2011. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2011ORLE2006.

Council of Science Editors:

Agogué R. Analyse expérimentale et numérique de la fabrication de pièces composites par le procédé RTM : Experimental and numerical study of the manufacturing of composite parts using the RTM process. [Doctoral Dissertation]. Université d'Orléans; 2011. Available from: http://www.theses.fr/2011ORLE2006

12. Lutz, Vincent. Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy.

Degree: Docteur es, Matériaux polymères et composites, 2014, INSA Lyon

URL: http://www.theses.fr/2014ISAL0039

►

L’utilisation de composites à matrice thermodurcissable et fibres continues est en constante progression dans le secteur aéronautique, ferroviaire, et automobile. Afin d’améliorer les composites obtenus,… (more)

▼

L’utilisation de composites à matrice thermodurcissable et fibres continues est en constante progression dans le secteur aéronautique, ferroviaire, et automobile. Afin d’améliorer les composites obtenus, notamment leur résistance à l’impact et leur conductivité électrique, des nanocharges organiques ou inorganiques peuvent être ajoutées. Les nanotubes de carbone (CNT) font partie des candidats les plus prometteurs pour le renforcement de composites à multi-échelle. Cependant, il s’avère difficile de contrôler la dispersion, la répartition et l’orientation des CNT, après les avoir mélangés aux prépolymères. Une nouvelle stratégie d’insertion des CNT dans un composite consiste à combiner des fibres de CNT avec des fibres de carbone. L’orientation et l’organisation structurelle des CNT au sein de la fibre permettent d’obtenir d’excellentes propriétés mécaniques et électriques. Dans notre étude, les propriétés de fibres contenant exclusivement des CNT, obtenues par direct spinning, ont été comparées à celles de fibres de carbone (non-ensimées, ensimées, et CNT en surface). Différentes interfaces entre les fibres de CNT, fibres de carbone et deux types de matrices époxy (de TG très différentes) ont été générées et testées par des essais de fragmentation de fibre dans la matrice. La contrainte de cisaillement interfaciale fibre/matrice a été évaluée afin de déterminer l’influence des diverses fibres et ensimages sur les performances mécaniques de composites à matrice organique et à fibres continues. En outre, la nature de l’adhésion et la qualité de l’interphase entre la matrice et la fibre ont été caractérisées par plusieurs techniques d’analyses et d’observations à multi-échelles.

Nowadays, polymer-matrix composites reinforced with carbon fibers are increasingly used in the whole transport sector (aerospace, automotive and railway industries). However, the obtained parts still suffer from low impact resistance and low damage tolerance. To improve these properties, the matrix precursors have to be combined with organic or inorganic compounds to lead to multi-phased matrices. Among them, carbon nanotubes (CNT) are especially promising for targeting multi-scale reinforcement. Since high quality of the parts are required, continuous-fibers-reinforced composites can be produced by resin transfer molding (RTM) which also offers a reduced cost if compared with high temperature- and high pressure-based processes. However, RTM requires a very low viscosity of the polymer precursors and CNT-filled precursors are far too viscous to be injected on dry performs. In addition, this strategy does not allow for a control of the CNT location and orientation in the final part. In this study, innovative ways have been developed to insert CNT in the preform with local positioning and defined orientation. Deliveries of CNT in the matrix, from a neat carbon multi-nanotubes fiber produced by direct spinning, or from a CNT grown on carbon fiber were investigated in two types of epoxy matrices (with very different TG). Different polymer…

Advisors/Committee Members: Gérard, Jean-François (thesis director).

Subjects/Keywords: Composite à matrice polymère; Polymère thermodurcissable; Nanocomposite; Nanotube de carbone; Fibre de carbone; Moulage par transfert de résine; Test de fragmentation; Contrainte de cisaillement interfacial; Interface; Interphase; Emission acoustique; Spectroscopie Raman; Polymer matrix composite; Thermosetting polymer; Nanocomposite; Carbon nanotube; Carbon fiber; RTM - Resin transfer molding; Fragmentation test; Interfacial shear strength; Interface; Interphase; Acoustic emission; Raman Spectroscopy; 620.192 118 072

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lutz, V. (2014). Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2014ISAL0039

Chicago Manual of Style (16^th Edition):

Lutz, Vincent. “Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy.” 2014. Doctoral Dissertation, INSA Lyon. Accessed December 05, 2019. http://www.theses.fr/2014ISAL0039.

MLA Handbook (7^th Edition):

Lutz, Vincent. “Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy.” 2014. Web. 05 Dec 2019.

Vancouver:

Lutz V. Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy. [Internet] [Doctoral dissertation]. INSA Lyon; 2014. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2014ISAL0039.

Council of Science Editors:

Lutz V. Carbon nanotubes as nanofillers or fibers for multifunctional epoxy-based composites : Nanotubes de carbone sous forme de nanoparticules ou fibres pour les composites multifonctionnels fibre de carbone/matrice époxy. [Doctoral Dissertation]. INSA Lyon; 2014. Available from: http://www.theses.fr/2014ISAL0039

Université de Bordeaux I

13. Mouton, Serge. Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti.

Degree: Docteur es, Mécanique, 2010, Université de Bordeaux I

URL: http://www.theses.fr/2010BOR14029

► L’intégration des contraintes d’industrialisation, des pièces en matériaux composites, en conception préliminaire, est un enjeu majeur de la compétitivité des entreprises, et s’inscrit dans une… (more)

▼ L’intégration des contraintes d’industrialisation, des pièces en matériaux composites, en conception préliminaire, est un enjeu majeur de la compétitivité des entreprises, et s’inscrit dans une démarche de développement durable. Un travail de captation et de mise en forme de la connaissance industrielle a permis de développer une stratégie d’optimisation. Cette stratégie repose sur une approche multi-métiers, elle permet d’estimer la performance technique et économique d’une solution d’industrialisation. L’estimation de la performance est basée sur l’évaluation, pour chaque solution d’industrialisation, du risque de rupture du composant assemblé, du niveau d’intégration fonctionnelle et du coût de fabrication. La définition de la meilleure alternative est obtenue par la comparaison de la performance de solutions et s’appuie sur des méthodes et outils d’aide à la décision. Le risque de rupture est estimé à partir des écarts entre des caractéristiques de la pièce fabriquée par procédé Resin Transfer Molding (RTM) et les caractéristiques nominales. Les caractéristiques de la pièce fabriquée prises en compte sont : - les écarts géométriques, - les écarts de caractéristiques mécaniques. Dans l’industrie aéronautique, certaines pièces de structure en matériaux composites sont réalisées par le procédé RTM. Dans ce type de mise en forme, les caractéristiques mécaniques du composant sont directement liées au niveau d’imprégnation de la préforme. Dans le travail de thèse, les défauts d’imprégnation sont identifiés comme des écarts volumiques d’imprégnation. Ces écarts ont pour conséquence d’altérer les propriétés mécaniques du matériau qui constitue la pièce. L’estimation des écarts volumiques d’imprégnation est obtenue à partir de l’analyse des résultats de la simulation par éléments finis de l’écoulement de résine dans le renfort fibreux (logiciel Pam RTM®). La géométrie de la pièce obtenue par procédé RTM diffère de la géométrie nominale, cet écart est due en partie aux différences entre les caractéristiques physiques des constituants du matériau composite. Les variations géométriques de la pièce fabriquée sont identifiées comme des écarts géométriques de fabrication. Les écarts géométriques sont compensés, lors de la phase d’assemblage, par des déformations garantissant les contacts avec les pièces adjacentes. Ces déformations génèrent un état de contraintes mécaniques au sein de la pièce. La quantification de l’état de contraintes mécaniques est obtenue à partir d’une simulation thermomécanique par éléments finis réalisée par le logiciel Samcef®. L’aide à la décision est basée sur l’étude combinée de l’état de contraintes mécaniques due à la compensation des écarts géométriques et de l’incidence des écarts volumiques d’imprégnation sur les propriétés mécaniques de la pièce. Trois critères permettent d’estimer le risque de rupture du composant assemblé : un critère de rupture des matériaux composites quantifie le risque de rupture, les deux autres critères, prenant en compte les défauts d’imprégnation, majorent le risque… Advisors/Committee Members: Sebastian, Patrick (thesis director), Teissandier, Denis (thesis director).

