subject:(Composite Fabrication)

1. Mayer, Philippe. Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties.

Degree: Docteur es, Génie mécanique - procédés de fabrication, 2017, Paris, ENSAM

URL: http://www.theses.fr/2017ENAM0003

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L’objectif de ces travaux de thèse est de contribuer à la compréhension d’un procédé de mise en forme composite appelé EPITHER. Il s’agit d’un procédé… (more)

Subjects/Keywords: Composite; Procédé de fabrication; Mise en forme; Composite; Fabrication process; Forming

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

APA (6^th Edition):

Mayer, P. (2017). Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties. (Doctoral Dissertation). Paris, ENSAM. Retrieved from http://www.theses.fr/2017ENAM0003

Chicago Manual of Style (16^th Edition):

Mayer, Philippe. “Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties.” 2017. Doctoral Dissertation, Paris, ENSAM. Accessed March 04, 2021. http://www.theses.fr/2017ENAM0003.

MLA Handbook (7^th Edition):

Mayer, Philippe. “Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties.” 2017. Web. 04 Mar 2021.

Vancouver:

Mayer P. Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties. [Internet] [Doctoral dissertation]. Paris, ENSAM; 2017. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2017ENAM0003.

Council of Science Editors:

Mayer P. Contribution à la définition du processus de conception et de réalisation de pièces produitsà hautes caractéristiques spécifiques : Contribution to the definition of the fabrication process used to produced parts with high specific properties. [Doctoral Dissertation]. Paris, ENSAM; 2017. Available from: http://www.theses.fr/2017ENAM0003

Virginia Tech

2. Hull, Brandon Tristan. Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites.

Degree: MS, Aerospace Engineering, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/52629

► Individual carbon nanotubes have been theoretically and experimentally proven to be the strongest and stiffest materials discovered to date with tensile strengths ranging from 1-5… (more)

▼ Individual carbon nanotubes have been theoretically and experimentally proven to be the strongest and stiffest materials discovered to date with tensile strengths ranging from 1-5 TPa and elastic modulus values as high as 150 GPa. In this work, the recent development of continuous sheets of CNTs, produced by Nanocomp Technologies Inc ., are investigated for their potential as reinforcement in polymer matrix composite (PMC) materials. The potential of these nanotube-based PMC materials have been reported by researchers at Florida State University (FSU). Through the use of mechanical stretching procedures to increase the alignment of the nanotubes within the CNT sheets, the tensile strength and Young's modulus of the composites in the FSU study averaged 3081 MPa and 350 GPa, respectively. These values are for composites fabricated from 40% stretched CNT sheets and are 48% and 107% improvements over composites fabricated from the pristine, unstretched CNT sheets. However, the test specimens used in the FSU study consisted of a single CNT ply and each coupon was individually stretched and cured for testing. Therefore, the process used to generate the coupons which exhibited these high mechanical properties would be difficult to scale to a usable size for aerospace structural components. In the current study, a scalable process has been developed in which 2-ply, 3" x 3" panels of CNT and resin composites are fabricated. An apparatus and methodology for mechanically stretching the CNT sheets used in these composite panels has also been developed. After initial testing was conducted with the CNT composites and the coupons exhibited significant elongation at failure, along with the absence of a linear elastic region, conventional test standards for material testing were deemed impractical. For this reason, new mechanical testing methodologies have been developed to determine the mechanical properties of specific strength and specific modulus of CNT-polymer composites. In order to obtain the maximum benefits of a fiber in any matrix in terms of stiffness and strength, it is preferable to align the high strength and stiffness fibers in the direction of loading. Given that these CNT sheets essentially consist of billions of short, discontinuous CNTs of 2-3mmin length, the process of mechanical stretching is used in an attempt to align these tubes in the direction of the applied tensile load. Here we have explored methodologies for stretching, fabricating, and mechanical testing. Having identified a process which seems viable, an examination into the effect of the mechanical stretching to increase the alignment of the nanotubes within the CNT sheets, and thus to increase the material properties of the 2-ply composites constructed from them, is conducted. In order to correlate the enhancements in the mechanical properties with the increased alignment of the CNTs, polarized Raman spectroscopy techniques have been used. Lastly, Scanning Electron Microscopy (SEM) is used to examine the effect of stretching on the pristine CNT… Advisors/Committee Members: Seidel, Gary D. (committeechair), Grimsley, Brian William (committee member), Philen, Michael K. (committee member).

Subjects/Keywords: Carbon Nanotube; Composite Fabrication; Mechanical Stretching; Composite Tensile Testing; Raman Spectroscopy

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

APA (6^th Edition):

Hull, B. T. (2013). Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/52629

Chicago Manual of Style (16^th Edition):

Hull, Brandon Tristan. “Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites.” 2013. Masters Thesis, Virginia Tech. Accessed March 04, 2021. http://hdl.handle.net/10919/52629.

MLA Handbook (7^th Edition):

Hull, Brandon Tristan. “Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites.” 2013. Web. 04 Mar 2021.

Vancouver:

Hull BT. Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites. [Internet] [Masters thesis]. Virginia Tech; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10919/52629.

Council of Science Editors:

Hull BT. Examination of Mechanical Stretching to Increase Alignment in Carbon Nanotube Composites. [Masters Thesis]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/52629

3. El asswad, Mohamad. Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots.

Degree: Docteur es, Robotique, 2018, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2018SACLV023

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De nouvelles solutions basées sur la technologie de l'intégration hydraulique ont été introduites dans la mise en œuvre d'un système robotique humanoïde à actionnement hydraulique… (more)

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De nouvelles solutions basées sur la technologie de l'intégration hydraulique ont été introduites dans la mise en œuvre d'un système robotique humanoïde à actionnement hydraulique compact et léger. Pour ce faire, les chercheurs ont appliqué des méthodes et des technologies récentes basées sur des techniques d'usinage avancées et sur la fabrication additive de métaux. Malgré cela, ces méthodologies ont montré des limites liées non seulement au temps de réalisation, ce qui induit des coûts élevés, mais également au poids total du mécanisme obtenu. Ainsi, il important de développer des travaux de recherche sur de nouvelles méthodologies pour réaliser des mécanismes robotiques hydrauliques intégrés, compacts, légers et à faible coût économiques.C’est l’objet de travail développé dans cette thèse qui a pour objectif de proposer de nouvelles méthodologies pour la fabrication de composants mécaniques de robots humanoïdes à commande hydraulique. Cela concerne, en premier lieu, la fabrication additive de matériaux composites qui sera développée pour la réalisation des pièces structurelles classiques. En second lieu, deux nouvelles méthodologies sont proposées pour l’obtention de composants hydrauliques intégrés légers, avec une résistance élevée et un temps de réalisation et un coût réduits. La première méthodologie consiste à combiner la fabrication additive de polymères thermoplastiques et la simple formation de composites aléatoires en carbone. Tandis que la deuxième propose l'utilisation de tuyaux en silicone à la place des thermoplastiques imprimés tout en gardant le même matériau de renfort. Les deux méthodologies sont détaillées étape par étape et appliquées au bras du robot HYDROïD. Des gains importants sur le poids total du bras sont donnés. Par ailleurs, un nouvel vérin hydraulique composite léger est développé pour remplacer les vérins métalliques dont le poids est fatalement très élevé. Une procédure développée à partir du modèle de contraintes, passant par un processus d'optimisation et se terminant par la conception mécatronique est présentée. L’actionneur hydraulique est mis en œuvre et testé pour l'articulation du genou du robot HYDROïD et une proposition de généralisation à toutes les articulations est également avancée. Enfin, des perspectives à court et à moyen termes pour des développement ultérieur de nouvelles générations de systèmes robotiques à actionnement hydraulique intégré concluent cette thèse.

Modern researches have been inducted in the implementation of a compact and lightweight hydraulically actuated humanoid robotic systems, using the technology of hydraulic integration. In the a eld, researchers have applied recent technologies starting from advanced machining methodologies and ending with additive manufacturing of me-tals. Despite, these methodologies have shown inconvenient points related to cost, time and weight of the obtained mechanism. This motivates the research of new methodologies toward developing compact, cost effective and light-weight hydraulic integrated robotics mechanisms,…

Advisors/Committee Members: Ben Ouezdou, Fethi (thesis director), Alfayad, Samer (thesis director), Khalil, Khaled (thesis director).

Subjects/Keywords: Conception; Materiaux; Fabrication Additive; Composite; Robotique; Design; Material; Additive Manufacturing; Composite; Robotics; 629.89

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

APA (6^th Edition):

El asswad, M. (2018). Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2018SACLV023

Chicago Manual of Style (16^th Edition):

El asswad, Mohamad. “Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots.” 2018. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed March 04, 2021. http://www.theses.fr/2018SACLV023.

MLA Handbook (7^th Edition):

El asswad, Mohamad. “Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots.” 2018. Web. 04 Mar 2021.

Vancouver:

El asswad M. Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2018. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2018SACLV023.

Council of Science Editors:

El asswad M. Nouvelles méthodologies pour les robots humanoïdes intégrés hydrauliques légers : New Methodologies Toward Lightweight Hydraulic Integrated Humanoid Robots. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2018. Available from: http://www.theses.fr/2018SACLV023

Penn State University

4. Kim, Jeffrey Jason. FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS.

Degree: 2019, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/16440jjk5306

► Carbon/epoxy (c/ep) composite rotorcraft blades, consisting of carbon fibers in a matrix of epoxy, are commonly used to manufacture rotorcraft blades because of their good… (more)

▼ Carbon/epoxy (c/ep) composite rotorcraft blades, consisting of carbon fibers in a matrix of epoxy, are commonly used to manufacture rotorcraft blades because of their good balance of mass, stiffness, and strength properties. Recent interest in rigid (hingeless) rotorcraft blades has brought attention to the need for higher amounts of damping in c/ep rotorcraft blades. Previous investigations have demonstrated that adding small amounts of carbon nanotubes (CNTs) to epoxy increases damping without degrading stiffness by a combined effect of reinforcement and stick-slip behavior at the CNT/epoxy interface. Limited evidence in the literature suggests that CNTs increase the damping of c/ep composites, as well, although a more thorough investigation aimed maximizing the improvement in c/ep damping with CNTs and assessing damping behavior over a range of simulated operating conditions for rotorcraft blades is required to advance the state-of-the-art. The objectives of this investigation are to explore in detail the potential of CNTs for increasing the damping of c/ep laminates across a range of loading and environmental conditions. Because of the strain sensitivity of the stick-slip damping mechanism of CNTs and the high force required to develop meaningful strains in c/ep laminates, tensile tests in a servo-hydraulic load frame were used to acquire cyclic force and strain data as functions of time. Software was written to extract the phase shift between force and load along with the storage modulus (E’), loss modulus (E”), and loss factor (tan δ) under particular loading regimens and environmental conditions. Three types of CNTs, long CNT buckypaper, short CNT buckypaper, and aligned CNT yarn, and two types of surfactants, Triton X-100 and sodium dodecyl sulfate, were the primary material variations investigated. The combination of CNT yarn and Triton X-100 was selected over the other material variations due to its superior damping performance. The addition of 10 vol.% of aligned CNT yarn in [0/±45]s c/ep laminates increased tan δ and (E”) as much as 310% and 340%, respectively with negligible change in E’ and tensile strength. Following 106 cycles of strain excursions between 300 µε and 4000 µε in the [0/±45]s laminate with YN10%-TX4, tan δ increased by 42% versus the initial tan δ. Similear YN10%-TX4 laminates showed moderate increases in tan δ and E” as temperature was increased to 65°C. Advisors/Committee Members: Charles E Bakis, Thesis Advisor/Co-Advisor, Edward Smith, Thesis Advisor/Co-Advisor.