Subjects/Keywords: Conception préliminaire; Simulations éléments finis; Optimisation; Assemblage; Matériaux composites; Resin transfer molding; Preliminary design; Resin transfer molding; Finite element simulations; Optimization; Composite materials; Assembly; Design for manufacturing

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mouton, S. (2010). Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2010BOR14029

Chicago Manual of Style (16^th Edition):

Mouton, Serge. “Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti.” 2010. Doctoral Dissertation, Université de Bordeaux I. Accessed December 05, 2019. http://www.theses.fr/2010BOR14029.

MLA Handbook (7^th Edition):

Mouton, Serge. “Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti.” 2010. Web. 05 Dec 2019.

Vancouver:

Mouton S. Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2010. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2010BOR14029.

Council of Science Editors:

Mouton S. Intégration des contraintes d’industrialisation des pièces en matériaux composites pour l’aide à la décision en conception préliminaire appliquée au procédé RTM : Transmission and appropriation of language in a postcolonial context : the case of Haïti. [Doctoral Dissertation]. Université de Bordeaux I; 2010. Available from: http://www.theses.fr/2010BOR14029

14. Cordier Telmar, Aurélie. Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process.

Degree: Docteur es, Génie Mécanique, 2012, Université d'Orléans

URL: http://www.theses.fr/2012ORLE2045

►

Cette thèse traite la fabrication de pièces composites par le procédé « Resin Transert Molding » (RTM), appliquée à des tubes de protections thermiques assemblées… (more)

▼

Cette thèse traite la fabrication de pièces composites par le procédé « Resin Transert Molding » (RTM), appliquée à des tubes de protections thermiques assemblées dans des propulseurs de systèmes d’armes. Ces travaux ont pour objectif de démontrer la faisabilité d’utilisation de ce procédé pour la fabrication de ces pièces complexes. C’est le préformage, première étape du procédé de fabrication par RTM, qui est étudié dans le cadre de cette thèse. Cette étape est cruciale du point de vue de la faisabilité de l’étape d’injection qui la suit dans le procédé RTM mais aussi pour s’assurer de la qualité de la pièce composite finale obtenue. L’objectif des travaux de thèse est triple. Il faut tout d’abord développer le protocole de fabrication répétable adapté pour garantir l’obtention de préformes conformes. Ce protocole devra être viable du point de vue industriel. Pour cela, une démarche expérimentale a été mise en place. Un pilote de laboratoire puis un pilote industriel ont permis de comprendre et maitriser les phénomènes survenant en cours de préformage en faisant varier les paramètres procédé pour la fabrication de nombreux prototypes. Un modèle macroscopique prédictif de la forme globale des plis obtenus à partir des paramètres procédés a été développé à l’aide des observations expérimentales. Un modèle mésoscopique, à l’échelle de la maille élémentaire, a été écrit également. Il permet de prédire, à partir des données constitutives du matériau et d’une géométrie de pièce, la déformation de compaction et de cisaillement, modes de sollicitations prépondérants en cours de préformage, subie par le renfort en cours de la première étape du procédé de fabrication. Ces modèles mésoscopique et macroscopique couplés permettent le développement d’un outil global qui, de manière théorique et prédictive, assure la faisabilité d’une pièce de géométrie connue avec un matériau connu et fournit les paramètres « procédé » optimum pour assurer sa fabrication future. Les phénomènes de déformation en cisaillement et compaction apparaissant sur la tresse en cours de préformage sont donc identifiés et connus. Le procédé de fabrication est optimisé et l’outil prédictif permet d’envisager et tester en amont un changement de matériau, de géométrie de pièce à fabriquer ou de cahier descharges industriel.

This study deals with the manufacture of composite parts by the process "Resin Transert Molding" (RTM), applied to thermal protection tubes. This work aims to demonstrate the feasibility of using this method for the production of these complex parts. This study deals with the first step of the RTM process, the fiber performing. This is critical from the standpoint of the feasibility of injecting step that follows in the RTM process but also to ensure the quality of the final composite part obtained. The aim of the thesis is threefold. Must first develop the manufacturing protocol adapted to ensure repeatable obtaining preforms compliant. This protocol should be viable to the industrial point of view. For this purpose, an experimental…

Advisors/Committee Members: Soulat, Damien (thesis director), Hivet, Gilles (thesis director).

Subjects/Keywords: RTM; Préformage; Tresse; Procédé de fabrication; Cisaillement; Compaction; Modèle prédictif; Resin Transert Molding; Fiber forming; Braid; Process manufacturing; Shear; Compaction; Predictive model

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cordier Telmar, A. (2012). Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process. (Doctoral Dissertation). Université d'Orléans. Retrieved from http://www.theses.fr/2012ORLE2045

Chicago Manual of Style (16^th Edition):

Cordier Telmar, Aurélie. “Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process.” 2012. Doctoral Dissertation, Université d'Orléans. Accessed December 05, 2019. http://www.theses.fr/2012ORLE2045.

MLA Handbook (7^th Edition):

Cordier Telmar, Aurélie. “Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process.” 2012. Web. 05 Dec 2019.

Vancouver:

Cordier Telmar A. Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process. [Internet] [Doctoral dissertation]. Université d'Orléans; 2012. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2012ORLE2045.

Council of Science Editors:

Cordier Telmar A. Etude de déformabilité de tresses en cours de préformage pour la fabrication de composite par le procédé RTM : Braid deformability during preforming for composite manufacture by RTM process. [Doctoral Dissertation]. Université d'Orléans; 2012. Available from: http://www.theses.fr/2012ORLE2045

Missouri University of Science and Technology

15. Menta, V. G. K. Advanced composites using non-autoclave processes: manufacturing and characterization.

Degree: PhD, Mechanical Engineering, Missouri University of Science and Technology

URL: http://scholarsmine.mst.edu/doctoral_dissertations/2068

► "The objective of the present study is to develop non-autoclave processes to manufacture high performance composites for aerospace applications. In Paper 1, vacuum assisted resin… (more)

Subjects/Keywords: Vacuum assisted resin transfer molding (VARTM); Mechanical Engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Menta, V. G. K. (n.d.). Advanced composites using non-autoclave processes: manufacturing and characterization. (Doctoral Dissertation). Missouri University of Science and Technology. Retrieved from http://scholarsmine.mst.edu/doctoral_dissertations/2068

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Chicago Manual of Style (16^th Edition):

Menta, V G K. “Advanced composites using non-autoclave processes: manufacturing and characterization.” Doctoral Dissertation, Missouri University of Science and Technology. Accessed December 05, 2019. http://scholarsmine.mst.edu/doctoral_dissertations/2068.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

MLA Handbook (7^th Edition):

Menta, V G K. “Advanced composites using non-autoclave processes: manufacturing and characterization.” Web. 05 Dec 2019.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Menta VGK. Advanced composites using non-autoclave processes: manufacturing and characterization. [Internet] [Doctoral dissertation]. Missouri University of Science and Technology; [cited 2019 Dec 05]. Available from: http://scholarsmine.mst.edu/doctoral_dissertations/2068.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Council of Science Editors:

Menta VGK. Advanced composites using non-autoclave processes: manufacturing and characterization. [Doctoral Dissertation]. Missouri University of Science and Technology; Available from: http://scholarsmine.mst.edu/doctoral_dissertations/2068

Note: this citation may be lacking information needed for this citation format:
No year of publication.

16. Maruszewski, Rance Joel. COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING.

Degree: MS, Engineering Mechanics, 2011, Penn State University

URL: https://etda.libraries.psu.edu/catalog/11888

► This thesis is an overview of the resin transfer molding fabrication of a complex composite turbo-machinery component (blade). The motivation for this work was to… (more)

▼ This thesis is an overview of the resin transfer molding fabrication of a complex composite turbo-machinery component (blade). The motivation for this work was to provide an alternative cost saving technology for the manufacture of complex geometries. Legacy components were machined from metal blanks incurring high machining costs and long delivery times due to complex geometry, the degree of machining accuracy needed, and surface finish requirements of the part. A fabrication process technology was developed to produce an alternative low-cost high quality composite component with tailored properties. Beyond cost reduction, the main priorities of this process focused on quality and repeatability. Technology development took place in two phases: a prototype proving phase and a production phase. For the proving phase, a machined master blade was used to create a prototype urethane tooling mold. Hybrid fiber preforms were constructed from carbon and glass fabrics to fill the complex mold cavity. Preform layups were empirically generated and sewn together. Preforms were then loaded into the mold and the assembly was placed within a containment vessel. Vinyl ester resin was injected into the mold and allowed to cure. The mold was then disassembled and the blade extracted. The geometry of the as-fabricated prototype blade was inspected using a coordinate measuring machine. The prototype blade exhibited a geometric ‘inward bow’ distortion. Geometry data and lessons learned from the prototype phase influenced development of the production phase. On the foundation of a successful prototype part that proved development concepts, production tooling was designed and constructed from aluminum. A novel finite element geometry correction method was developed and demonstrated to correct for prototype blade distortion by modifying mold cavity geometry. These geometry corrections were implemented in the aluminum tooling. Also, small preforms were added, and other improvements made. A production blade was fabricated using the aluminum production tooling, inspected, and compared to the prototype and the design of record (DOR). The production tooling yielded an improved blade with corrected geometry, optimized fiber fill, and accurate repeatability. The overall manufacturing development was a success resulting in a robust low-cost resin transfer molding process for the repeatable production of high quality complex composite turbo-machinery components with sufficient geometric accuracy. Two main accomplishments are a fully developed production technology and a process engineering blueprint for developing complex composite resin transfer molding technologies. A third major achievement of this work was the successful application of the aforementioned finite element geometry correction method that accounted for material distortions to yield a part that met required tolerances. Included is a review of the resin transfer molding process covering studies on the effects of process variables, potential defects and countermeasures, modeling and…

Subjects/Keywords: Cost Saving Manufacturing Technology; Metrology; Geometric Inspection; Geometry Correction by Finite Element Modeling FEM; Fiber Reinforced Polymer FRP; Resin Transfer Molding RTM; Composite Fabrication; Prototype; Production; Urethane Tooling; Aluminum Tooling; Woven Carbon Fabric; Vinyl Ester Resin

…and approach that guided project efforts. Resin Transfer Molding (RTM) is a… …enhanced RTM process designated AdvRTM (Advanced Resin Transfer Molding) and developed… …successful, resulting in a robust low‐cost resin transfer molding process for the repeatable… …providing foundational definitions for fiber reinforced composites and the Resin Transfer Molding… …Polymer Composites and Resin Transfer Molding Fiber Reinforced Polymer (FRP)…

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Maruszewski, R. J. (2011). COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/11888

Chicago Manual of Style (16^th Edition):

Maruszewski, Rance Joel. “COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING.” 2011. Masters Thesis, Penn State University. Accessed December 05, 2019. https://etda.libraries.psu.edu/catalog/11888.

MLA Handbook (7^th Edition):

Maruszewski, Rance Joel. “COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING.” 2011. Web. 05 Dec 2019.

Vancouver:

Maruszewski RJ. COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING. [Internet] [Masters thesis]. Penn State University; 2011. [cited 2019 Dec 05]. Available from: https://etda.libraries.psu.edu/catalog/11888.

Council of Science Editors:

Maruszewski RJ. COMPLEX COMPOSITE TURBO-MACHINERY COMPONENT FABRICATED BY RESIN TRANSFER MOLDING. [Masters Thesis]. Penn State University; 2011. Available from: https://etda.libraries.psu.edu/catalog/11888

The Ohio State University

17. Xu, Liqun. Integrated analysis of liquid composite molding (LCM) processes.

Degree: PhD, Chemical Engineering, 2004, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1095688597

► Liquid composite molding (LCM) processes have been proven to be cost effective for producing lightweight and high-performance composites. In this study, an integrated analysis was… (more)

▼ Liquid composite molding (LCM) processes have been proven to be cost effective for producing lightweight and high-performance composites. In this study, an integrated analysis was carried out to study two processes in this category, including the resin injection pultrusion (RIP) process and the vacuum assisted resin transfer molding (VARTM) process. RIP has attracted much attention in the last decade, due to its great potential for producing composite-profile with constant cross-sectional area, high productivity, low cost, and zero volatile organic compounds (VOC) emissions. In this study, a friction coefficient model and a volume change model of a vinyl ester resin were developed. An analytical model was developed to predict the resistance force in the injection die. The volume change model and the friction coefficient model, combined with the temperature and resin conversion profiles along the die, were used to predict the resistance force in the heating die. The comparison between the analytical and numerical results with the experimental data showed that the models and the simulation tool developed in this study are capable of predicting the pulling force in the entire die with good agreement. Recently, because of the growing interest of low temperature manufacturing processes such as VARTM, low shrinkage molding compounds with the ability to be processed at low temperature have attracted considerable interest from the composite industry. However, most low profile additives (LPAs) do not work well for the shrinkage control of unsaturated polyester (UP) in low-temperature processes because of the lack of strong temperature changes during molding. In this work, a novel nanotechnology was developed to achieve zero volume shrinkage of low profile UP resin system cured at room temperature by controlling the selectivity of nanoclay during reaction-induced phase separation. TEM observation of the cured sample showed that nearly all of the nanoclay platelets resided in the LPA-rich phase. Nanoclay presence increased the reaction rate in the LPA-rich phase because nanoclay could act as a co-promoter in the UP curing system, which could result in the earlier microvoid formation and better shrinkage control. The resulting VARTM panels with improved volume shrinkage control showed better surface quality improvement. Advisors/Committee Members: Lee, Ly (Advisor).

Subjects/Keywords: Engineering, Chemical; liquid composite molding; resin injection pultrusion; vacuum assisted resin transfer molding; vinyl ester resin; unsaturated polyester resin; low profile additive.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Xu, L. (2004). Integrated analysis of liquid composite molding (LCM) processes. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1095688597

Chicago Manual of Style (16^th Edition):

Xu, Liqun. “Integrated analysis of liquid composite molding (LCM) processes.” 2004. Doctoral Dissertation, The Ohio State University. Accessed December 05, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1095688597.

MLA Handbook (7^th Edition):

Xu, Liqun. “Integrated analysis of liquid composite molding (LCM) processes.” 2004. Web. 05 Dec 2019.

Vancouver:

Xu L. Integrated analysis of liquid composite molding (LCM) processes. [Internet] [Doctoral dissertation]. The Ohio State University; 2004. [cited 2019 Dec 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1095688597.