Subjects/Keywords: carbon epoxy composite; carbon nanotubes; stick-slip; damping; fabrication

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

APA (6^th Edition):

Kim, J. J. (2019). FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/16440jjk5306

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):

Kim, Jeffrey Jason. “FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS.” 2019. Thesis, Penn State University. Accessed March 04, 2021. https://submit-etda.libraries.psu.edu/catalog/16440jjk5306.

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

MLA Handbook (7^th Edition):

Kim, Jeffrey Jason. “FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS.” 2019. Web. 04 Mar 2021.

Vancouver:

Kim JJ. FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS. [Internet] [Thesis]. Penn State University; 2019. [cited 2021 Mar 04]. Available from: https://submit-etda.libraries.psu.edu/catalog/16440jjk5306.

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

Council of Science Editors:

Kim JJ. FABRICATION AND CHARACTERIZATION OF HIGH DAMPING CARBON FIBER COMPOSITES WITH CARBON NANOTUBE INTERLAYERS. [Thesis]. Penn State University; 2019. Available from: https://submit-etda.libraries.psu.edu/catalog/16440jjk5306

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

Brigham Young University

5. Pei, Lei. Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials.

Degree: PhD, 2011, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3924&context=etd

► In my research, I have performed many characterization and fabrication experiments that are based on tools of analytical chemistry, materials chemistry, and surface science. My… (more)

▼ In my research, I have performed many characterization and fabrication experiments that are based on tools of analytical chemistry, materials chemistry, and surface science. My research projects are as follows. (1) Fabrication of transparent polymer templates for nanostructured amorphous silicon photovoltaics was done using low-cost nanoimprint lithography of polydimethylsiloxane. This approach provides a test bed for absorption studies in nanostructured film geometries and should result in improved light capturing designs in thin-film solar cells. Nanopatterned polymer films were characterized by scanning electron microscopy and optical measurements. (2) A straightforward method for fabricating freely suspended, thin, carbon nanotube (CNT) membranes infiltrated with polymers was developed. This process is a new approach for making thin, reinforced, smooth films or membranes with high concentrations of CNTs, which may lead to higher performance materials. Characterization of the film and membrane was performed via scanning electron microscopy and atomic force microscopy. (3) Laser activation-modification of semiconductor surfaces (LAMSS) was carried out on silicon with a series of 1-alkenes. A key finding from this study is that the degree of surface functionalization in a LAMSS spot appears to decrease radially from the center of the spot. These laser spots were studied by time of flight secondary ion mass spectrometry (ToF-SIMS), and the resulting spectra were analyzed using a series of chemometrics methods. (4) A large ToF-SIMS data set from multiple coal samples spanning a wide range of coal properties was subjected to a chemometrics analysis. This analysis separates the spectra into clusters that correspond to measurements from classical combustion analyses. Thus ToF-SIMS appears to be a promising technique for analysis of this important fuel. (5) Several experiments on carbon nanotube processing were performed in my research, including carbon nanotube sheet formation, carbon nanotube purification, carbon nanotube dispersion, and carbon nanotube functionalization. X-ray photoelectron spectroscopy was a key characterization tool for many of these experiments.

Subjects/Keywords: surface modification; fabrication; characterization; carbon nanotube; silicon; polymer composite; Biochemistry; Chemistry

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

APA (6^th Edition):

Pei, L. (2011). Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3924&context=etd

Chicago Manual of Style (16^th Edition):

Pei, Lei. “Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials.” 2011. Doctoral Dissertation, Brigham Young University. Accessed March 04, 2021. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3924&context=etd.

MLA Handbook (7^th Edition):

Pei, Lei. “Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials.” 2011. Web. 04 Mar 2021.

Vancouver:

Pei L. Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials. [Internet] [Doctoral dissertation]. Brigham Young University; 2011. [cited 2021 Mar 04]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3924&context=etd.

Council of Science Editors:

Pei L. Surface Modification, Fabrication, and Characterization of Silicon, Polymer, and Nanotube Composite Materials. [Doctoral Dissertation]. Brigham Young University; 2011. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3924&context=etd

University of Illinois – Urbana-Champaign

6. Zhang, Bingyang. Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites.

Degree: MS, Mechanical Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90842

► As one of the emerging new composite materials, liquid-in-solid elastomer soft composites are of the current research interest for their enhanced mechanical properties and high… (more)

Subjects/Keywords: liquid-in-solid composite; fabrication; mechanical characterization; stiffening; toughening

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

APA (6^th Edition):

Zhang, B. (2016). Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90842

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):

Zhang, Bingyang. “Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed March 04, 2021. http://hdl.handle.net/2142/90842.

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

MLA Handbook (7^th Edition):

Zhang, Bingyang. “Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites.” 2016. Web. 04 Mar 2021.

Vancouver:

Zhang B. Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2142/90842.

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

Council of Science Editors:

Zhang B. Fabrication and mechanical characterization of liquid-in-solid elastomeric soft composites. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90842

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

7. Constantin, Loic. Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications.

Degree: Docteur es, Physico-Chimie de la Matière Condensée, 2020, Bordeaux; University of Nebraska-Lincoln

URL: http://www.theses.fr/2020BORD0066

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L'augmentation constante de la fréquence de travail des dispositifs à base de semi-conducteurs avec leur miniaturisation a conduit à une surchauffe sévère, qui affecte leur… (more)

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L'augmentation constante de la fréquence de travail des dispositifs à base de semi-conducteurs avec leur miniaturisation a conduit à une surchauffe sévère, qui affecte leur durée de vie et leur fiabilité. Par conséquent, la gestion thermique est devenue une préoccupation importante dans le domaine microélectronique et doit être abordée. Le diamant (D) est connu pour être un excellent matériau pour la dissipation thermique car il possède l'une des conductivités thermiques les plus élevées de tous les matériaux naturels et possède une résistivité électrique élevée. D peut refroidir les puces électroniques de deux manières. Lorsqu'il est utilisé sous forme de film, D agit comme un diffuseur de chaleur. Lorsqu'ils sont utilisés sous forme de poudre, les Ds peuvent être introduits dans les métaux pour améliorer leur conductivités thermiques (TC) et apporter une stabilité dimensionnelle à des températures élevées. Les matériaux composites métal / D résultants sont ainsi d'excellents composants pour former des dissipateurs thermiques. Naturellement, les performances thermiques des dissipateurs thermiques sont étroitement liées à leur surface. Malgré l'attrait des matériaux à base de D en termes de performances thermiques, ils présentent souvent une géométrie simple, principalement en raison de la complexité d’usiner des matériaux à base de D dans des formes complexes. L'impression laser 3D est une méthode émergente de fabrication de géométrie sophistiquées et a donné des résultats prometteurs pour divers métaux et alliages. Dans cette étude, l'impression 3D laser de matériaux composites cuivre / D est proposée pour fabriquer des structures complexes de Cu / D qui pourraient remodeler leurs applications. Avant de fabriquer des matériaux composites Cu / D de manière additive, plusieurs défis doivent être relevés. Premièrement, la fabrication additive de Cu pur est optimisée et caractérisée. Puis, faute d'une affinité chimique entre Cu et D, une interphase est introduite dans le matériau composite. Plus tard, un procédé de revêtement de sel fondu est étudié pour produire un revêtement gradué et multicouche d'oxyde / carbure et de carbure / carbure, respectivement, sur des matériaux carbones. Ensuite, la fabrication additive de structures composites Cu / D est présentée. Enfin, le dépôt des films D est réalisé avec une flamme oxyacétylénique assistée laser. Les effets de l'introduction de lasers ultraviolets dans la flamme sont caractérisés en termes de réaction chimique, de qualité du film D et de taux de croissance.

The constant increase of the working frequency of semiconductor-based devices with their miniaturization led to severe overheating, which affect their lifetime and reliability. Hence, thermal management has become a significant concern for the microelectronic area and needs to be addressed. Diamond (D) is known to be an excellent material for thermal dissipation as it possesses one of the highest thermal conductivity (TC) of any natural material and has a high electrical resistivity. D can cool electronic chips…

Advisors/Committee Members: Silvain, Jean-François (thesis director), Lu, Yongfeng (thesis director).

Subjects/Keywords: Fabrication additive; Matériau composite; Laser; Diamant; Cvd; Dissipateur de chaleur; Additive manufacturing; Composite material; Laser; Diamond; Cvd; Heat sink

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

APA (6^th Edition):

Constantin, L. (2020). Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications. (Doctoral Dissertation). Bordeaux; University of Nebraska-Lincoln. Retrieved from http://www.theses.fr/2020BORD0066

Chicago Manual of Style (16^th Edition):

Constantin, Loic. “Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications.” 2020. Doctoral Dissertation, Bordeaux; University of Nebraska-Lincoln. Accessed March 04, 2021. http://www.theses.fr/2020BORD0066.

MLA Handbook (7^th Edition):

Constantin, Loic. “Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications.” 2020. Web. 04 Mar 2021.

Vancouver:

Constantin L. Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications. [Internet] [Doctoral dissertation]. Bordeaux; University of Nebraska-Lincoln; 2020. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2020BORD0066.