Council of Science Editors:

Xu L. Integrated analysis of liquid composite molding (LCM) processes. [Doctoral Dissertation]. The Ohio State University; 2004. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1095688597

Vilnius Gediminas Technical University

18. Gailiūnas, Paulius. Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas.

Degree: Master, Physics, 2013, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_184708-47299 ;

►

Baigiamajame magistro darbe suprojektuotos ir pagamintos dviejų rūšių šviesos koncentratorinės sistemos: jungtinė parabolinė ir sistema su Frenelio lęšiu. Atlikta saulės elementų efektyvumo analizė, išnagrinėtos šviesą… (more)

▼

Baigiamajame magistro darbe suprojektuotos ir pagamintos dviejų rūšių šviesos koncentratorinės sistemos: jungtinė parabolinė ir sistema su Frenelio lęšiu. Atlikta saulės elementų efektyvumo analizė, išnagrinėtos šviesą koncentruojančių sistemų rūšys bei aptarti jų optiniai parametrai. Frenelio lęšis ir koncentratorinių sistemų laikančiosios konstrukcijos pagamintos vakuuminio formavimo būdu, ieškant pigesnės gamybos technologijos. Baigiamajame darbe atlikti optinio pralaidumo ir lūžio rodiklio, matomos šviesos bangų ilgių ruože, tyrimai bei saulės elementų, esančių šviesos koncentratorinėse sistemose,voltamperinių ir voltvatinių charakteristikų tyrimai. Iš tyrimų rezultatų nustatyti šviesos koncentravimo laipsniai. Darbe diskutuojama apie pigių optinių sistemų galimus pritaikymus ir jų tobulinimo būdus. Išnagrinėjus teorinę ir praktinę dalis, pateiktos išvados ir pasiūlymai. Darbą sudaro 8 dalys: įvadas, saulės elementų efektyvumo ribos, saulės šviesos koncentratoriai ir jų panaudojimas fotoelektrinėse sistemose, eksperimentinių tyrimų metodika, prototipų gamyba, eksperimentiniai tyrimai, išvados, literatūros sąrašas. Darbo apimtis – 82 p. teksto be priedų, 95 pav., 13 lent., 22 bibliografiniai šaltiniai. Atskirai pridedami darbo priedai.

Concentrated PV systems (compound parabolic and Fresnel CPV) have been designed and investigated. The efficiency of solar cells and the types of light concentrated systems have been analyzed and their optical parameters have been discussed. Fresnel lens and the CPV system holding structure have been fabricated by means of vacuum forming machine in this way making the technology of production less expensive. Optical transmittance and refractive index of Fresnel lens were measured in the range of visible light wavelengths. Current-voltage and voltage-power characteristics of solar cells built inside the CPV systems were investigated, based on results the degree of light concentration by Fresnel lens and compound parabolic CPV has been determined. Some discussions regarding possible applications of concentrated PV systems containing the Fresnel lens as well as possible ways of CPV design improvements are given in current work. After analysed theoretical and practical parts, conclusions and suggestions are proposed. Thesis structure: introduction, theoretical and experimental parts, results of experiments, conclusions and references. Thesis consist of: 82 p. text without appendixes, 95 pictures, 13 tables, 22 bibliographical entries. Appendixes included.

Advisors/Committee Members: Jukna, Artūras (Master’s thesis supervisor), Miškinis, Paulius (Master’s thesis reviewer), Vengalis, Bonifacas (Master’s thesis reviewer), Petrikis, Simas Ramutis (Master’s degree committee chair), Jukna, Artūras (Master’s degree committee member), Astrauskienė, Nijolė (Master’s degree committee member), Damauskaitė, Jovita (Master’s degree committee member), Miškinis, Paulius (Master’s degree committee member), Šilėnas, Aldis (Master’s degree committee member), Jakimavičius, Gintautas (Master’s thesis advisor).

Subjects/Keywords: Frenelio lęšis; Jungtinis parabolinis konentratorius; Lūžio rodiklis; Optinis pralaidumas; Vakuuminis plastiko formavimas; Fresnel lens; Compound parabolic concentrator; Refractive index; Optical transmittance; Resin transfer molding

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gailiūnas, Paulius. (2013). Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas. (Masters Thesis). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_184708-47299 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Gailiūnas, Paulius. “Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas.” 2013. Masters Thesis, Vilnius Gediminas Technical University. Accessed December 05, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_184708-47299 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Gailiūnas, Paulius. “Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas.” 2013. Web. 05 Dec 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Gailiūnas, Paulius. Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas. [Internet] [Masters thesis]. Vilnius Gediminas Technical University; 2013. [cited 2019 Dec 05]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_184708-47299 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Gailiūnas, Paulius. Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas. [Masters Thesis]. Vilnius Gediminas Technical University; 2013. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_184708-47299 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Baylor University

19. Mailen, Russell. Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics.

Degree: Mechanical Engineering., 2013, Baylor University

URL: http://hdl.handle.net/2104/8582

► The manufacture of laminated composite materials using a thermosetting resin matrix is a complex process that can be understood with a knowledge of cure kinetics,… (more)

Subjects/Keywords: Cure induced strain.; Carbon fiber reinforced plastics (CFRP).; Vacuum assisted resin transfer molding (VARTM).; Axisymmetric finite element analysis (FEA).; Thermosetting polymer cure kinetics.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mailen, R. (2013). Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics. (Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/8582

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mailen, Russell. “Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics. ” 2013. Thesis, Baylor University. Accessed December 05, 2019. http://hdl.handle.net/2104/8582.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mailen, Russell. “Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics. ” 2013. Web. 05 Dec 2019.

Vancouver:

Mailen R. Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics. [Internet] [Thesis]. Baylor University; 2013. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/2104/8582.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mailen R. Investigation of induced thermo-mechanical response and cure kinetics during processing of carbon fiber reinforced plastics. [Thesis]. Baylor University; 2013. Available from: http://hdl.handle.net/2104/8582

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

20. McGrane, Rebecca Ann. Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification.

Degree: MS, Engineering Science and Mechanics, 2001, Virginia Tech

URL: http://hdl.handle.net/10919/42108

► Vacuum assisted resin transfer molding (VARTM) is a low cost resin infusion process being developed for the manufacture of composite structures. VARTM is being evaluated… (more)

▼ Vacuum assisted resin transfer molding (VARTM) is a low cost resin infusion process being developed for the manufacture of composite structures. VARTM is being evaluated for the manufacture of primary aircraft structures, including foam sandwich composite materials. One of the benefits of VARTM is the ability to resin infiltrate large or complex shaped components. However, trial and error process development of these types of composite structures can prove costly and ineffective. Therefore, process modeling of the associated flow details and infiltration times can aide in manufacturing design and optimization. The purpose of this research was to develop a process using VARTM to resin infiltrate stitched and unstitched dry carbon fiber preforms with polymethacrylimide foam cores to produce composite sandwich structures. The infiltration process was then used to experimentally verify a three-dimensional finite element model for VARTM injection of stitched sandwich structures. Using the processes developed for the resin infiltration of stitched foam core preforms, visualization experiments were performed to verify the finite element model. The flow front progression as a function of time and the total infiltration time were recorded and compared with model predictions. Four preform configurations were examined in which foam thickness and stitch row spacing were varied. For the preform with 12.7 mm thick foam core and 12.7 mm stitch row spacing, model prediction and experimental data agreed within 5%. The 12.7 mm thick foam core preform with 6.35 mm row spacing experimental and model predicted data agreed within 8%. However, for the 12.7 mm thick foam core preform with 25.4 mm row spacing, the model overpredicted infiltration times by more 20%. The final case was the 25.4 mm thick foam core preform with 12.7 mm row spacing. In this case, the model overpredicted infiltration times by more than 50%. This indicates that the model did not accurately describe flow through the needle perforations in the foam core and could be addressed by changing the mesh elements connecting the two face sheets. Advisors/Committee Members: Loos, Alfred C. (committeechair), Batra, Romesh C. (committee member), Gürdal, Zafer (committee member).

Subjects/Keywords: vacuum assisted resin transfer molding; polymer composite processing; sandwich structures; VARTM

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

McGrane, R. A. (2001). Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/42108

Chicago Manual of Style (16^th Edition):

McGrane, Rebecca Ann. “Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification.” 2001. Masters Thesis, Virginia Tech. Accessed December 05, 2019. http://hdl.handle.net/10919/42108.

MLA Handbook (7^th Edition):

McGrane, Rebecca Ann. “Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification.” 2001. Web. 05 Dec 2019.

Vancouver:

McGrane RA. Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification. [Internet] [Masters thesis]. Virginia Tech; 2001. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/10919/42108.

Council of Science Editors:

McGrane RA. Vacuum Assisted Resin Transfer Molding of Foam Sandwich Composite Materials: Process Development and Model Verification. [Masters Thesis]. Virginia Tech; 2001. Available from: http://hdl.handle.net/10919/42108

Virginia Tech

21. Sayre, Jay Randall. Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis.

Degree: PhD, Materials Science and Engineering, 2000, Virginia Tech

URL: http://hdl.handle.net/10919/27034

► Vacuum-Assisted Resin Transfer Molding (VARTM) processes are becoming promising technologies in the manufacturing of primary composite structures in the aircraft industry as well as infrastructure.… (more)

▼ Vacuum-Assisted Resin Transfer Molding (VARTM) processes are becoming promising technologies in the manufacturing of primary composite structures in the aircraft industry as well as infrastructure. A great deal of work still needs to be done on efforts to reduce the costly trial-and-error methods of VARTM processing that are currently in practice today. A computer simulation model of the VARTM process would provide a cost-effective tool in the manufacturing of composites utilizing this technique. Therefore, the objective of this research was to modify an existing three-dimensional, Resin Film Infusion (RFI)/Resin Transfer Molding (RTM) model to include VARTM simulation capabilities and to verify this model with the fabrication of aircraft structural composites. An additional objective was to use the VARTM model as a process analysis tool, where this tool would enable the user to configure the best process for manufacturing quality composites. Experimental verification of the model was performed by processing several flat composite panels. The parameters verified included flow front patterns and infiltration times. The flow front patterns were determined to be qualitatively accurate, while the simulated infiltration times over predicted experimental times by 8 to 10%. Capillary and gravitational forces were incorporated into the existing RFI/RTM model in order to simulate VARTM processing physics more accurately. The theoretical capillary pressure showed the capability to reduce the simulated infiltration times by as great as 6%. The gravity, on the other hand, was found to be negligible for all cases. Finally, the VARTM model was used as a process analysis tool. This enabled the user to determine such important process constraints as the location and type of injection ports and the permeability and location of the high-permeable media. A process for a three-stiffener composite panel was proposed. This configuration evolved from the variation of the process constraints in the modeling of several different composite panels. The configuration was proposed by considering such factors as: infiltration time, the number of vacuum ports, and possible areas of void entrapment. Advisors/Committee Members: Loos, Alfred C. (committeechair), Gürdal, Zafer (committee member), Batra, Romesh C. (committee member), Baird, Donald G. (committee member), Lesko, John Jack (committee member).

Subjects/Keywords: Vacuum-Assisted Resin Transfer Molding; polymer composite processing; VARTM; polymer composite process modeling

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sayre, J. R. (2000). Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/27034

Chicago Manual of Style (16^th Edition):

Sayre, Jay Randall. “Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis.” 2000. Doctoral Dissertation, Virginia Tech. Accessed December 05, 2019. http://hdl.handle.net/10919/27034.

MLA Handbook (7^th Edition):

Sayre, Jay Randall. “Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis.” 2000. Web. 05 Dec 2019.

Vancouver:

Sayre JR. Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis. [Internet] [Doctoral dissertation]. Virginia Tech; 2000. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/10919/27034.

Council of Science Editors:

Sayre JR. Vacuum-Assisted Resin Transfer Molding (VARTM) Model Development, Verification, and Process Analysis. [Doctoral Dissertation]. Virginia Tech; 2000. Available from: http://hdl.handle.net/10919/27034

Brno University of Technology

22. Dvořák, Vlastimil. Návrh křidélka z kompozitních materiálů .

Degree: 2008, Brno University of Technology

URL: http://hdl.handle.net/11012/11774

► Tato diplomová práce na téma „Návrh křidélka z kompozitních materiálů“ pojednává o technologiích výroby používaných v leteckém průmyslu. Ukazuje vhodné koncepce kompozitních konstrukcí pro křidélko… (more)

Subjects/Keywords: Kompozitní materiály; Aero L-159; křidélko; RTM; Kompozitní technologie; Composite materials; Aero L-159; Aileron; RTM; Resin Transfer Moulding; Composite processes engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dvořák, V. (2008). Návrh křidélka z kompozitních materiálů . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/11774

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dvořák, Vlastimil. “Návrh křidélka z kompozitních materiálů .” 2008. Thesis, Brno University of Technology. Accessed December 05, 2019. http://hdl.handle.net/11012/11774.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dvořák, Vlastimil. “Návrh křidélka z kompozitních materiálů .” 2008. Web. 05 Dec 2019.

Vancouver:

Dvořák V. Návrh křidélka z kompozitních materiálů . [Internet] [Thesis]. Brno University of Technology; 2008. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/11012/11774.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dvořák V. Návrh křidélka z kompozitních materiálů . [Thesis]. Brno University of Technology; 2008. Available from: http://hdl.handle.net/11012/11774

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

23. Caba, Aaron C. Jr. Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model.

Degree: MS, Engineering Science and Mechanics, 1998, Virginia Tech

URL: http://hdl.handle.net/10919/36572

► This investigation completed the verification of a three-dimensional resin transfer molding/resin film infusion (RTM/RFI) process simulation model. The model incorporates resin flow through an… (more)

▼ This investigation completed the verification of a three-dimensional resin transfer molding/resin film infusion (RTM/RFI) process simulation model. The model incorporates resin flow through an anisotropic carbon fiber preform, cure kinetics of the resin, and heat transfer within the preform/tool assembly. The computer model can predict the flow front location, resin pressure distribution, and thermal profiles in the modeled part. The formulation for the flow model is given using the finite element/control volume (FE/CV) technique based on Darcy's Law of creeping flow through a porous media. The FE/CV technique is a numerically efficient method for finding the flow front location and the fluid pressure. The heat transfer model is based on the three-dimensional, transient heat conduction equation, including heat generation. Boundary conditions include specified temperature and convection. The code was designed with a modular approach so the flow and/or the thermal module may be turned on or off as desired. Both models are solved sequentially in a quasi-steady state fashion. A mesh refinement study was completed on a one-element thick model to determine the recommended size of elements that would result in a converged model for a typical RFI analysis. Guidelines are established for checking the convergence of a model, and the recommended element sizes are listed. Several experiments were conducted and computer simulations of the experiments were run to verify the simulation model. Isothermal, non-reacting flow in a T-stiffened section was simulated to verify the flow module. Predicted infiltration times were within 12-20 percent of measured times. The predicted pressures were approximately 50 percent of the measured pressures. A study was performed to attempt to explain the difference in pressures. Non-isothermal experiments with a reactive resin were modeled to verify the thermal module and the resin model. Two panels were manufactured using the RFI process. One was a stepped panel and the other was a panel with two `T' stiffeners. The difference between the predicted infiltration times and the experimental times was 4 to 23 percent. Advisors/Committee Members: Loos, Alfred C. (committeechair), Johnson, Eric R. (committee member), Batra, Romesh C. (committee member).