Council of Science Editors:

Constantin L. Fabrication additive assisté laser de matériaux composites 3D et revêtement diamant par CVD : Laser 3D printing of Diamond-based Composite Materials for Thermal Management Applications. [Doctoral Dissertation]. Bordeaux; University of Nebraska-Lincoln; 2020. Available from: http://www.theses.fr/2020BORD0066

INP Toulouse

8. Salem, Mohamed Medhat. Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres.

Degree: Docteur es, Génie Mécanique, Mécanique des Matériaux, 2019, INP Toulouse

URL: http://www.theses.fr/2019INPT0117

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Les composites à renforts fibreux sont très prisés dans les industries de pointe comme l’aéronautique ou l’automobile du fait de leur rapport propriété mécanique/masse supérieur… (more)

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Les composites à renforts fibreux sont très prisés dans les industries de pointe comme l’aéronautique ou l’automobile du fait de leur rapport propriété mécanique/masse supérieur à celui des métaux. Leur mise en forme complexe présente de forts enjeux scientifiques, notamment pour les composites à renforts tissés. En effet, les renforts tissés sont sujets à l’apparition de défauts lors de leur mise en forme sur géométries complexes à double courbure. Certains de ces défauts ont déjà fait l’objet de plusieurs études alors que d’autres, comme les défauts de bouclage et de glissement des mèches, n’ont pour le moment pas encore été totalement explorés. À l’heure actuelle, les codes de simulations ne peuvent pas prédire précisément l’apparition et le développement des défauts de bouclage et de glissement des mèches lors de la mise en forme des renforts tissés. L’une des raisons est le manque de connaissances sur l’origine et la cinématique de développement de ces défauts. Ce travail de thèse propose d’apporter plus de compréhension sur ces défauts par une approche expérimentale et numérique. Concernant le défaut de bouclage, l’influence des tensions dans les réseaux de mèches, de la nature du renfort, de l’armure du renfort et des dimensions des mèches ont été étudiés. Pour le défaut de glissement, l’influence du type de renfort, des tensions dans les mèches, de l’armure du renfort et de l’orientation des mèches dans le renfort ont été explorés. Ces résultats ouvrent des perspectives concernant l’amélioration de la qualité des pièces composites.

Composites with fibrous reinforcements are extensively used in advanced industries such as aeronautics or the automotive industry because of their higher mechanical property/mass ratio compared to that of metals. Their complex shape forming presents major scientific challenges, particularly for composites with woven reinforcements. In fact, woven reinforcements are subject to defects when shaped on complex geometries with high curvature. Some of these defects have already been the subject of several studies, while others, such as the tow buckling and sliding defects, have not been fully explored yet. At this moment, simulation codes cannot accurately predict the occurrence and development of tow buckling and sliding defects during the shape forming of woven reinforcements. One of the reasons is the lack of knowledge about the origin and kinematics of these defects. This thesis work proposes to bring more understanding on these defects through an experimental and numerical approach. Concerning the tow buckling defect, the influence of tensions in the tows network, the nature of the reinforcement, the reinforcement weave and the dimensions of the tows have been studied. For the sliding defect, the influence of the type of reinforcement, tensions in the tows, the reinforcement weave and the orientation of the tows in the reinforcement have been explored. These results open up perspectives for improving the quality of composite parts.

Advisors/Committee Members: Ouagne, Pierre (thesis director), Fazzini, Marina (thesis director).

Subjects/Keywords: Procédé de fabrication composite; Mise en forme des textiles; Mesure de champs; Composite manufacturing process; Textile forming; Field measurement

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

APA (6^th Edition):

Salem, M. M. (2019). Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres. (Doctoral Dissertation). INP Toulouse. Retrieved from http://www.theses.fr/2019INPT0117

Chicago Manual of Style (16^th Edition):

Salem, Mohamed Medhat. “Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres.” 2019. Doctoral Dissertation, INP Toulouse. Accessed March 04, 2021. http://www.theses.fr/2019INPT0117.

MLA Handbook (7^th Edition):

Salem, Mohamed Medhat. “Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres.” 2019. Web. 04 Mar 2021.

Vancouver:

Salem MM. Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres. [Internet] [Doctoral dissertation]. INP Toulouse; 2019. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2019INPT0117.

Council of Science Editors:

Salem MM. Etude expérimentale et numérique des défauts de bouclage et de glissement lors de la mise en forme de composites structuraux à base de fibres synthétiques et végétales : Study of the buckling and sliding defects during the shape forming of structural composites based on synthetic and vegetable fibres. [Doctoral Dissertation]. INP Toulouse; 2019. Available from: http://www.theses.fr/2019INPT0117

University of South Carolina

9. Sabido, Anthony M. Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates.

Degree: MSin Aerospace Engineering, Computer Science and Engineering, 2019, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/5332

► An automated fiber placement process is desired for manufacturing variable-stiffness thermoplastic composite laminates. By developing such a composite laminate, it is possible to take… (more)

Subjects/Keywords: Aerospace Engineering; Engineering; Automated fiber placement process; fabrication; thermoplastic composite laminates; manufacturing

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

APA (6^th Edition):

Sabido, A. M. (2019). Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates. (Masters Thesis). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/5332

Chicago Manual of Style (16^th Edition):

Sabido, Anthony M. “Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates.” 2019. Masters Thesis, University of South Carolina. Accessed March 04, 2021. https://scholarcommons.sc.edu/etd/5332.

MLA Handbook (7^th Edition):

Sabido, Anthony M. “Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates.” 2019. Web. 04 Mar 2021.

Vancouver:

Sabido AM. Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates. [Internet] [Masters thesis]. University of South Carolina; 2019. [cited 2021 Mar 04]. Available from: https://scholarcommons.sc.edu/etd/5332.

Council of Science Editors:

Sabido AM. Development of an Automated Fiber Placement Process for the Fabrication of Thermoplastic Composite Laminates. [Masters Thesis]. University of South Carolina; 2019. Available from: https://scholarcommons.sc.edu/etd/5332

Indian Institute of Science

10. Singh, Rashmi. Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach.

Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3206

► Since 1970s, ever growing attention has been devoted by worldwide researchers and practitioners to the investigation of job release control. However, the need for control… (more)

▼ Since 1970s, ever growing attention has been devoted by worldwide researchers and practitioners to the investigation of job release control. However, the need for control of flow of job/wafer into the wafer fabrication system is identified in the late 1988s. Subsequently, many release policies are developed and presented in the literature for improving its performance with respect to cycle time and throughput. Even though it is pointed out in the literature that there is a need for the development and analysis of policy that control the flow of job/wafer through the manufacturing process, still there is no exhaustive study in view of the previously developed release policies in the literature. Moreover, many new opportunities have evolved in the field of release policy in wafer fabrication industry due to the advancement in technology and computer science. It implies that near real-time decision making for efficient release policy is possible based on the global factory state. However, it appears from the literature that still to date the release policies, which are employed in real wafer fabrication system, are usually based on the static information. Release control/policy is emerging as an important research topic in the wafer fabrication industry given the extremely large capital investment and sales revenue of this industry. Release policy also hold practical significance for manufacturing managers, since neglecting it can lead to wide variations in shop workloads, can cause excessive backlogs, accomplishment of orders will be either too early or too late and there can be frequent need for expediting. All the challenges associated with the performance of the wafer fabrication system discussed here and the puzzle around the release policies and its impact on the wafer fabrication process, this research attempts to investigate existing release policies and proposing a few efficient release policies based on the knowledge gained from the existing release policies strength and weakness. Based on the insights gained from the existing release policies, three new closed loop release policies constant workload (CONSTWL), constant batch machine workload (CONSTBWL) and layer wise control (LWC) are developed by considering the parameters: workload in general, workload in batch machine, and re-entrant characteristics of the wafer fabrication system respectively. The conceptual significance in favour of these proposed closed loop release policies in improving performance of the wafer fabrication system is also outlined in this study. In the literature, few researchers clearly indicate that dispatching rule(s) influence the performance of wafer fabrication system either independently or in integration with release policies. Therefore, to empirically validate this fact, release policy is integrated with dispatching rule particularly applying on bottleneck (discrete processing machine) work station in this study. With these, the aims of proposed release policies are to efficiently improve the system performances in terms of… Advisors/Committee Members: Mathirajan, M (advisor).

Subjects/Keywords: Job Release Control; Wafer Fabrication System; Wafer Fabrication; Open Loop Release Policies; Closed Loop Release Policies; Composite Dispatching Rules; Wafer Fab System; Job Flow Control; Release Control; Release Policies; Management

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

APA (6^th Edition):

Singh, R. (2018). Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3206

Chicago Manual of Style (16^th Edition):

Singh, Rashmi. “Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed March 04, 2021. http://etd.iisc.ac.in/handle/2005/3206.

MLA Handbook (7^th Edition):

Singh, Rashmi. “Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach.” 2018. Web. 04 Mar 2021.

Vancouver:

Singh R. Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Mar 04]. Available from: http://etd.iisc.ac.in/handle/2005/3206.

Council of Science Editors:

Singh R. Investigation of Existing Release Policies and Development of a Few Efficient Release Policies for Wafer Fabrication System - A Simulation Approach. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3206

11. Nisha, Nandakumar. Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber.

Degree: Polymer Science and Rubber Technology, 2013, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/4683

►

The Human race of our century is in gluttonous search for novel engineering products which led to a skyrocketed progress in research and fabrication of… (more)

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The Human race of our century is in gluttonous search for novel engineering products which led to a skyrocketed progress in research and fabrication of filled polymers. Recently, a big window has been opened up for speciality polymers especially elastomers with promising properties. Among the many reasons why rubbers are widely used in the process industries, three are considered as important. Firstly, rubbers operate in a variety of environments and possess usable ranges of deformity and durability and can be exploited through suitable and more or less conventional equipment design principles. Secondly, rubber is an eminently suitable construction material for protection against corrosion in the chemical plant and equipment against various corrosive chemicals as, acids and alkalies and if property tailored, can shield ionising radiations as X-rays and gamma rays in medical industry, with minimum maintenance lower down time, negligible corrosion and a preferred choice for aggressive corroding and ionising environment. Thirdly, rubber can readily and hastily, and at a relatively lower cost, be converted into serviceable products, having intricate shapes and dimensions. In a century’s gap, large employment of flexible polymer materials in the different segments of industry has stimulated the development of new materials with special properties, which paved its way to the synthesis of various nanoscale materials. At nano scale, one makes an entry into a world where multidisciplinary sciences meet and utilises the previously unapproached infinitesimal length scale, having dimension which measure upto one billionth of a meter, to create novel properties. The nano fillers augment the elastomers properties in an astonishing fashion due to their multifunctional nature and unprecedented properties have been exhibited by these polymer-nanocomposites just to beat the shortcomings of traditional micro composites. The current research aims to investigate the possibility of using synthesised nano barium sulphate for fabricating elastomer-based nanocomposites and thereby imparting several properties to the rubber. In this thesis, nano materials, their synthesis, structure, properties and applications are studied. The properties of barium sulphate like chemical resistance and radiopacity have been utilized in the present study and is imparted to the elastomers by preparing composites

Cochin University of Science and Technology

Subjects/Keywords: Building blocks in elastomer composite fabrication; Elastomers as matrix; Fillers; Nanotechnology; Barium sulphate; elastomer nano composites

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

APA (6^th Edition):

Nisha, N. (2013). Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/4683

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):

Nisha, Nandakumar. “Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber.” 2013. Thesis, Cochin University of Science and Technology. Accessed March 04, 2021. http://dyuthi.cusat.ac.in/purl/4683.

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

MLA Handbook (7^th Edition):

Nisha, Nandakumar. “Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber.” 2013. Web. 04 Mar 2021.

Vancouver:

Nisha N. Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber. [Internet] [Thesis]. Cochin University of Science and Technology; 2013. [cited 2021 Mar 04]. Available from: http://dyuthi.cusat.ac.in/purl/4683.