Subjects/Keywords: resin film infusion; resin transfer molding; composite manufacturing; simulation; modeling; textile preform; flow in porous media; heat transfer

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Caba, A. C. J. (1998). Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/36572

Chicago Manual of Style (16^th Edition):

Caba, Aaron C Jr. “Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model.” 1998. Masters Thesis, Virginia Tech. Accessed December 05, 2019. http://hdl.handle.net/10919/36572.

MLA Handbook (7^th Edition):

Caba, Aaron C Jr. “Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model.” 1998. Web. 05 Dec 2019.

Vancouver:

Caba ACJ. Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model. [Internet] [Masters thesis]. Virginia Tech; 1998. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/10919/36572.

Council of Science Editors:

Caba ACJ. Verification of a Three-Dimensional Resin Film Infusion Proecss Simulation Model. [Masters Thesis]. Virginia Tech; 1998. Available from: http://hdl.handle.net/10919/36572

Brno University of Technology

24. Nenov, Stanislav Stojanov. Výroba dílu ze sklolaminátu .

Degree: 2013, Brno University of Technology

URL: http://hdl.handle.net/11012/27895

► Bakalářská práce je zaměřena na výrobu dílu ze sklolaminátu ve firmě Composite Components, a. s. V úvodní části představuje společnost a seznamuje stručně s její… (more)

Subjects/Keywords: kompozit; sklolaminát; ruční laminace; technologie RTM; sklovýztuž; pryskyřice; gelcoat; composite; fiberglass; hand lay-up technology; RTM technology; fiberglass reinforcement; resin; gelcoat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nenov, S. S. (2013). Výroba dílu ze sklolaminátu . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/27895

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nenov, Stanislav Stojanov. “Výroba dílu ze sklolaminátu .” 2013. Thesis, Brno University of Technology. Accessed December 05, 2019. http://hdl.handle.net/11012/27895.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nenov, Stanislav Stojanov. “Výroba dílu ze sklolaminátu .” 2013. Web. 05 Dec 2019.

Vancouver:

Nenov SS. Výroba dílu ze sklolaminátu . [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/11012/27895.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nenov SS. Výroba dílu ze sklolaminátu . [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/27895

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

25. Ibrahim, Quazi I. Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures.

Degree: MS, Department of Public Health Sciences, 2015, University of Alberta

URL: https://era.library.ualberta.ca/files/q237hv78s

► In repeated measures data, large or small values at the initial measurement tend to be followed by values that are closer to the mean at… (more)

▼ In repeated measures data, large or small values at the initial measurement tend to be followed by values that are closer to the mean at the follow-ups measurements. This tendency is called regression to the mean (RTM). The presence of the RTM effect is inevitable in repeated measures data because of less than perfect correlation (correlation coefficient < 1) between the repeated measurements. Despite the growing evidence of the presence of RTM effects in clinical and public health studies based on repeated measures data, very few studies have evaluated and considered them when interpreting observed changes over time. In intervention studies, an RTM effect is mixed with an intervention effect in observed changes. It is extremely important to separate the RTM effect from the observed change in order to isolate any intervention effect and thus to make valid inferences about the effect of the intervention. In studying changes in outcome variables in repeated measures studies, RTM effects should always be adjusted for the valid interpretation of the changes and unbiased assessment of the intervention effects. The choice of methods to control for the RTM effect should be based on the type (continuous, count) and shape (normal, non-normal distribution) of the outcome variables of interest. A new method of estimating RTM effects for non-normal data using simulation is proposed. The method is a combination of bootstrap sampling from the standardized outcome variable and matrix decomposition of the correlation matrix between the repeated measurements. The method is applied to adjust for the RTM effects in studying changes in mean drinks in a typical week in a study evaluating the impact of a brief alcohol intervention on youth. In the study, mean drinks followed a positively skewed distribution. The proposed method estimated the RTM effects considering the true distribution (positively skewed) of the outcome and in doing so, provided more accurate estimation of the intervention effects compared to other methods considered in the thesis. The method ensured valid interpretation of the observed changes in the outcome by providing the most accurate estimation of the RTM effect and then removing it from the data. The proposed method could be applied to adjust for the RTM effect in non-normal repeated measures studies.

Subjects/Keywords: RTM

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ibrahim, Q. I. (2015). Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/q237hv78s

Chicago Manual of Style (16^th Edition):

Ibrahim, Quazi I. “Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures.” 2015. Masters Thesis, University of Alberta. Accessed December 05, 2019. https://era.library.ualberta.ca/files/q237hv78s.

MLA Handbook (7^th Edition):

Ibrahim, Quazi I. “Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures.” 2015. Web. 05 Dec 2019.

Vancouver:

Ibrahim QI. Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures. [Internet] [Masters thesis]. University of Alberta; 2015. [cited 2019 Dec 05]. Available from: https://era.library.ualberta.ca/files/q237hv78s.

Council of Science Editors:

Ibrahim QI. Adjustment for the Regression to the Mean Effects in Studies with Repeated Measures. [Masters Thesis]. University of Alberta; 2015. Available from: https://era.library.ualberta.ca/files/q237hv78s

Halmstad University

26. Eriksson, Carl-Johan. FRP i brokonstruktion : -varför används FRP inte i Sverige.

Degree: Engineering and Science, 2015, Halmstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30284

►

FRP stands for Fiber Reinforced Polymer. FRP materials have yet to be introduced inbridge construction in Sweden. Composite materials can through combined componentsand manufacturing… (more)

▼

FRP stands for Fiber Reinforced Polymer. FRP materials have yet to be introduced inbridge construction in Sweden. Composite materials can through combined componentsand manufacturing processes be tailored to fit advanced bridge designs. FRP materials arestrong, durable and of low weight. FRP materials give the superstructure reduced weightand are therefore a suitable alternative for industrial prefabrication. This report shows thatFRP materials are possible to use in bridge construction. With the introduction of a specificEurocode we are confident that FRP materials will become a competitive alternative inbridge construction in Sweden in the future.

Broar är förenade med stora kostnader, dels för att bygga och dels för att underhålla ochreparera. FRP står för Fiber Reinforced Polymer är ett erkänt material för många andraanvändningsområden, exempelvis flyg och bilindustri. I Europa finns en mängd FRP-broar,men materialet har ännu inte introducerats i någon bro i Sverige.FRP är ett kompositmaterial som genom olika kombinationer av komponenter ochtillverkningsprocesser kan skräddarsys för den aktuella uppgiften i en konstruktion. FRPmaterialär starka, beständiga och har en låg vikt. Fördelar med FRP inom brokonstruktionär att det ger överbyggnaden en minskad egenvikt och därmed är ett lämpligt alternativ attprefabricera industriellt, då bland annat transport- och lyftbarhet gynnas samt att en högbeständighet ger minskat underhåll.Då ingen litteratur hanterar FRP i Brokonstruktion har de intervjuades åsikter varit mycketviktiga för arbetet. Litteraturstudien har legat till grund för en ökad förståelse för egenskaperutmärkande för olika typer av FRP. Intervjuer har utförts med personer som i dagslägetkommit i kontakt med materialet inom brokonstruktion. Detta har gjorts för att nå ett relevantresultat med möjlighet att kunna identifiera materialets för- respektive nackdelar samtanledningen till det låga användandet i Sverige.Rapporten visar att materialet har positiva egenskaper och är möjligt att använda vidkonstruktion av broar. Det saknas i dagsläget en specifik Eurokod som på ett enhetligt sättredovisar hur materialet ska hanteras. Med införandet av en specifik Eurokod och om en nykompetens arbetas fram inom branschen är vi övertygade om att FRP-material kommer attbli ett konkurrenskraftigt alternativ vid brokonstruktion.

Subjects/Keywords: CFRP; GFRP; fiber reinforced polymer; structural composites; hybrid materials; bridge construction; prefabrication; Eurocode; lightweight materials; industrial prefabrication; pultrusion; RTM; resin transfer moulding; hybridmaterial; alternativvalskalkyl; fiberförstärkta polymerer; glasfiber; kolfiber; brokonstruktion; prefab; prefabricering; byggteknik; byggkonstruktion; brobyggnation; lättviktsmaterial; komposit; fiberkomposit; industriellt byggande; industriell prefabrikation; byggmetoder; FRP; pultrudering; pultrusion; dimensioneringsregler; eurokod

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Eriksson, C. (2015). FRP i brokonstruktion : -varför används FRP inte i Sverige. (Thesis). Halmstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30284

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Eriksson, Carl-Johan. “FRP i brokonstruktion : -varför används FRP inte i Sverige.” 2015. Thesis, Halmstad University. Accessed December 05, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30284.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Eriksson, Carl-Johan. “FRP i brokonstruktion : -varför används FRP inte i Sverige.” 2015. Web. 05 Dec 2019.

Vancouver:

Eriksson C. FRP i brokonstruktion : -varför används FRP inte i Sverige. [Internet] [Thesis]. Halmstad University; 2015. [cited 2019 Dec 05]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30284.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Eriksson C. FRP i brokonstruktion : -varför används FRP inte i Sverige. [Thesis]. Halmstad University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30284

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

27. Sakka, Aymen. Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding .

Degree: 2012, University of Ottawa

URL: http://hdl.handle.net/10393/23508

► The increasing demand for polymer matrix composites (PMCs) from the airframe industry raises the issues of productivity, cost and reproducibility of manufactured PMC components. Performance… (more)

Subjects/Keywords: Composites; Resin transfer moulding (RTM); Preforming; Carbon fibre; Polymer matrix composites (PMC); Thermography

…application. Manufacturing processes include hand-lay-up, resin transfer moulding (RTM)… …x5B;16] 10 Resin transfer moulding (RTM) is a liquid moulding process… …Resin transfer moulding is a promising manufacturing method that offers major advantages over… …vacuum-assisted resin transfer moulding (VARTM), resin film infusion (RFI)… …below the glass transition temperature of the resin. In other cases of heat transfer through…

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sakka, A. (2012). Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/23508

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sakka, Aymen. “Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding .” 2012. Thesis, University of Ottawa. Accessed December 05, 2019. http://hdl.handle.net/10393/23508.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sakka, Aymen. “Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding .” 2012. Web. 05 Dec 2019.

Vancouver:

Sakka A. Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding . [Internet] [Thesis]. University of Ottawa; 2012. [cited 2019 Dec 05]. Available from: http://hdl.handle.net/10393/23508.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sakka A. Investigation of Heat Conduction Through PMC Components Made Using Resin Transfer Moulding . [Thesis]. University of Ottawa; 2012. Available from: http://hdl.handle.net/10393/23508

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Orliac, Jean-Guillaume. Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements.

Degree: Docteur es, Mécanique, Simulation numérique, Matériaux composites, 2012, INSA Lyon

URL: http://www.theses.fr/2012ISAL0121

►

Afin de pouvoir prédire le comportement des renforts de composites 3D interlock au cours d'un procédé de mise en forme, il est nécessaire de connaitre… (more)

▼

Afin de pouvoir prédire le comportement des renforts de composites 3D interlock au cours d'un procédé de mise en forme, il est nécessaire de connaitre la position des mèches dans le renfort durant la phase de préformage du procédé. Les travaux présentés ici traitent de la simulation du préformage de renforts 3D épais à l'aide d'un élément fini hexaédrique semi-discret spécifique. En utilisant le principe des travaux virtuels, on distingue le travail interne virtuel dû à la tension des mèches des autres travaux virtuels. La raideur due aux tensions de mèches, qui constitue la contribution principale de la rigidité du matériau, est prise en compte à l'aide de barres incluses dans les éléments. Les rigidités dues aux autres sollicitations, comme la compression transverse, les cisaillements ou les frottements inter-mèches, sont décrites par un matériau continu additionnel. La combinaison de ce modèle discret du premier ordre et d'un matériau continu hyperélastique anisotrope dit du second ordre, pour formuler le comportement du matériau va permettre la simulation du préformage des renforts tissés épais. Conjointement aux travaux sur la simulation, des travaux expérimentaux pour l'identification des paramètres matériau de la loi de comportement ont été définis et réalisés. Ces paramètres concernent les deux parties de la formulation du comportement.

In order to simulate 3D interlock composite reinforcement behavior during forming process, it is necessary to predict yarns positions in the fabric during the preforming stage of the process. The present work deals with thick 3D interlock fabric forming simulation using specific hexahedral semi-discrete finite elements. Using the virtual work principle, we distinguish the virtual internal work due to tensions in yarns from other internal virtual works. The stiffness relative to yarns tension which is the main part of the rigidity is described by bars within the elements. The other rigidities - like transverse compression, shears or friction between yarns - are depicted by a continuous additional material. A combination of this "first order" discrete model and a continuous orthotropic hyperelastic "second order" material formulation will enable us to simulate the interlock preforming process. Jointly to the simulation work, we also had to specify and perform experimental testing identification of material parameters. These parameters concern both parts of the model.

Advisors/Committee Members: Boisse, Philippe (thesis director), Morestin, Fabrice (thesis director).

Subjects/Keywords: Composite à matrice polymère; Moulage par transfert de résine; Renfort tissé; Mise en forme; Procédé de fabrication; Simulation; Propriété mécanique; Comportement hyperélastique; Echelle mésoscopique; Echelle macroscopique; Grande déformation; Méthode des éléments finis; Polymer matrix composite; RTM - Resin transfer molding; Woven reinforcement; Shaping; Manufacturing process; Mechanical properties; Hyperelastic behaviour; Mesoscopic approach; Macroscopic approach; Large deformation; Finite element method; 620.192 118 072

…� leur réalisation notamment dans le cadre du procédé RTM (Resin Transfert Molding… …23 Resin Transfer Molding… …Resin Transfer Moulding) sont les plus utilisés. Ce sont des procédés « moule fermé… …injection de résine ("Resin Transfer Moulding" en anglais) permet d'… …renforts tissés et � matrice polymère. Parmi ces procédés, l’infusion sous vide et le RTM (…

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Orliac, J. (2012). Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2012ISAL0121

Chicago Manual of Style (16^th Edition):

Orliac, Jean-Guillaume. “Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements.” 2012. Doctoral Dissertation, INSA Lyon. Accessed December 05, 2019. http://www.theses.fr/2012ISAL0121.

MLA Handbook (7^th Edition):

Orliac, Jean-Guillaume. “Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements.” 2012. Web. 05 Dec 2019.

Vancouver:

Orliac J. Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements. [Internet] [Doctoral dissertation]. INSA Lyon; 2012. [cited 2019 Dec 05]. Available from: http://www.theses.fr/2012ISAL0121.