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

Council of Science Editors:

Nisha N. Radiopacity and Chemical resistance of Elastomer-Barium sulphate nanocomposites with special reference to Natural Rubber, Ethylene Propylene Rubber and Isobutylene Isoprene Rubber. [Thesis]. Cochin University of Science and Technology; 2013. Available from: http://dyuthi.cusat.ac.in/purl/4683

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

University of Waterloo

12. Wang, Nathan. Re-Imagining Concrete: A Material First Design Approach.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/15200

► This thesis asks the question: “What if we began the creative process of design with material?” In an age where digital images dominate the design… (more)

Subjects/Keywords: Concrete; ECC; Engineered Cementitious Composite; Fabrication; Craft; Craftsman; Making; Fabric-Cast; Sculpture; Creative Instinct; Workshop; Artist; Architecture; Artisan

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APA (6^th Edition):

Wang, N. (2019). Re-Imagining Concrete: A Material First Design Approach. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15200

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):

Wang, Nathan. “Re-Imagining Concrete: A Material First Design Approach.” 2019. Thesis, University of Waterloo. Accessed March 04, 2021. http://hdl.handle.net/10012/15200.

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

MLA Handbook (7^th Edition):

Wang, Nathan. “Re-Imagining Concrete: A Material First Design Approach.” 2019. Web. 04 Mar 2021.

Vancouver:

Wang N. Re-Imagining Concrete: A Material First Design Approach. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10012/15200.

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

Council of Science Editors:

Wang N. Re-Imagining Concrete: A Material First Design Approach. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/15200

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

North Carolina State University

13. Bradford, Philip David. Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites.

Degree: MS, Textile Engineering, 2007, North Carolina State University

URL: http://www.lib.ncsu.edu/resolver/1840.16/2920

► Carbon nanotube yarns are an emerging class of carbon nanotube materials that show great promise in composite applications. This research study was conducted to gain… (more)

Subjects/Keywords: polymer matrix; composite fabrication; tensile testing; nanocomposites

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APA (6^th Edition):

Bradford, P. D. (2007). Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/2920

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):

Bradford, Philip David. “Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites.” 2007. Thesis, North Carolina State University. Accessed March 04, 2021. http://www.lib.ncsu.edu/resolver/1840.16/2920.

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

MLA Handbook (7^th Edition):

Bradford, Philip David. “Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites.” 2007. Web. 04 Mar 2021.

Vancouver:

Bradford PD. Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites. [Internet] [Thesis]. North Carolina State University; 2007. [cited 2021 Mar 04]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2920.

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

Council of Science Editors:

Bradford PD. Mechanical Characterization and Morphology Study of a Novel Class of Carbon Nanotube Textiles and Composites. [Thesis]. North Carolina State University; 2007. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2920

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

14. M'Barki, Amin. 3D Printed boehmite based objects : Impression 3D d'objets en boehmite.

Degree: Docteur es, Matériaux, 2018, Lyon

URL: http://www.theses.fr/2018LYSE1021

►

La micro extrusion (ou DIW) est une technique de fabrication additive basée sur le dépôt continu de filaments couche par couche. Utilisée pour l'impression de… (more)

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La micro extrusion (ou DIW) est une technique de fabrication additive basée sur le dépôt continu de filaments couche par couche. Utilisée pour l'impression de structures poreuses, le DIW de céramiques denses et résistantes reste un défi. L'avantage du DIW réside dans sa capacité à produire des composites, offrant la possibilité de combiner la mise en forme complexe à un contrôle microstructural et fonctionnel précis de matériaux bioinspirés par exemple.Notre travail se concentre sur l'utilisation de gels de boehmite, un précurseur d'Al2O3, en tant que matrice céramique pour obtenir différentes microstructures. Des légers changements dans la composition des gels conduisent à des microstructures et donc à des propriétés différentes. En combinant la polyvalence microstructurale de ces gels avec une maîtrise rhéologique, on peut imprimer des composites avec des propriétés mécaniques améliorées.L'impression de céramiques denses et résistantes passe par la compréhension des propriétés rhéologiques qui définissent une encre imprimable. Le vieillissement de la boehmite est idéal pour corréler les critères géométriques avec la rhéologie pour fournir un critère universel pour l'imprimabilité. Aussi, l'écoulement à l'intérieur des buses de DIW peut aligner des plaquettes d'alumine pendant l'impression. Ceci fournit à l'objet imprimé une ténacité à la rupture accrue dans la direction souhaitée, avec la possibilité de dévier la propagation de la fracture. Un objet peut ainsi être conçu avec précision, en alternant des couches denses et des couches tenaces pour combiner la complexité de la forme avec l'adaptation du comportement mécanique

Direct Ink Writing is an additive manufacturing technique based on continuous layer-by-layer filament deposition. Mostly used to print porous structures, DIW of dense and strong ceramic objects remains an open challenge. However, the advantage of DIW resides in its ability to print multimaterial objects, offering the possibility to combine complex shaping to precise microstructural and functional control, from bioinspired materials, to novel composite structures.Our work focuses on using boehmite gels for DIW, an Al2O3 precursor, as a ceramic matrix to obtain different microstructures. Very small changes to the gels composition lead to completely different microstructures and hence, functional properties. By combining the microstructural versatility of boehmite gels with an understanding of rheology, we are able to print micro and macrocomposites with enhanced mechanical properties. Printing dense and strong ceramic objects starts with understanding the rheological properties that define a printable ink. Boehmite suspensions were ideal to correlate geometrical criteria with rheology and surface tension effects to provide a universal figure of merit for printability. We take advantage of the flow behavior inside DIW nozzles to align alumina platelets during printing. This provides the printed object with increased fracture toughness in the desired direction, with the ability to deviate the…

Advisors/Committee Members: Bocquet, Lydéric (thesis director), Stevenson, Adam J. (thesis director).

Subjects/Keywords: Fabrication additive; Céramique; Rhéologie; Boehmite; Composite; Bioinspirés; Propriétés mécaniques; Additive manufacturing; Ceramics; Rheology; Boehmite; Composites; Bioinspired; Mechanical properties; 620.1

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

APA (6^th Edition):

M'Barki, A. (2018). 3D Printed boehmite based objects : Impression 3D d'objets en boehmite. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2018LYSE1021

Chicago Manual of Style (16^th Edition):

M'Barki, Amin. “3D Printed boehmite based objects : Impression 3D d'objets en boehmite.” 2018. Doctoral Dissertation, Lyon. Accessed March 04, 2021. http://www.theses.fr/2018LYSE1021.

MLA Handbook (7^th Edition):

M'Barki, Amin. “3D Printed boehmite based objects : Impression 3D d'objets en boehmite.” 2018. Web. 04 Mar 2021.

Vancouver:

M'Barki A. 3D Printed boehmite based objects : Impression 3D d'objets en boehmite. [Internet] [Doctoral dissertation]. Lyon; 2018. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2018LYSE1021.

Council of Science Editors:

M'Barki A. 3D Printed boehmite based objects : Impression 3D d'objets en boehmite. [Doctoral Dissertation]. Lyon; 2018. Available from: http://www.theses.fr/2018LYSE1021

Georgia Tech

15. Suresh, Srinidhi. Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators.

Degree: MS, Materials Science and Engineering, 2020, Georgia Tech

URL: http://hdl.handle.net/1853/62819

► There is an increasing need for voltage regulators to be integrated closer to active devices such as CPUs and GPUs. These integrated voltage regulators (IVRs)… (more)

▼ There is an increasing need for voltage regulators to be integrated closer to active devices such as CPUs and GPUs. These integrated voltage regulators (IVRs) provide numerous performance benefits including higher efficiency, lower parasitics, and increased functionality while miniaturizing the overall system size. However, passive components i.e. inductors, generally occupy the largest volume in power distribution networks (PDNs). Therefore, realizing high-density inductors with ultra-thin form-factors is the main bottleneck to enable highly miniaturized heterogeneous integration of IVRs. An approach that can design cores and topologies with ultra-high inductance density without increasing the real-estate by using low-cost integration processes is required to address the challenges of developing inductors for IVRs. Metal-polymer composites (MPCs)-based interleaved substrate-embedded toroid inductors can meet all the criteria. MPCs as cores for inductor packages have high permeability, high resistivity, low eddy current losses and high frequency stability. An embedded interleaved toroid inductor topology using MPC cores can provide 50% more inductance, 33% higher Q-factor for the same DC resistance compared to an embedded solenoid topology. The combination of better material properties of MPCs, with an efficient toroid topology provides very high inductance densities at smaller inductor sizes, while maintaining low losses and DC resistance. The proposed work aims to improve upon current material approaches for inductor fabrication by providing better density, reduced thickness and DC resistance in a package-integrated format. This work aims to provide a basic understanding of the performance of a single-inductor using embedded toroid approach and the properties that govern its electrical behavior which can be further be scaled to coupled/tapped inductors in next-generation systems. Advisors/Committee Members: Tummala, Rao (advisor), Swaminathan, Madhavan (advisor), Garmestani, Hamid (committee member).

Subjects/Keywords: Integrated voltage regulator; Inductor; Metal polymer composite; Toroid inductor; 48V-1V; Inductance density; DC resistance; Fabrication process

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

APA (6^th Edition):

Suresh, S. (2020). Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62819

Chicago Manual of Style (16^th Edition):

Suresh, Srinidhi. “Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators.” 2020. Masters Thesis, Georgia Tech. Accessed March 04, 2021. http://hdl.handle.net/1853/62819.

MLA Handbook (7^th Edition):

Suresh, Srinidhi. “Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators.” 2020. Web. 04 Mar 2021.

Vancouver:

Suresh S. Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators. [Internet] [Masters thesis]. Georgia Tech; 2020. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1853/62819.

Council of Science Editors:

Suresh S. Modeling, design and fabrication of substrate-embedded inductors with high inductance density and low DC resistance for integrated voltage regulators. [Masters Thesis]. Georgia Tech; 2020. Available from: http://hdl.handle.net/1853/62819

University of Colorado

16. Wiesenauer, Brian R. Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications.

Degree: PhD, Chemistry & Biochemistry, 2013, University of Colorado

URL: https://scholar.colorado.edu/chem_gradetds/104

► The overall objective of this thesis research was the design and synthesis of new type I bicontinuous cubic (Q_I) phase-forming, gemini-shaped lyotropic liquid crystal… (more)

▼ The overall objective of this thesis research was the design and synthesis of new type I bicontinuous cubic (Q_I) phase-forming, gemini-shaped lyotropic liquid crystal (LLC) monomers for the preparation of nanoporous polymer membrane materials. These new Q_I -phase LLC monomers were designed to overcome several shortcomings of previously developed Q_I -phase LLC monomers in the Gin research group that include expensive and difficult synthesis, poor film processibility, and limited blendability with additives. The first method for obtaining this objective was the synthesis of six homologues of a new gemini ammonium LLC monomer, two of which exhibit a Q_I phase with water. Both of these LLCs form a robust Q_I phase such that a gel of these materials can be fully infused into a microporous support membrane and then cross-linked to maintain the LLC phase structure. The resulting Q_I -phase polymer film showed a uniform pore size of 0.86 nm in water nanofiltration and desalination experiments. This Q_I monomer platform is less costly and less rigorous to synthesize than previously synthesized phosphonium-based gemini Q_I LLC monomers. These new LLC monomers also have the ability to blend with the hydrophobic, commercially available cross-linkable elastomer vinyl-EPDM (v-EPDM) to form breathable composite barrier materials. In the appropriate composition, melt-infused gemini ammonium monomer/v-EPDM polymer membranes exhibit extremely high pure water vapor fluxes, and high rejection of toxic industrial chemical vapors. A new cross-linkable gemini LLC monomer based on charged imidazolium units was also developed that forms a Q_I phase with glycerol. This new LLC monomer can be solution-cast from MeOH and UV-irradiated to form cross-linked thin-film composite Q_I membranes with slightly larger effective pore size (0.96 nm) than the previous systems. A related goal of this thesis research was to develop methods for systematically tuning the effective pore size of nanoporous Q_I polymer-based materials by using glycerol-based LLC monomer/monomer blends. While a number of these LLC monomer/monomer blends exhibited potential Q_I phases in glycerol, the Q_I LLC phases formed were only relatively stable in the bulk state. Unfortunately, attempts to cross-link these Q_I phase monomer/monomer blends resulted in a small degree of phase disruption and phase separation. Advisors/Committee Members: Douglas L. Gin, Wei Zhang, Richard D. Noble, David M. Walba, Brian J. Elliott.

Subjects/Keywords: imidazolium monomers; lyotropic liquid crystals; membrane fabrication; thin-film composite; Chemistry; Materials Science and Engineering; Organic Chemistry

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APA (6^th Edition):

Wiesenauer, B. R. (2013). Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/chem_gradetds/104

Chicago Manual of Style (16^th Edition):

Wiesenauer, Brian R. “Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications.” 2013. Doctoral Dissertation, University of Colorado. Accessed March 04, 2021. https://scholar.colorado.edu/chem_gradetds/104.

MLA Handbook (7^th Edition):

Wiesenauer, Brian R. “Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications.” 2013. Web. 04 Mar 2021.

Vancouver:

Wiesenauer BR. Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications. [Internet] [Doctoral dissertation]. University of Colorado; 2013. [cited 2021 Mar 04]. Available from: https://scholar.colorado.edu/chem_gradetds/104.

Council of Science Editors:

Wiesenauer BR. Design and Synthesis of New Type I Bicontinuous Cubic Lyotropic Liquid Crystal Monomers Based on the Gemini Framework for Molecular-Size Separation Applications. [Doctoral Dissertation]. University of Colorado; 2013. Available from: https://scholar.colorado.edu/chem_gradetds/104

Delft University of Technology

17. Bergsma, O.K. Three Dimensional Simulation of Fabric Draping.

Degree: 1995, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1

Subjects/Keywords: composite; fabric; simulation; fabrication process; finite element analysis

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APA (6^th Edition):

Bergsma, O. K. (1995). Three Dimensional Simulation of Fabric Draping. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1

Chicago Manual of Style (16^th Edition):

Bergsma, O K. “Three Dimensional Simulation of Fabric Draping.” 1995. Doctoral Dissertation, Delft University of Technology. Accessed March 04, 2021. http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1.

MLA Handbook (7^th Edition):

Bergsma, O K. “Three Dimensional Simulation of Fabric Draping.” 1995. Web. 04 Mar 2021.

Vancouver:

Bergsma OK. Three Dimensional Simulation of Fabric Draping. [Internet] [Doctoral dissertation]. Delft University of Technology; 1995. [cited 2021 Mar 04]. Available from: http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1.

Council of Science Editors:

Bergsma OK. Three Dimensional Simulation of Fabric Draping. [Doctoral Dissertation]. Delft University of Technology; 1995. Available from: http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; urn:NBN:nl:ui:24-uuid:517916f3-9692-4e11-beb8-634fbfedf8d1 ; http://resolver.tudelft.nl/uuid:517916f3-9692-4e11-beb8-634fbfedf8d1

18. Pouzet, Sébastien. Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion.

Degree: Docteur es, Mécanique-matériaux, 2015, Paris, ENSAM

URL: http://www.theses.fr/2015ENAM0051

►

Les composites à matrice titane (CMTi) sont des matériaux attractifs pour des applications aéronautiques, en raison de leurs performances mécaniques à haute température et de… (more)

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Les composites à matrice titane (CMTi) sont des matériaux attractifs pour des applications aéronautiques, en raison de leurs performances mécaniques à haute température et de leur faible densité. La difficulté d’usiner ce type de matériaux rend les procédés de fabrication additive intéressants pour la fabrication de pièces complexes en trois dimensions. Cette étude porte sur l'élaboration de composites à matrice titane par le procédé de fabrication additive par fusion laser de poudre projetée. Dans un premier temps, différents types de poudres- renfort et de préparations de poudre ont été utilisés pour faciliter la mise en œuvre du procédé additif, dans le but d’obtenir des microstructures homogènes. Dans un second temps, l’étude s’est concentrée sur le mélange Ti-6Al-4V / B4C formant des renforts TiB et TiC par voie in-situ dans une matrice de Ti-6Al-4V. Les mécanismes de formation des microstructures obtenues ont pu être expliqués puis une étude des propriétés mécaniques (dureté, module d’Young et comportement sous une sollicitation en traction à chaud et à l’ambiante) a été réalisée afin d’évaluer l’effet du renforcement sur les propriétés mécaniques du matériau. Parmi les résultats importants ce cette étude, la présence de taux de carbone élevés en solution solide dans la matrice de titane a été évoqué comme étant le facteur prédominant dans l'augmentation des propriétés mécaniques avec le taux de B4C.

Titanium matrix composites are attractive materials for aeronautical applications, mainly because of their superior mechanical resistance at elevated temperature, combined with a low density. The critical machinability of such composites makes additive manufacturing processes particularly adapted for building complex 3D shapes. This study has been focused on the Direct Metal Deposition (DMD) of Metal matrix composites. In a first step, various powders and powder blends have been carried out in order to facilitate the DMD process and to obtain homogeneous microstructures. Following this, Ti-6Al-4V / B4C powder blends, allowing to obtain TiB + TiC particles distributed in the Ti matrix were more specifically considered. Metallurgical mechanisms involved in the formation of microstructures were identified prior to an investigation on mechanical properties at ambient and elevated temperature for various DMD process conditions and particle concentrations. Among the most interesting results of this study, the influence of a high carbon content solubilized in the Ti-matrix was considered as a dominant factor to explain the evolution of mechanical properties with increased amounts of reinforcements.

Advisors/Committee Members: Peyre, Patrice (thesis director), Castelnau, Olivier (thesis director).

Subjects/Keywords: Fabrication additive; Composite à matrice métallique; Fusion; Laser; Poudre projetée; Titane; Dmd; Additive Manufacturing; Titanium metal matrix composites; Fusion; Laser; Powder

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

APA (6^th Edition):

Pouzet, S. (2015). Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion. (Doctoral Dissertation). Paris, ENSAM. Retrieved from http://www.theses.fr/2015ENAM0051

Chicago Manual of Style (16^th Edition):

Pouzet, Sébastien. “Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion.” 2015. Doctoral Dissertation, Paris, ENSAM. Accessed March 04, 2021. http://www.theses.fr/2015ENAM0051.

MLA Handbook (7^th Edition):

Pouzet, Sébastien. “Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion.” 2015. Web. 04 Mar 2021.

Vancouver:

Pouzet S. Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion. [Internet] [Doctoral dissertation]. Paris, ENSAM; 2015. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2015ENAM0051.

Council of Science Editors:

Pouzet S. Fabrication additive de composites à matrice titane par fusion laser de poudre projetée : Additive manufacturing Of titanium matrix composites by powder laser fusion. [Doctoral Dissertation]. Paris, ENSAM; 2015. Available from: http://www.theses.fr/2015ENAM0051

University of Arkansas

19. Maiga, Abdoul Kader. Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor.

Degree: MSME, 2015, University of Arkansas

URL: https://scholarworks.uark.edu/etd/1318

► The primary objective for this thesis is to contribute to the understanding of the oxide removal process for a corrosion sensing device. The goal… (more)

▼ The primary objective for this thesis is to contribute to the understanding of the oxide removal process for a corrosion sensing device. The goal for designing such a device is for monitoring corrosion on metallic structures. The sensing material (6.35mm x 1mm discs) of the device is composed of copper (I) oxide particles mixed in some polydimethylsiloxane (PDMS). The PDMS, “housing,” is meant for controlling the oxidation rate through the sensing material. A solvent was used to facilitate the etchant diffusion through the PDMS matrix. Toluene and acetic acid were the ideal solvent and etchant, respectively, for carrying out the oxide removal process. [1] The experimental setup used a Microsoft® LifeCam to measure the expansion of the sensing material submitted to the oxide removal process. LabVIEW™ and Vision Assistant™ where used to acquire and store the swelling data, which was then analyzed in Matlab®. There were two oxide removal processes adopted in this thesis. The first process consisted of submerging the copper (I) oxide to PDMS composite sample in toluene until it reached its known maximum growth size and then adding the etchant to carry out the oxide removal process. This process proved to be efficient and failure proof. Though the time for reaching maximum growth weighed against the oxide removal time, this process ensured a thorough oxide etching within the sensing material. The second process consisted of premixing the solvent and etchant prior to submerging the copper (I) oxide to PDMS composites. The second process proved to be faster than the first process, since the sample was not initially grown to its maximum size, with an average time constant (maximum swelling and supposedly complete oxide removal time) differed by about half the average time constant of the first process. Two different growth instances with two different time constants were observed on the graphs of the second process. These instances could be caused by the removal of the oxide which had previously stiffened the PDMS structure prohibiting the solvent from reaching certain areas of the PDMS’s matrix. Once the oxide removed, those areas were exposed permitting the solvent to have access thus causing a second distinct growth instance for the same copper (I) oxide composite sample. Advisors/Committee Members: Po-Hao A. Huang, David C. Jensen, Uchechukwu C. Wejinya.

Subjects/Keywords: Applied sciences; Composite materials; Corrosion; Mems; Nabo particles; Novel technologies; Sensors; Electro-Mechanical Systems; Nanotechnology Fabrication; Other Chemical Engineering

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APA (6^th Edition):

Maiga, A. K. (2015). Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/1318

Chicago Manual of Style (16^th Edition):

Maiga, Abdoul Kader. “Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor.” 2015. Masters Thesis, University of Arkansas. Accessed March 04, 2021. https://scholarworks.uark.edu/etd/1318.

MLA Handbook (7^th Edition):

Maiga, Abdoul Kader. “Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor.” 2015. Web. 04 Mar 2021.

Vancouver:

Maiga AK. Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor. [Internet] [Masters thesis]. University of Arkansas; 2015. [cited 2021 Mar 04]. Available from: https://scholarworks.uark.edu/etd/1318.

Council of Science Editors:

Maiga AK. Swelling-Etching Characterization of Copper (I) Oxide - PDMS for the Development of Micro/Nano - Particles Composite MEMS Corrosion Sensor. [Masters Thesis]. University of Arkansas; 2015. Available from: https://scholarworks.uark.edu/etd/1318

20. Wernet, Judith Hedwig. Composite and microcomposite fabrication via depletion stabilization routes.

Degree: PhD, Chemical Engineering, 1995, Case Western Reserve University School of Graduate Studies

URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1061910390

► The colloidal phenomena of depletion stabilization and flocculation can be used to prepare high solids content slips with good fluidity. In this work these methods… (more)

▼ The colloidal phenomena of depletion stabilization and flocculation can be used to prepare high solids content slips with good fluidity. In this work these methods have been utilized as processing techniques to provide a controllable means by which monolayer and thicker coatings of matrix powder can be applied to fibers. External control of the particle-particle interactions dominating the stability of these slips reflects directly in the quality of the fiber coatings. As a result, ideal processing conditions for optimal coatings of fibers can be identified. Uniform coatings of up to 6 μm thick on AVCO SCS-6 fibers have been produced from slips of 0.07-0.3 μm diameter Si powder prepared using depletion strategies. The technique is effective even for asymmetric particle shapes (e.g. angular platelets) and wider size distributions. However, more uniform shapes and smaller size distributions were observed to result in dramatically improved, densely packed coatings.Optimum processing conditions with maximum slurry solids loading and maximum particle-particle stability obtained using the depletion stabilization phenomena were scaled up for fiber weave infiltrations. Infiltrated weaves were cold and hot pressed and nitrided to enable evaluation of the infiltration quality via SEM examination of cross sections of the infiltrated weaves. High quality Nicalon square and satin weave infiltrations were achieved using the depletion stabilization colloidal processing technique. Nitrided weave cross sectional samples showed a uniform infiltration of silicon powder throughout the matrix. A variety of additional weave styles and fiber types were infiltrated to determine the robustness of the technique. These weave styles were similarly uniformly infiltrated throughout. An analysis was performed on the coating of a non-Newtonian fluid onto a vertical fiber surface continuously withdrawn from the fluid bath. The fiber coating thickness was determined to be a function of the fiber pulling speed, the fluid density and the parameters of the viscous model of the silicon slurry used. The analytic treatment also predicts the velocity profile of the fluid on the fiber surface in the region of constant coating thickness as a function of fiber pulling speed. The penetration of the slurry into a fiber bundle was also analyzed. The approximate penetration was estimated using the non-Newtonian fluid properties and fiber bundle parameters Advisors/Committee Members: Feke, Donald (Advisor).

Subjects/Keywords: Engineering, Chemical; Composite/Microcomposite fabrication; Depletion stabilization

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APA (6^th Edition):

Wernet, J. H. (1995). Composite and microcomposite fabrication via depletion stabilization routes. (Doctoral Dissertation). Case Western Reserve University School of Graduate Studies. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1061910390

Chicago Manual of Style (16^th Edition):

Wernet, Judith Hedwig. “Composite and microcomposite fabrication via depletion stabilization routes.” 1995. Doctoral Dissertation, Case Western Reserve University School of Graduate Studies. Accessed March 04, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1061910390.

MLA Handbook (7^th Edition):

Wernet, Judith Hedwig. “Composite and microcomposite fabrication via depletion stabilization routes.” 1995. Web. 04 Mar 2021.

Vancouver:

Wernet JH. Composite and microcomposite fabrication via depletion stabilization routes. [Internet] [Doctoral dissertation]. Case Western Reserve University School of Graduate Studies; 1995. [cited 2021 Mar 04]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1061910390.

Council of Science Editors:

Wernet JH. Composite and microcomposite fabrication via depletion stabilization routes. [Doctoral Dissertation]. Case Western Reserve University School of Graduate Studies; 1995. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1061910390

Université de Grenoble

21. Gloaguen, François. Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell.

Degree: Docteur es, Matériaux, Mécanique, Génie civil, Electrochimie, 2013, Université de Grenoble

URL: http://www.theses.fr/2013GRENI025

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Cette thèse a pour but de contribuer à la mise au point et le développement, de plaques mono ou bipolaires composites pour piles à combustibles… (more)

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Cette thèse a pour but de contribuer à la mise au point et le développement, de plaques mono ou bipolaires composites pour piles à combustibles à membranes échangeuses de protons (ou PEMFC). Les plaques mono ou bipolaires (selon le type de refroidissement choisi) sont un élément essentiel au fonctionnement des piles car elles l’alimentent en gaz réactifs (hydrogène et oxygène de l’air), assurent la tenue mécanique des cellules, la séparation des compartiments anodique et cathodique, le collectage des électrons, et l’évacuation des « sous-produits » eau et chaleur. L’optimisation des propriétés physico-chimiques et mécaniques des plaques, et de leur procédé d’élaboration, permettra de rendre de ce fait la technologie pile à combustible plus accessible Après une étude bibliographique centrée sur les systèmes composites à taux de charges ou de renforts élevé et leurs propriétés physicochimiques, mécaniques et électriques, la 2ème phase sera axée sur une contribution à l’optimisation des formulations par des analyses morphologiques, physiques et physicochimiques pertinentes. La 3ème phase sera dédiée à l’analyse des plaques mono ou bipolaires après tests en piles afin de permettre des choix entre les différentes formulations ou procédés de mise en œuvre des plaques mono et bipolaires et dégager des paramètres pertinents reliés aux propriétés d’usage et à leur évolution au cours du temps en conditions réelles d’utilisation.

The objective of this work is to design carbon polymer composites for bipolar plates, with high and homogeneous electrical and mechanical properties. A method was designed in order to analyze the electrical conductivity homogeneity of the bipolar plates. Several designs of experiments were formulated after optimization of the most influencing formulation parameters on the use properties. This first step enhanced the use properties of the resulting materials, though insufficiently. The plates characterization showed highly heterogeneous and anisotropic use properties. The fabrication process conditions optimization (thermosets formulations) and the addition of an annealing step (thermoplastic formulations) then improved significantly the use properties and their homogeneity.

Advisors/Committee Members: Alberola, Nicole (thesis director), Flandin, Lionel (thesis director).

Subjects/Keywords: Plaque bipolaire; Pile à combustible; Composite polymère conducteur; Formulation; Procédé de mise en oeuvre; Bipolar plate; Fuel cell; Conductive polymer composite; Formulation; Fabrication process

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

APA (6^th Edition):

Gloaguen, F. (2013). Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2013GRENI025

Chicago Manual of Style (16^th Edition):

Gloaguen, François. “Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell.” 2013. Doctoral Dissertation, Université de Grenoble. Accessed March 04, 2021. http://www.theses.fr/2013GRENI025.

MLA Handbook (7^th Edition):

Gloaguen, François. “Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell.” 2013. Web. 04 Mar 2021.

Vancouver:

Gloaguen F. Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell. [Internet] [Doctoral dissertation]. Université de Grenoble; 2013. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2013GRENI025.

Council of Science Editors:

Gloaguen F. Etude et développement de plaques composites bipolaires pour piles à combustible : Study and development of composite bipolar plates for fuel cell. [Doctoral Dissertation]. Université de Grenoble; 2013. Available from: http://www.theses.fr/2013GRENI025

Sardar Patel University

22. Patel, Nirmit Natvarbhai. Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s.

Degree: chemistry, 2013, Sardar Patel University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/34615

None newline

Reference given in the each chapter.

Advisors/Committee Members: Patel, H S.

Subjects/Keywords: composite fabrication; conductometric titration; interacting blends; polycarbonates; polycondensation; polyesters; polymer blends; thermogravimetric

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

APA (6^th Edition):

Patel, N. N. (2013). Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s. (Thesis). Sardar Patel University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/34615

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):

Patel, Nirmit Natvarbhai. “Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s.” 2013. Thesis, Sardar Patel University. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/34615.

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

MLA Handbook (7^th Edition):

Patel, Nirmit Natvarbhai. “Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s.” 2013. Web. 04 Mar 2021.

Vancouver:

Patel NN. Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s. [Internet] [Thesis]. Sardar Patel University; 2013. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34615.

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

Council of Science Editors:

Patel NN. Studies on interacting blends of commercial unsaturated polyesters and epoxy residue containing unsaturated poly ester amide s. [Thesis]. Sardar Patel University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34615

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

23. Moretti, Laure. Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave.

Degree: Docteur es, Génie mécanique, mécanique des matériaux, 2019, Ecole nationale des Mines d'Albi-Carmaux

URL: http://www.theses.fr/2019EMAC0009

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Les composites stratifiés en fibres de carbone et à matrices thermodurcissables sont, grâce à leurs propriétés spécifiques, des matériaux très performants pour les pièces de… (more)

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Les composites stratifiés en fibres de carbone et à matrices thermodurcissables sont, grâce à leurs propriétés spécifiques, des matériaux très performants pour les pièces de structure primaire en aéronautique. Cependant, durant leur élaboration, de nombreux phénomènes multi-physiques conduisent à l’apparition de contraintes et de déformations résiduelles qui impactent la géométrie finale de la pièce. Ces écarts de géométrie sont critiques pour les pièces de grandes dimensions et les assemblages. Il est donc primordial de prédire ces déformations par la simulation. Le travail effectué au cours de cette thèse s’inscrit au sein du projet MAESTRIA du CORAC porté par la DGAC et dans le cadre d’un partenariat étroit avec Dassault Aviation. La recherche menée s’intéresse plus particulièrement aux assemblages co-collés. Le film de colle époxy utilisé pour ces collages a un comportement propre et risque d’avoir une influence sur les déformations de cuisson des assemblages. La colle, souvent ignorée dans les simulations de cuisson, a donc fait l’objet d’une caractérisation et d’une modélisation propre. Un effort de caractérisation important est fourni afin d’identifier les lois de comportement associées aux variations des propriétés des matériaux au cours de la cuisson. Une fois les lois de comportement matériaux identifiées, la modélisation FEA est implémentée sous Abaqus via des subroutines utilisateurs FORTRAN. Le modèle a ensuite été confronté à des cas expérimentaux. Des mesures de distorsions de plaques, cornières et assemblages sont effectuées. Si le modèle fournit des résultats très satisfaisants pour les pièces composites, les résultats des mesures sur les assemblages révèlent un comportement de l’adhésif plus complexe qu’attendu et une influence non négligeable du film de colle sur les distorsions. La dernière partie de ce travail de recherche se concentre donc sur la compréhension et l’étude approfondie du comportement de ce film de colle. Pour ce faire diverses analyses sont effectuées dont des instrumentations d’assemblages collés par fibres optiques à réseau de Bragg permettant de suivre les déformations in-situ tout au long de la cuisson.

Because of their specific properties, composite laminates made of carbon and thermosetting resins are very efficient materials for primary structural parts in aeronautics. However, during their cure, composite parts are subjected to several multi-physical phenomena, which may cause residual stresses and strains that will impact the final geometry of the part. Those variations of geometry are critical for parts of large dimensions and assemblies. Therefore, a simulation tool is needed to predict the cure strains. The work conducted during this Ph.D. is part of the MAESTRIA project of the CORAC supervised by the DGAC and is undertaken as a part of a strong partnership with Dassault Aviation. In this research work a special interest is given to co-bonded assemblies. The epoxy adhesive film used has its own behaviour and may have an influence on cure strains of assemblies. The…

Advisors/Committee Members: Olivier, Philippe (thesis director), Bernhart, Gérard (thesis director).

Subjects/Keywords: Distorsions de cuisson; Matériaux composites; Co-bonding; Colle époxy; Fabrication virtuelle; Cure distortions; Composite materials; Co-bonding; Epoxy adhesive; Virtual manufacturing; 620.19

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APA (6^th Edition):

Moretti, L. (2019). Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave. (Doctoral Dissertation). Ecole nationale des Mines d'Albi-Carmaux. Retrieved from http://www.theses.fr/2019EMAC0009

Chicago Manual of Style (16^th Edition):

Moretti, Laure. “Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave.” 2019. Doctoral Dissertation, Ecole nationale des Mines d'Albi-Carmaux. Accessed March 04, 2021. http://www.theses.fr/2019EMAC0009.

MLA Handbook (7^th Edition):

Moretti, Laure. “Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave.” 2019. Web. 04 Mar 2021.

Vancouver:

Moretti L. Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave. [Internet] [Doctoral dissertation]. Ecole nationale des Mines d'Albi-Carmaux; 2019. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2019EMAC0009.

Council of Science Editors:

Moretti L. Simulation des distorsions de cuisson de pièces composites élaborées par co-bonding en autoclave : Simulation of cure distortions of composite parts co-bonded in autoclave. [Doctoral Dissertation]. Ecole nationale des Mines d'Albi-Carmaux; 2019. Available from: http://www.theses.fr/2019EMAC0009

Edith Cowan University

24. Alghamedi, Ramzy. Luminescent solar concentrator structures for solar energy harvesting and radiation control.

Degree: 2017, Edith Cowan University

URL: https://ro.ecu.edu.au/theses/1965

► Luminescent solar concentrators are devices capable of converting some spectral components of solar radiation by luminescence and concentrating them before collection by photovoltaic. The aim… (more)

▼ Luminescent solar concentrators are devices capable of converting some spectral components of solar radiation by luminescence and concentrating them before collection by photovoltaic. The aim of this thesis is to design, develop and demonstrate the principle of all-inorganic semitransparent luminescent solar concentrator (LSC) structures capable of passing most of the visible light through to provide illumination, while reflecting more than 90% of the UV and IR radiations and scattering them to the edges of the glass where they are collected by PV cells to produce electricity. All-inorganic visibly-transparent energy-harvesting clear laminated glass windows are the most practical solution to boosting building-integrated photovoltaics (BIPV) energy outputs significantly while reducing cooling- and heatingrelated energy consumption in buildings. A typical semitransparent luminescent solar concentrator is based on the integration of micro-engineered optical structures, nano-materials and IR-selective thin-film coatings, to realise stable, long-lifetime and shatterproof clear glass panels. The ability of the proposed semitransparent luminescent solar concentrators to generate electricity addresses the future net-zero-energy building demand [1, 2], making them ideal candidates for future high-rise glass buildings. The developed semitransparent luminescent solar concentrators employ low-e thin films, which particularly, provide many benefits, including, (i) building overall aesthetic appearance, (ii) low glare and (iii) filtration of unwanted components of the incident sunlight thus increasing the energy saving rating of buildings. The low-e glass panes are typically used in a double glazing structure in order to protect the low-e film from environmental impacts and improve the insulation properties of the semitransparent luminescent solar concentrators in addition to reducing the energy consumed for cooling or heating the inside of buildings. Multi-layer thin film coatings for solar and thermal radiation control are designed, using the Optilayer software package, developed using Physical Vapour Deposition (PVD), and tested using spectrophotometry. Experimental results show that the measured transmittance spectra for the developed structures are in agreement with simulation results and demonstrate that with the use of optimum metal-dielectric layer combination it is possible to transmit/reflect arbitrary spectral components of the incident sunlight. In addition, two types of semitransparent luminescent solar concentrator structures are designed, developed and characterised, namely: 1. LSCs incorporating inorganic luminophore materials into the lamination interlayer. These luminophores, when used in conjunction with spectrally-selective low-e thin-film coatings and CuInSe2 solar cells, enable most of the visible solar radiation to be transmitted through the glass window with minimum attenuation and the ultraviolet (UV) radiation to be down-converted and routed together with a significant part of infrared radiation to the…

Subjects/Keywords: Renewable energy; building integrated photovoltaics; solar energy; solar cells; luminescent materials; optival materials; composite materials; thin films fabrication; diffraction grating; photobioreactor; Electrical and Computer Engineering; Materials Science and Engineering

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APA (6^th Edition):

Alghamedi, R. (2017). Luminescent solar concentrator structures for solar energy harvesting and radiation control. (Thesis). Edith Cowan University. Retrieved from https://ro.ecu.edu.au/theses/1965

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):

Alghamedi, Ramzy. “Luminescent solar concentrator structures for solar energy harvesting and radiation control.” 2017. Thesis, Edith Cowan University. Accessed March 04, 2021. https://ro.ecu.edu.au/theses/1965.

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

MLA Handbook (7^th Edition):

Alghamedi, Ramzy. “Luminescent solar concentrator structures for solar energy harvesting and radiation control.” 2017. Web. 04 Mar 2021.

Vancouver:

Alghamedi R. Luminescent solar concentrator structures for solar energy harvesting and radiation control. [Internet] [Thesis]. Edith Cowan University; 2017. [cited 2021 Mar 04]. Available from: https://ro.ecu.edu.au/theses/1965.

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

Council of Science Editors:

Alghamedi R. Luminescent solar concentrator structures for solar energy harvesting and radiation control. [Thesis]. Edith Cowan University; 2017. Available from: https://ro.ecu.edu.au/theses/1965

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

University of Arkansas

25. Newton, Benjamin Seth. Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells.

Degree: MS, 2011, University of Arkansas

URL: https://scholarworks.uark.edu/etd/163

► A material with the precise combination of amorphous silicon and polycrystalline silicon would be able to take advantage of the high absorption capabilities of… (more)

Subjects/Keywords: Applied sciences; Aluminum-induced crystallization; Amorphous silicon; Composite nanomaterial; Light trapping; Nanostructures; Polycrystalline silicon; Electronic Devices and Semiconductor Manufacturing; Nanotechnology Fabrication; Power and Energy

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APA (6^th Edition):

Newton, B. S. (2011). Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/163

Chicago Manual of Style (16^th Edition):

Newton, Benjamin Seth. “Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells.” 2011. Masters Thesis, University of Arkansas. Accessed March 04, 2021. https://scholarworks.uark.edu/etd/163.

MLA Handbook (7^th Edition):

Newton, Benjamin Seth. “Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells.” 2011. Web. 04 Mar 2021.

Vancouver:

Newton BS. Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells. [Internet] [Masters thesis]. University of Arkansas; 2011. [cited 2021 Mar 04]. Available from: https://scholarworks.uark.edu/etd/163.

Council of Science Editors:

Newton BS. Fabrication of Composite Nanomaterials For Thin Film Amorphous Silicon Solar Cells. [Masters Thesis]. University of Arkansas; 2011. Available from: https://scholarworks.uark.edu/etd/163

University of Arkansas

26. Decrossas, Emmanuel. High Frequency Characterization of Carbon Nanotube Networks for Device Applications.

Degree: PhD, 2012, University of Arkansas

URL: https://scholarworks.uark.edu/etd/374

► This work includes the microwave characterization of carbon nanotubes (CNTs) to design new CNTs-based high frequency components. A novel developed method to extract the… (more)

▼ This work includes the microwave characterization of carbon nanotubes (CNTs) to design new CNTs-based high frequency components. A novel developed method to extract the electrical properties over a broad microwave frequency band from 10 MHz to 50 GHz of carbon nanotubes (CNTs) in a powder form is performed. The measured scattering parameters (S-parameters) with a performance network analyzer are compared to the simulated one obtained from an in-house computed mode matching technique (MMT). An optimized first order gradient method iteratively changes the unknown complex permittivity parameters to map the simulated S-parameters with the measured one until convergence criteria are satisfied. The mode matching technique accurately describes waveguide discontinuities as both propagating and evanescent modes are considered allowing an error less than 5% on the extracted permittivity over a broad frequency range. The very large values obtained at low frequencies of carbon nanotubes permittivity are explained theoretically and experimentally based on the percolation theory. The powder composed of semiconducting and conducting CNTs illuminated by an electromagnetic field is seen as series of nano-resistance-capacitance which significantly increase the real and imaginary parts of the complex effective permittivity until the percolation threshold is reached. Based on experimental results different CNTs-based composites material are engineered to design novel microwave components for possible electromagnetic compatibility (EMC) applications. As the extraordinary properties of the carbon nanotubes exist along their axis, the second part of this work is oriented on the alignment and the deposition of carbon nanotubes using a dielectrophoresis (DEP) technique. Micro/nano-electrodes are fabricated using a lift-off process consisting of photo-lithography and electron-beam lithography techniques where the carbon nanotubes suspended in an aqueous solution are attracted in the gap between the electrodes by applying an AC bias voltage. After burning the conducting carbon nanotubes an observed photocurrent with aligned semiconducting CNTs is used to develop high frequency photo-device prototypes. Advisors/Committee Members: Samir M. El-Ghazaly, Victor Fouad Hanna, Hameed A. Naseem.

Subjects/Keywords: Pure sciences; Applied sciences; Carbon nanotubes; Composite material; Dielectrophoresis; Microwave characterization; Mode matching technique; Nano-particles; Electromagnetics and Photonics; Nanoscience and Nanotechnology; Nanotechnology Fabrication

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APA (6^th Edition):

Decrossas, E. (2012). High Frequency Characterization of Carbon Nanotube Networks for Device Applications. (Doctoral Dissertation). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/374

Chicago Manual of Style (16^th Edition):

Decrossas, Emmanuel. “High Frequency Characterization of Carbon Nanotube Networks for Device Applications.” 2012. Doctoral Dissertation, University of Arkansas. Accessed March 04, 2021. https://scholarworks.uark.edu/etd/374.

MLA Handbook (7^th Edition):

Decrossas, Emmanuel. “High Frequency Characterization of Carbon Nanotube Networks for Device Applications.” 2012. Web. 04 Mar 2021.

Vancouver:

Decrossas E. High Frequency Characterization of Carbon Nanotube Networks for Device Applications. [Internet] [Doctoral dissertation]. University of Arkansas; 2012. [cited 2021 Mar 04]. Available from: https://scholarworks.uark.edu/etd/374.

Council of Science Editors:

Decrossas E. High Frequency Characterization of Carbon Nanotube Networks for Device Applications. [Doctoral Dissertation]. University of Arkansas; 2012. Available from: https://scholarworks.uark.edu/etd/374

Ohio University

27. Tkach, Suzanne G. Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication.

Degree: MS, Mechanical Engineering (Engineering), 1997, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1184345240

Experimental Determination of Heat Transfer Through Metal Foils and Ceramic Fiber Mats During Composite Fabrication Advisors/Committee Members: Alam, M. (Advisor).

Subjects/Keywords: Engineering, Mechanical; Heat Transfer; Metal Foils; Ceramic Fiber Mats; Composite Fabrication

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APA (6^th Edition):

Tkach, S. G. (1997). Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1184345240

Chicago Manual of Style (16^th Edition):

Tkach, Suzanne G. “Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication.” 1997. Masters Thesis, Ohio University. Accessed March 04, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1184345240.

MLA Handbook (7^th Edition):

Tkach, Suzanne G. “Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication.” 1997. Web. 04 Mar 2021.

Vancouver:

Tkach SG. Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication. [Internet] [Masters thesis]. Ohio University; 1997. [cited 2021 Mar 04]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1184345240.

Council of Science Editors:

Tkach SG. Experimental determination of heat transfer through metal foils and ceramic fiber mats during composite fabrication. [Masters Thesis]. Ohio University; 1997. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1184345240

Université de Grenoble

28. Charbonneau, Micaël. Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures.

Degree: Docteur es, Nanoélectronique et nanotechnologie, 2012, Université de Grenoble

URL: http://www.theses.fr/2012GRENT116

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Ces dix dernières années, les technologies de stockage non-volatile Flash ont joué un rôle majeur dans le développement des appareils électroniques mobiles et multimedia (MP3,… (more)

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Ces dix dernières années, les technologies de stockage non-volatile Flash ont joué un rôle majeur dans le développement des appareils électroniques mobiles et multimedia (MP3, Smartphone, clés USB, ordinateurs ultraportables…). Afin d’améliorer davantage les performances, augmenter les capacités et diminuer les coûts de fabrication, de nouvelles solutions technologiques sont aujourd’hui étudiées pour pouvoir compléter ou remplacer la technologie Flash. Citées par l’ITRS, les mémoires résistives polymères présentent des caractéristiques très prometteuses : procédés de fabrication à faible coût et possibilité d’intégration haute densité au dessus des niveaux d’interconnexions CMOS ou sur substrat souple. Ce travail de thèse a été consacré au développement et à l'étude des mémoires résistifs organiques à base de polymère de poly-méthyl-méthacrylate (PMMA) et de molécules de fullerènes (C60). Trois axes de recherche ont été menés en parallèle: le développement et la caractérisation physico-chimique de matériaux composites, l’intégration du matériau organique dans des structures de test spécifiques et la caractérisation détaillée du fonctionnement électrique des dispositifs et des performances mémoires.

Over the past decade, non-volatile Flash storage technologies have played a major role in the development of mobile electronics and multimedia (MP3, Smartphone, USB, ultraportable computers ...). To further enhance performances, increase the capacity and reduce manufacturing costs, new technological solutions are now studied to provide complementary solutions or replace Flash technology. Cited by ITRS, the polymer resistive memories present very promising characteristics: low cost processing and ability for integration at high densities above CMOS interconnections or on flexible substrate. This PhD specifically focused on the development and study of composite material made of Poly-Methyl-Methacrylate (PMMA) polymer resist doped with C60 fullerene molecules. Studies were carried out on three different axes in parallel: Composite materials development & characterization, integration of the organic material in specific test structure and advanced devices and finally detailed electrical characterization of memory cells and performances analysis.

Advisors/Committee Members: Ghibaudo, Gérard (thesis director).

Subjects/Keywords: Microélectronique; Mémoires Non-Volatiles; Mémoire Résistive; Electronique organique; Architecture Crossbar; PMMA; Fullerène; Nano-composites; Caractérisation physico-chimique des composites organiques; Fabrication de dispositifs; Intégration CMOS; MIS; MIM; Caractérisation électrique; Analyse de performances Mémoire; Microelectronic; Non-volatile Memories; Resistive Memory; Organic electronic; Crossbar architecture; PMMA; Fullerene; Nano-composite; Physical and chemical characterization of organic composite; Device fabrication; CMOS Integration; MIS; MIM; Electrical Characterization; Memory Performance Analysis; 620

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APA (6^th Edition):

Charbonneau, M. (2012). Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2012GRENT116

Chicago Manual of Style (16^th Edition):

Charbonneau, Micaël. “Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures.” 2012. Doctoral Dissertation, Université de Grenoble. Accessed March 04, 2021. http://www.theses.fr/2012GRENT116.

MLA Handbook (7^th Edition):

Charbonneau, Micaël. “Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures.” 2012. Web. 04 Mar 2021.

Vancouver:

Charbonneau M. Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures. [Internet] [Doctoral dissertation]. Université de Grenoble; 2012. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2012GRENT116.

Council of Science Editors:

Charbonneau M. Etude et développement de points mémoires résistifs polymères pour les architectures Cross-Bar : Development and Study of Organic Polymer Resistive Memories For Crossbar Architectures. [Doctoral Dissertation]. Université de Grenoble; 2012. Available from: http://www.theses.fr/2012GRENT116

Indian Institute of Science

29. Gupta, Satyajit. Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics.

Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3408

► The ultra high barrier films for packaging find applications in a wide variety of areas where moisture and oxygen barrier is required for improved shelf-life… (more)

▼ The ultra high barrier films for packaging find applications in a wide variety of areas where moisture and oxygen barrier is required for improved shelf-life of food/beverage products and for microbial free pharmaceutical containers. These materials also find applications in micro electro mechanical systems such as ICs, and for packaging in industrial and space electronics. Flexible and portable organic electronics like OLEDs (Organic Light Emitting Diodes), OPVDs (Organic Photo Voltaic Devices) and dye sensitized solar cells (DSSCs) have a good potential in next generation solar powered devices. In fact, organic insulators, semiconductors, and metals may be a large part of the future of electronics. However, these classes of materials are just an emerging class of materials mainly because of their life time constraints. Thus significant research is required to bring them into the forefront of electronic applications. If the degradation problems can be diminished, then these polymers could play a major role in the worldwide electronic industry. A flexible polymer film itself cannot be used as an encapsulation material owing to its high permeability. While a glass or metal substrate possesses ultra high barrier properties, it cannot be used in many electronic applications due to its brittleness and inflexibility. Polymer/ nanocomposites based hybrid materials are thus a promising class of material that can be used for device encapsulation. Chapter I summarizes some of the recent developments in the polymer/nanocomposites based materials for packaging and specifically its use in flexible as well as portable organic electronic device encapsulation. While the development of low permeable encapsulant materials is a chemistry problem, an engineering/instrumentation problem is the development of an accurate technique that can measure the low levels of permeability required for electronic application. Therefore, there is a keen interest in the development of an instrument to measure permeability at these limits. The existing techniques to measure the low permeabilities of barrier films, their importance and accuracy of measurements obtained by these instruments have been briefly discussed in this chapter. Different polymer based hybrid composite materials have been developed for the encapsulation of organic devices and their materials properties have been evaluated. Broadly, two diverse strategies have been used for the fabrication of the composites: in-situ curing and solution casting. Chapters II, III and IV discuss the fabrication of nanocomposite films based on in-situ curing while chapter V discusses fabrication based on solution casting. In chapter II, amine functionalized alumina was used as a cross-linking agent and reinforcing material for the polymer matrix in order to fabricate the composites to be used for encapsulation of devices. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were used to elucidate the surface chemistry.… Advisors/Committee Members: Ramamurthy, Praveen C (advisor).

Subjects/Keywords: Organic Electronics; Hybrid Organic Nanoomposites; Hybrid Inorganic Nanocomposites; Polymer Nanocomposites; Organic Electronic Device Encapsulation; Polymer Nanocomposite Films - Fabrication; Encapsulation - Organic Electronic Devices; Silicon Polymer Composites; Nanocomposite Films; Sillica Composites; Polymer Nanocomposite Hybrid Materials; Barrier Materials - Organic Electronics; Alumina Nanoparticles; Hybrid Composite Films; Hybrid Nanocomposite Films; Hybrid Polymer Composite Films; Materials Science

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APA (6^th Edition):

Gupta, S. (2018). Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3408

Chicago Manual of Style (16^th Edition):

Gupta, Satyajit. “Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed March 04, 2021. http://etd.iisc.ac.in/handle/2005/3408.

MLA Handbook (7^th Edition):

Gupta, Satyajit. “Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics.” 2018. Web. 04 Mar 2021.

Vancouver:

Gupta S. Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Mar 04]. Available from: http://etd.iisc.ac.in/handle/2005/3408.

Council of Science Editors:

Gupta S. Development of Hybrid Organic/Inorganic Composites as a Barrier Material for Organic Electronics. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3408

Sardar Patel University

30. Patel, Yogeshkumar Shantilal. Studies on polymers derived from pyromellitic dianhydride.

Degree: Chemistry, 2013, Sardar Patel University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/34624

none newline

Reference given in the end of each chapter.

Advisors/Committee Members: Patel, H S.

Subjects/Keywords: antimicrobial; bisligands; composite fabrication; dianhydride; Elemental analysis; monomer; polymers; pyromellitic; Spectral analysis; Thermogravimetric analysis

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APA (6^th Edition):

Patel, Y. S. (2013). Studies on polymers derived from pyromellitic dianhydride. (Thesis). Sardar Patel University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/34624

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):

Patel, Yogeshkumar Shantilal. “Studies on polymers derived from pyromellitic dianhydride.” 2013. Thesis, Sardar Patel University. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/34624.

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

MLA Handbook (7^th Edition):

Patel, Yogeshkumar Shantilal. “Studies on polymers derived from pyromellitic dianhydride.” 2013. Web. 04 Mar 2021.

Vancouver:

Patel YS. Studies on polymers derived from pyromellitic dianhydride. [Internet] [Thesis]. Sardar Patel University; 2013. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34624.

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

Council of Science Editors:

Patel YS. Studies on polymers derived from pyromellitic dianhydride. [Thesis]. Sardar Patel University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/34624

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

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Open Access Theses and Dissertations