Council of Science Editors:

Orliac J. Analyse et simulation du comportement anisotrope lors de la mise en forme de renforts tissés interlock : Analysis and simulation of anisotropic behavior for the preforming of 3D interlocks composite reinforcements. [Doctoral Dissertation]. INSA Lyon; 2012. Available from: http://www.theses.fr/2012ISAL0121

29. Brandley, Mark Wesley. Void Modeling in Resin Infusion.

Degree: MS, 2015, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=6459&context=etd

► Resin infusion of composite parts has continually been reaching to achieve laminate quality equal to, or exceeding, the quality produced with prepreg in an… (more)

▼ Resin infusion of composite parts has continually been reaching to achieve laminate quality equal to, or exceeding, the quality produced with prepreg in an autoclave. In order for this to occur, developers must understand the key process variables that go in to producing a laminate with minimal void content. The purpose of this research is to continue efforts in understanding 1) the effect of process conditions on the resultant void content, with a focus on resin infusion flow rate, 2) applying statistical metrics to the formation, location and size of voids formed, and 3) correlate these metrics with the local mechanical properties of the composite laminate. The variation in dispersion and formation of micro-voids and macro-voids varied greatly between the rates of flow the infusion occurred, especially in the non-crimp carbon fiber samples. Higher flow rates led to lower volumes of micro-voids in the beginning section of the carbon fiber laminates with macro-voids being introduced approximately half-way through infusion. This was determined to have occurred decreasing pressure gradient as the flow front moved away from the inlet. This variation in void content per location on the laminate was more evident in the carbon fiber samples than the fiberglass samples. Micro-voids follow void formation modeling especially when coupled with a pressure threshold model. Macro-void formation was also demonstrated to correlate strongly to void formation models when united with void mobility theories and pressure thresholds. There is a quick decrease in mechanical properties after the first 1-2% of voids signaling strength is mostly sensitive to the first 0-2% void content. A slight decrease in SBS was noticed in fiberglass laminates, A-F as v0 increased but not as drastically as represented in the NCF laminates, G and H. The lower clarity in the exponential trend could be due to the lack of samples with v0 greater than 0% but less than 1%. Strength is not well correlated to void content above 2% and could possibly be related to void morphololgy.

Subjects/Keywords: Mark Brandley; resin transfer molding; void formation; process optimization; out-of-autoclave; carbon fiber; vacuum infusion; resin infusion; Industrial Engineering

…resin infusion processes, particularly resin transfer molding (RTM). Resin infusion… …infusion Resin Transfer Molding – (RTM) is a composite molding pressure where over… …conditions on the concentration, location and distribution of voids in a resin transfer molding… …released. 20 3.2 3.2.1 Resin Transfer Molding and Laminate Preparation Tooling A mold… …reinforcement that is then infused with resin. In RTM, dry fibers are placed in an enclosed, matched…

11 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Brandley, M. W. (2015). Void Modeling in Resin Infusion. (Masters Thesis). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=6459&context=etd

Chicago Manual of Style (16^th Edition):

Brandley, Mark Wesley. “Void Modeling in Resin Infusion.” 2015. Masters Thesis, Brigham Young University. Accessed December 05, 2019. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=6459&context=etd.

MLA Handbook (7^th Edition):

Brandley, Mark Wesley. “Void Modeling in Resin Infusion.” 2015. Web. 05 Dec 2019.

Vancouver:

Brandley MW. Void Modeling in Resin Infusion. [Internet] [Masters thesis]. Brigham Young University; 2015. [cited 2019 Dec 05]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=6459&context=etd.

Council of Science Editors:

Brandley MW. Void Modeling in Resin Infusion. [Masters Thesis]. Brigham Young University; 2015. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=6459&context=etd

30. Ertekin, Ayca. Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites.

Degree: PhD, Polymer Engineering, 2008, University of Akron

URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1203418277

► In this research, the usage of single wall carbon nanotubes (SWNTs) and nanoclays in the resin transfer molding (RTM) of biaxially stitched micro-fiber reinforced… (more)

▼ In this research, the usage of single wall carbon nanotubes (SWNTs) and nanoclays in the resin transfer molding (RTM) of biaxially stitched micro-fiber reinforced epoxy matrix composites was investigated to evaluate the role of nanoscale reinforcements on the wetting, flow and end-properties of composites through multi-scale effects. The study primarily focused on characterization of the state of dispersion and curing of nanoscale reinforced epoxy polymers, assessment of the relative importance of viscous forces over interfacial forces and the wettability of glass fabrics by the nanoscale reinforced epoxy polymers, analysis of complex flow of nanoreinforced epoxy systems through glass fiber porous media by several flow properties and evaluation of the properties of hybrid epoxyglassfiber composites enriched with nanoscale particles. The presence of nanoreinforcements retarded the cure kinetics to some degree such that the activation energies increased with the nanoreinforcement content. Both theunsteady-state and steady-state relative tow permeabilities were observed to decrease as the nanoclay amount was increased. The presence of nanoclay was observed to reduce the "tow wet-out" with almost 50 % reduction in the steady-state tow permeability with the addition of 4 wt % nanoclay to the reactive epoxy. Contact angle measurements indicated, approximately 21 % increase in the contact angle with the addition of 4 wt % nanoclay to epoxy. It was found that beyond 0.3 wt % SWNT, RTM of epoxy-60 % biaxially stitched glass fiber systems was not feasible. It was also observed that an addition of SWNT at only 10 % the level of nanoclay caused almost a 25 % increase in steady-state pressure level along with almost an 18 % decrease in permeability. It is believed that nanoreinforcements affected flow rate somewhat differently along the various fabric capillary paths and thereby leading to preferential flow paths in the mold cavity. It is proposed that nanoparticles, particularly at high weight percentages, agglomerate during flow inside the mold cavity and block some intra-tow regions and lead to instabilities in the flow resulting in anomalous pressure differentials at different regions of the flow and unusual permeability results. While the use of nanoreinforcements reduced oxygen and moisture transport along with thermal expansion coefficient, the mechanical properties were found to decrease dueto the several defects, such as voids and agglomerates introduced during RTM as a result of the differential micro- and macro-flows. Advisors/Committee Members: Cavicchi, Kevin (Committee Chair), Goettler, Lloyd A. (Advisor), Jana, Sadhan C. (Advisor).

Subjects/Keywords: Engineering; Polymers; resin transfer molding; wetting; nanoreinforcements; epoxy; glass fiber; hybrid composites

…Resin Transfer Molding ��. �� …......137 3.5.1 Thermogravimetric Analysis (TGA)… …5.3 Summary �� .. �� …198 VI. ANALYSIS OF RESIN TRANSFER MOLDING OF EPOXY… …199 viii 6.1 Analysis of the Resin Transfer Molding of Nanoclay or Nanotube Enriched… …fibers via a conventional liquid composite molding (LCM) technique, resin transfer… …213 6.3 Summary….. �� 226 VII. PROPERTIES OF RESIN TRANSFER MOLDED…

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ertekin, A. (2008). Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites. (Doctoral Dissertation). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1203418277

Chicago Manual of Style (16^th Edition):

Ertekin, Ayca. “Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites.” 2008. Doctoral Dissertation, University of Akron. Accessed December 05, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1203418277.

MLA Handbook (7^th Edition):

Ertekin, Ayca. “Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites.” 2008. Web. 05 Dec 2019.

Vancouver:

Ertekin A. Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites. [Internet] [Doctoral dissertation]. University of Akron; 2008. [cited 2019 Dec 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1203418277.

Council of Science Editors:

Ertekin A. Analysis of Wetting, Flow and End-use Properties of Resin Transfer Molded Nanoreinforced Epoxy-glass Fiber Hybrid Composites. [Doctoral Dissertation]. University of Akron; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1203418277

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations