subject:(Composites)

1. McLendon, Wesley R. A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66685

► This work examines composite failure at multiple scales. The ???rst scale that is examined is the ???ber-matrix scale, where ???bers and matrix are discretely modeled.… (more)

▼ This work examines composite failure at multiple scales. The ???rst scale that is examined is the ???ber-matrix scale, where ???bers and matrix are discretely modeled. A model is developed at this scale which includes randomness in the ???ber positions. This randomness is found to signi???cantly in???uence the stress ???eld and resulting failure that occurs under thermo mechanical loads as compared to ???ber-matrix microstructures with regular arrays of ???bers. The ???ber-matrix model is utilized to characterize variability and temperature dependence of the composite strength arising from microstructural randomness and the presence of thermally induced stresses. The second scale that is examined is that of a textile unit cell. Failure initiation behavior is examined for a variety of thermo mechanical loadings at this scale, and it is found that failure tends to initiate in a limited number of ways for a wide variety of loadings. A new progressive failure model is then examined for the textile unit cell. This model utilizes cohesive interface elements in the tows, neat matrix pockets, and tow and matrix interfaces to account for crack opening in the textile, as well as a continuum damage model to account for di???use damage in the tows. Variability and temperature dependence of the transverse tow strength is introduced by specifying varying cohesive strengths in the intra-tow cohesive zones using a Weibull distribution characterized using the random ???ber-matrix model. Progressive failure analyses are then performed for the textile unit cell under a variety of thermomechanical loads, and the resulting behaviors are compared to identify characteristic modes of damage development and their e???ect on the textile response. A continuum damage model for the textile material, which can be applied to engineering structures, is developed based on the characteristic damage modes observed in the textile unit cell analyses. This model tracks the evolution of each characteristic mode of damage based on the structural-scale stress and predicts the degradation in the textile response as a result of this damage. The ability of this model to predict the textile???s response under various damage-inducing loads is then compared to the response obtained from textile unit cell progressive failure analysis, and both models are found to be in good agreement for most loadings. Advisors/Committee Members: Whitcomb, John D (advisor).

Subjects/Keywords: Composites

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APA (6^th Edition):

McLendon, W. R. (2013). A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66685

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):

McLendon, Wesley R. “A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads.” 2013. Thesis, Texas Digital Library. Accessed February 26, 2020. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66685.

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

MLA Handbook (7^th Edition):

McLendon, Wesley R. “A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads.” 2013. Web. 26 Feb 2020.

Vancouver:

McLendon WR. A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66685.

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

Council of Science Editors:

McLendon WR. A Multiscale Framework for the Characterization of Damage in Textile Composites Under Thermomechanical Loads. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66685

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

2. Vasudevan, Sugeetha. Investigations on mechanical property -microstructure correlations in CMC Coatings.

Degree: PhD, Materials Science, 2016, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:674151/

► Abstract of “Investigations on mechanical property - microstructure correlations in CMC Coatings” by Sugeetha Vasudevan, Ph.D., Brown University, May 2016 Carbon nanotubes (CNTs) are being… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Vasudevan, S. (2016). Investigations on mechanical property -microstructure correlations in CMC Coatings. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:674151/

Chicago Manual of Style (16^th Edition):

Vasudevan, Sugeetha. “Investigations on mechanical property -microstructure correlations in CMC Coatings.” 2016. Doctoral Dissertation, Brown University. Accessed February 26, 2020. https://repository.library.brown.edu/studio/item/bdr:674151/.

MLA Handbook (7^th Edition):

Vasudevan, Sugeetha. “Investigations on mechanical property -microstructure correlations in CMC Coatings.” 2016. Web. 26 Feb 2020.

Vancouver:

Vasudevan S. Investigations on mechanical property -microstructure correlations in CMC Coatings. [Internet] [Doctoral dissertation]. Brown University; 2016. [cited 2020 Feb 26]. Available from: https://repository.library.brown.edu/studio/item/bdr:674151/.

Council of Science Editors:

Vasudevan S. Investigations on mechanical property -microstructure correlations in CMC Coatings. [Doctoral Dissertation]. Brown University; 2016. Available from: https://repository.library.brown.edu/studio/item/bdr:674151/

University of Ottawa

3. Badripour, Yousef. Characterization of Fibre Reinforcements for Non-structural Composite Parts .

Degree: 2018, University of Ottawa

URL: http://hdl.handle.net/10393/38430

► Fibre reinforced composite materials have attracted attention from industry and academia due to their high specific stiffness and strength. Commonly used manufacturing processes include the… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Badripour, Y. (2018). Characterization of Fibre Reinforcements for Non-structural Composite Parts . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/38430

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):

Badripour, Yousef. “Characterization of Fibre Reinforcements for Non-structural Composite Parts .” 2018. Thesis, University of Ottawa. Accessed February 26, 2020. http://hdl.handle.net/10393/38430.

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

MLA Handbook (7^th Edition):

Badripour, Yousef. “Characterization of Fibre Reinforcements for Non-structural Composite Parts .” 2018. Web. 26 Feb 2020.

Vancouver:

Badripour Y. Characterization of Fibre Reinforcements for Non-structural Composite Parts . [Internet] [Thesis]. University of Ottawa; 2018. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/10393/38430.

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

Council of Science Editors:

Badripour Y. Characterization of Fibre Reinforcements for Non-structural Composite Parts . [Thesis]. University of Ottawa; 2018. Available from: http://hdl.handle.net/10393/38430

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

Oklahoma State University

4. Cyriac, Ajith James. Metal Matrix Composites: History, Status, Factors and Future.

Degree: Mechanical & Aerospace Engineering, 2011, Oklahoma State University

URL: http://hdl.handle.net/11244/9914

► The history, status, and future of metal matrix composites are presented by evaluating the progression of available literature through time. The trends that existed and… (more)

Subjects/Keywords: ceramics; composites; metal matrix composites

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APA (6^th Edition):

Cyriac, A. J. (2011). Metal Matrix Composites: History, Status, Factors and Future. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/9914

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):

Cyriac, Ajith James. “Metal Matrix Composites: History, Status, Factors and Future.” 2011. Thesis, Oklahoma State University. Accessed February 26, 2020. http://hdl.handle.net/11244/9914.

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

MLA Handbook (7^th Edition):

Cyriac, Ajith James. “Metal Matrix Composites: History, Status, Factors and Future.” 2011. Web. 26 Feb 2020.

Vancouver:

Cyriac AJ. Metal Matrix Composites: History, Status, Factors and Future. [Internet] [Thesis]. Oklahoma State University; 2011. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11244/9914.

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

Council of Science Editors:

Cyriac AJ. Metal Matrix Composites: History, Status, Factors and Future. [Thesis]. Oklahoma State University; 2011. Available from: http://hdl.handle.net/11244/9914

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

5. Miriyala, Sethu M. Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1566

► The electrical and mechanical behavior of carbon black filled poly(vinyl acetate) latex-based and solution-based polymer composites was examined. A set of experiments were performed to… (more)

▼ The electrical and mechanical behavior of carbon black filled poly(vinyl acetate) latex-based and solution-based polymer composites was examined. A set of experiments were performed to distinguish composites with a segregated network (emulsion-based) from those with random dispersion (solution-based) of the filler. The percolation thresholds for the emulsion-based composites were near 1.2 vol% carbon black, while the solution-based composites were around 8.2 vol% carbon black. This difference is due to the segregated network formation, which leads to excluded volume effects in emulsion-based systems. This excluded volume created by the solid polymer particles forces the carbon black particles into conductive pathways at low concentration. In the solution-based case, fully solvated polymer results in a random dispersion of carbon black. The segregated network composite also shows significant improvement in both electrical conductivity and storage modulus with low carbon black loading, while the solution-based composite achieves significant property enhancements at higher carbon black loading because of the greater percolation threshold. The effect of clay in both emulsion and solution-based composites with carbon black was also studied by preparing composites with three clay concentrations (0.2, 0.4 and 2 wt%). In emulsion-based composites, low clay concentration reduced the percolation threshold from 1.2 vol% to 0.8 vol% carbon black, but with solution-based composites clay increased the percolation threshold from 8.2 vol% to 11.7 vol% carbon black. It is assumed that clay helps to force the carbon black particles into the conductive pathways in the emulsion-based composites. In solution-base composites, clay improves the dispersion of carbon black, thereby destroying the carbon black network and reducing conductivity and storage modulus. The storage modulus in emulsion-based composites improved with 0.2 wt% clay but greater clay concentration resulted in a drop in modulus due to porosity from excess excluded volume effects. Advisors/Committee Members: GRUNLAN, JAIME C. (advisor), BALBUENA, PERLA (committee member), ZHANG, XINGHANG (committee member).

Subjects/Keywords: composites

…a typical clay (a) and common types of clay composites formed (b)… …solution-based composites (b) containing 2.5 vol% carbon black… …11 7 Freeze-fractured cross-sections of PVAc/CB latex-based composites containing 2.5… …16 8 Freeze-fractured cross-sections of PVAc/CB solution-based composites containing 2.5… …PVAc solution and emulsion-based composites.......................... 23 x FIGURE Page…

10 more images…

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APA (6^th Edition):

Miriyala, S. M. (2009). Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1566

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):

Miriyala, Sethu M. “Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.” 2009. Thesis, Texas A&M University. Accessed February 26, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-1566.

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

MLA Handbook (7^th Edition):

Miriyala, Sethu M. “Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.” 2009. Web. 26 Feb 2020.

Vancouver:

Miriyala SM. Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1566.

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

Council of Science Editors:

Miriyala SM. Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1566

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

Montana State University

6. Henslee, Isaac Andrew. Macrofiber piezoelectric composite for lunar exploration actuator.

Degree: College of Engineering, 2010, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/1462

► Understanding the nature and location of water and other resources on Earth's Moon is an essential component to the National Aeronautics and Space Administration's (NASA)… (more)

▼ Understanding the nature and location of water and other resources on Earth's Moon is an essential component to the National Aeronautics and Space Administration's (NASA) space exploration efforts. To aid in these exploration efforts, an investigation into lightweight and reliable materials for a lunar valve actuator design has lead to characterizing the lifetime performance of the piezoelectric fiber composite, macro fiber composite (MFC). MFC's are thin rectangular patches made of polyimide film, epoxy and a single layer of rectangular lead zirconium titanate fibers and are commercially available. As a basis for this consideration, the useful life of the MFC is being characterized to determine the effect of temperature on the performance of the material as it is fatigued by cyclical piezoelectric excitation or actuation. The test specimen consist of the MFC laminated to a cantilevered stainless steel beam using epoxy and is actuated at the first resonant frequency of the beam laminate by the cyclic application of 1000 volts. Strain and beam tip displacement measurements are used as a basis for determining the performance of the MFC as it is cyclically actuated under various operating temperatures. The temperature of the beam laminate is held constant during cyclic actuation and cycled to failure or 250 million cycles, to determine the useful life of the MFC over a temperature range from -15°C to 145°C. The results of the experimentation efforts show a strong temperature dependence on operational life for the MFC. No significant degradation in operational performance was identified thru monitoring of the MFC, as the MFC was cyclically actuated up to the point of failure, regardless of temperature or actuation cycle. The results of the experimental testing can be used to better inform designs, such as actuators, using MFC in environments where operational temperatures differ from standard laboratory temperatures, as well as, to better design temperature controlled environments where MFC's are used as actuators. Advisors/Committee Members: Chairperson, Graduate Committee: David A. Miller. (advisor).

Subjects/Keywords: Fibrous composites.

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APA (6^th Edition):

Henslee, I. A. (2010). Macrofiber piezoelectric composite for lunar exploration actuator. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/1462

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):

Henslee, Isaac Andrew. “Macrofiber piezoelectric composite for lunar exploration actuator.” 2010. Thesis, Montana State University. Accessed February 26, 2020. https://scholarworks.montana.edu/xmlui/handle/1/1462.

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

MLA Handbook (7^th Edition):

Henslee, Isaac Andrew. “Macrofiber piezoelectric composite for lunar exploration actuator.” 2010. Web. 26 Feb 2020.

Vancouver:

Henslee IA. Macrofiber piezoelectric composite for lunar exploration actuator. [Internet] [Thesis]. Montana State University; 2010. [cited 2020 Feb 26]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1462.

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

Council of Science Editors:

Henslee IA. Macrofiber piezoelectric composite for lunar exploration actuator. [Thesis]. Montana State University; 2010. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1462

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

University of Manchester

7. Dhiman, Sarvesh Singh. Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300684a

► Composite structures are being increasingly used in a wide range of industries due to their high stiffness and strength to weight ratios compared to traditional… (more)

Subjects/Keywords: Composites; FEA

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APA (6^th Edition):

Dhiman, S. S. (2016). Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300684a

Chicago Manual of Style (16^th Edition):

Dhiman, Sarvesh Singh. “Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites.” 2016. Doctoral Dissertation, University of Manchester. Accessed February 26, 2020. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300684a.

MLA Handbook (7^th Edition):

Dhiman, Sarvesh Singh. “Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites.” 2016. Web. 26 Feb 2020.

Vancouver:

Dhiman SS. Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2020 Feb 26]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300684a.

Council of Science Editors:

Dhiman SS. Effect of Number of Layers and Binder Tow Size on Mechanical Properties of 3D Woven Composites. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:300684a

University of Manchester

8. Cui, Zhengxing. A study of doubly crosslinked microgels and their composites.

Degree: 2017, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308151

► This thesis presents a study of pH-responsive doubly crosslinked microgels (DX MGs) and associated investigations to enhance their performance. The potential application of this material… (more)

▼ This thesis presents a study of pH-responsive doubly crosslinked microgels (DX MGs) and associated investigations to enhance their performance. The potential application of this material is soft tissue engineering, so the research concerns mechanical properties, other properties like swelling, microporous and conductivity are also discussed. The MG particles are based on poly(EA/MAA/x), where EA is the ethyl acrylate, MAA is the methacrylate acid and x represents the crosslinker. The particles were subsequently functionalised using glycidyl methacrylate (GMA) to introduce vinyl groups in the MG particles. The formation of DX MGs includes a pH triggered swelling of MG particles in the dispersion to form a physical gel and a heat-triggered free-radical reaction to form a covalent hydrogel. The starting point of this study was using graphene oxide (GO) nanosheets to prepare DX MGs composites with a high modulus. We mixed low concentrations of GO with MG particles and formed DX MG/GO gels. Both shear and compressive modulus linearly increased with the concentration of GO, but the ductility of gels was slightly reduced. The moduli for the DX MG/GO gels was increased by a factor of 5 - 6 when only 1.0 wt.% of GO was included.The next study used muti-wall carbon nanotubes (CNTs) which are widely used to prepare electrical conductive composites. A big challenge for applying CNTs is that they easily form large aggregates in water, which was solved by the space-filling and volume excluded properties of MG particles. The ductility of the composite DX gels increased with CNT concentration, as did the modulus. The conductivity of gels significantly increased with the concentration of CNT and they had a very low percolation threshold. The cytotoxic study for the composite gels showed that they were not toxic, so they may be suitable for soft tissue engineering.The effect of crosslinking monomers in MG preparation was studied in the last part of the research. Three types of poly(EA/MAA/x) MGs were studied and compared. The x value was 1 mol. % of divinylbenzene (DVB); 1,4-butanediol diacrylate (BDDA) or a 1:1 mixture of both DVB and BDDA. The MGs containing DVB demonstrated higher swelling and more ductile properties and could withstand ~76% of compressive deformation. Moreover, the effects of intra-MG crosslinking of the MGs on the swelling behaviour and the mechanical properties were investigated. Advisors/Committee Members: KINLOCH, IAN IA, Saunders, Brian, Kinloch, Ian.

Subjects/Keywords: microgels; composites

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APA (6^th Edition):

Cui, Z. (2017). A study of doubly crosslinked microgels and their composites. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308151

Chicago Manual of Style (16^th Edition):

Cui, Zhengxing. “A study of doubly crosslinked microgels and their composites.” 2017. Doctoral Dissertation, University of Manchester. Accessed February 26, 2020. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308151.

MLA Handbook (7^th Edition):

Cui, Zhengxing. “A study of doubly crosslinked microgels and their composites.” 2017. Web. 26 Feb 2020.

Vancouver:

Cui Z. A study of doubly crosslinked microgels and their composites. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2020 Feb 26]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308151.

Council of Science Editors:

Cui Z. A study of doubly crosslinked microgels and their composites. [Doctoral Dissertation]. University of Manchester; 2017. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:308151

Université de Sherbrooke

9. Mighri, Frej. Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C .

Degree: 1989, Université de Sherbrooke

URL: http://hdl.handle.net/11143/16277

► Le présent travail traite du comportement viscoélastique à long terme d'un composite carbone/époxyde-bismaléimide (IM6/5245C). Il s'agit dans un premier temps d'une étude théorique sur le… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Mighri, F. (1989). Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/16277

Chicago Manual of Style (16^th Edition):

Mighri, Frej. “Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C .” 1989. Masters Thesis, Université de Sherbrooke. Accessed February 26, 2020. http://hdl.handle.net/11143/16277.

MLA Handbook (7^th Edition):

Mighri, Frej. “Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C .” 1989. Web. 26 Feb 2020.

Vancouver:

Mighri F. Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C . [Internet] [Masters thesis]. Université de Sherbrooke; 1989. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11143/16277.

Council of Science Editors:

Mighri F. Étude du comportement viscoélastique d'un composite carbon/époxyde-bismaléimide "IM6/5245C . [Masters Thesis]. Université de Sherbrooke; 1989. Available from: http://hdl.handle.net/11143/16277

Université de Sherbrooke

10. Labossière, Pierre. Analyse par éléments finis de plaques de matériaux composites .

Degree: 1983, Université de Sherbrooke

URL: http://hdl.handle.net/11143/14523

► Nous étudions dans ce travail le comportement de matériaux composites contenant un défaut interne, lorsqu'ils sont soumis à des charges axiales. Les matériaux étudiés sont… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Labossière, P. (1983). Analyse par éléments finis de plaques de matériaux composites . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/14523

Chicago Manual of Style (16^th Edition):

Labossière, Pierre. “Analyse par éléments finis de plaques de matériaux composites .” 1983. Masters Thesis, Université de Sherbrooke. Accessed February 26, 2020. http://hdl.handle.net/11143/14523.

MLA Handbook (7^th Edition):

Labossière, Pierre. “Analyse par éléments finis de plaques de matériaux composites .” 1983. Web. 26 Feb 2020.

Vancouver:

Labossière P. Analyse par éléments finis de plaques de matériaux composites . [Internet] [Masters thesis]. Université de Sherbrooke; 1983. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11143/14523.

Council of Science Editors:

Labossière P. Analyse par éléments finis de plaques de matériaux composites . [Masters Thesis]. Université de Sherbrooke; 1983. Available from: http://hdl.handle.net/11143/14523

Université de Sherbrooke

11. Neglo, Kouma. Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire .

Degree: 1983, Université de Sherbrooke

URL: http://hdl.handle.net/11143/14534

► La loi de comportement des matériaux orthotropes (transversalement isotropes) est utilisée conjointement avec l'élément prismatique linéaire pour mettre au point un programme d'éléments finis en… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Neglo, K. (1983). Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/14534

Chicago Manual of Style (16^th Edition):

Neglo, Kouma. “Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire .” 1983. Masters Thesis, Université de Sherbrooke. Accessed February 26, 2020. http://hdl.handle.net/11143/14534.

MLA Handbook (7^th Edition):

Neglo, Kouma. “Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire .” 1983. Web. 26 Feb 2020.

Vancouver:

Neglo K. Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire . [Internet] [Masters thesis]. Université de Sherbrooke; 1983. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11143/14534.

Council of Science Editors:

Neglo K. Analyse par éléments finis de l'endommagement des plaques de matériaux composites ayant un trou central circulaire . [Masters Thesis]. Université de Sherbrooke; 1983. Available from: http://hdl.handle.net/11143/14534

University of Waterloo

12. Ganesarajan, Dinesha. Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15434

► In recent years, the automotive industry has undergone severe changes that challenges their conventional methods of mass vehicle production. This is due to many factors… (more)

▼ In recent years, the automotive industry has undergone severe changes that challenges their conventional methods of mass vehicle production. This is due to many factors that include legislation that demand for increase in fuel economy and public sentiment for environmental sustainability. Therefore, one of the most prominent solutions to combat the factors mentioned above is to rethink material utilization in automobiles. The purpose of this thesis is to reduce the material weight and increase the environmental sustainability of polypropylene composites for body interior and under-the-hood applications, specifically replacing inorganic sources with naturally, biodegradable filler materials. Two polysaccharide morphologies were explored in this study which includes DuPont’s Nuvolve™ (micro-polysaccharide) and nanocellulose. The natural fillers were incorporated with glass fiber in a polypropylene matrix to yield hybrid composites. The polysaccharide & glass fiber loadings were varied with the total filler concentration not exceeding 30 wt.%. Subsequently mechanical, thermal, rheological and morphological properties were evaluated and compared to Ford Motor Company’s material specification for body interior and under-the-hood applications. The composites were prepared through twin screw extrusion and injection molding where a universal testing machine was used to assess the mechanical properties. Thermal properties were analyzed using thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Melt rheology was evaluated using a parallel-plate controlled strained rheometer. Scanning electron microscope (SEM) was used to study the filler-matrix interface of the hybrid composites. The results showed that for the micro-polysaccharide (Nuvolve™) hybrid composites a density reduction of up to 13% was achievable with improvements to tensile strength and impact strength compared to Ford Motor Company’s material specification. The addition of Nuvolve™ negatively affected the thermal stability of the composites due to the low thermal stability of the polysaccharide. Additionally, the analysis of the thermal transitions of the composites showed that the Nuvolve™ did not have a nucleating effect to enhance crystallization which in turn improves part-production. SEM images showed good filler distribution of Nuvolve™. Nuvolve™ revealed areas of poor dispersion seen as agglomeration up to 100µm; which can lead to poor transfer of stress between filler and the polymer matrix. Glass fibers were also well distributed in the polypropylene matrix with typical fracture mechanisms present such as fiber-pull out. Nanocellulose reinforced hybrid composites showed a greater density reduction above 15% compared to Ford Motor Company’s material specification. The optimal performing composite contained 2.5 wt.% of nanocellulose and 10 wt.% of glass fiber yielding a total filler content of only 12.5 wt.%. The mechanical properties of the optimal formulation agreed with most of the material specification outlined by…

Subjects/Keywords: composites; sustainability

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APA (6^th Edition):

Ganesarajan, D. (2020). Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15434

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):

Ganesarajan, Dinesha. “Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications.” 2020. Thesis, University of Waterloo. Accessed February 26, 2020. http://hdl.handle.net/10012/15434.

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

MLA Handbook (7^th Edition):

Ganesarajan, Dinesha. “Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications.” 2020. Web. 26 Feb 2020.

Vancouver:

Ganesarajan D. Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/10012/15434.

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

Council of Science Editors:

Ganesarajan D. Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15434

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

University of Oklahoma

13. Grace, Landon. Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model.

Degree: PhD, 2012, University of Oklahoma

URL: http://hdl.handle.net/11244/319198

► The three-dimensional anisotropic moisture absorption behavior of a quartz-fiber-reinforced bismaleimide (BMI) laminate is investigated by collecting 21 months of experimental gravimetric data. Laminates of six,… (more)

Subjects/Keywords: Polymeric composites

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APA (6^th Edition):

Grace, L. (2012). Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/319198

Chicago Manual of Style (16^th Edition):

Grace, Landon. “Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model.” 2012. Doctoral Dissertation, University of Oklahoma. Accessed February 26, 2020. http://hdl.handle.net/11244/319198.

MLA Handbook (7^th Edition):

Grace, Landon. “Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model.” 2012. Web. 26 Feb 2020.

Vancouver:

Grace L. Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model. [Internet] [Doctoral dissertation]. University of Oklahoma; 2012. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11244/319198.

Council of Science Editors:

Grace L. Non-Fickian Three-Dimensional Moisture Absorption in Polymeric Composites: Development and Validation of Hindered Diffusion Model. [Doctoral Dissertation]. University of Oklahoma; 2012. Available from: http://hdl.handle.net/11244/319198

Université de Sherbrooke

14. Roberge, Judith. Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique .

Degree: 1988, Université de Sherbrooke

URL: http://hdl.handle.net/11143/15642

► Cette étude a pour but d'identifier la nature et le moment d'apparition des modes de rupture des matériaux composites carbone-époxyde sollicités en compression statique et… (more)

Subjects/Keywords: Composites

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APA (6^th Edition):

Roberge, J. (1988). Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/15642

Chicago Manual of Style (16^th Edition):

Roberge, Judith. “Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique .” 1988. Masters Thesis, Université de Sherbrooke. Accessed February 26, 2020. http://hdl.handle.net/11143/15642.

MLA Handbook (7^th Edition):

Roberge, Judith. “Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique .” 1988. Web. 26 Feb 2020.

Vancouver:

Roberge J. Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique . [Internet] [Masters thesis]. Université de Sherbrooke; 1988. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11143/15642.

Council of Science Editors:

Roberge J. Caractérisation de l'endommagement des matériaux composites carbone-époxyde sollicités en compression statique et cyclique . [Masters Thesis]. Université de Sherbrooke; 1988. Available from: http://hdl.handle.net/11143/15642

Université de Sherbrooke

15. Dupont, Luc. Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques .

Degree: 1988, Université de Sherbrooke

URL: http://hdl.handle.net/11143/15896

► Le secteur des matériaux est un des secteurs clés de développement industriel. Parmi les nouveaux matériaux qui bénéficient d'un haut taux de croissance, on retrouve… (more)

▼ Le secteur des matériaux est un des secteurs clés de développement industriel. Parmi les nouveaux matériaux qui bénéficient d'un haut taux de croissance, on retrouve les matériaux composites à haute performance. Ces composites à fibres longues possèdent des propriétés spécifiques (résistance, rigidité) très élevées. L'effet de bord, problème fréquemment rencontré dans les structures composites, est relié à l'existence de contraintes interlaminaires aux bords libres des stratifiés. Ces contraintes interlaminaires peuvent engendrer un délaminage dans les stratifiés qui mènera rapidement à la ruine du matériau. Des études ont révélé qu'un choix judicieux de la séquence d'empilement des couches composant le stratifié permet de minimiser l'effet de bord. Une analyse théorique et expérimentale de l'effet de bord a été réalisée sur des composites stratifiés fabriqués en graphite-époxy (IM6-5245C) et contenant 18 couches soit 8 à 0°, 4 à +45°, 4 à -45° et 2 à 90°. Dans la partie théorique de notre étude, on tente de déterminer avec l'aide d'outils analytiques, la séquence optimale de stratification permettant de minimiser l'effet de bord pour une sollicitation mécanique donnée (tension ou compression). À cette fin, deux méthodes d'analyse furent utilisées soit d'une part, la technique des éléments finis et d'autre part un modèle basé sur les incompatibilités de Poisson et d'influence mutuelle ainsi que sur les moments réactifs aux interfaces. Au total, dix-sept stratifiés ayant différentes stratifications ont été analysés. Ces stratifiés ont été classifiés par les deux techniques d'analyse selon leur susceptibilité à l'effet de bord. Les deux modèles ont conduit à des résultats similaires. Suite à cette analyse, trois stratifiés démontrant différents niveaux de sensibilité à l'effet de bord ont été retenus pour une étude expérimentale de leur comportement, de façon à vérifier la fiabilité des outils analytiques développés pour choisir les séquences optimales d'empilement. L'étude expérimentale comprenait une série d'essais statiques en tension et en compression en vue de déterminer les limites ultimes des trois stratifiés et de caractériser l'endommagement aux bords libres des éprouvettes produit par ces sollicitations. Une étude du comportement des trois stratifiés sous des sollicitations cycliques (spectre de charges dominé par la compression) a également été réalisée. Des classements des trois stratifiés ont été faits à partir des résultats expérimentaux. Une comparaison du classement des stratifiés prédit par la théorie et observé expérimentalement montre que la corrélation est douteuse à ce stade-ci. Une étude complexe mais plus détaillée de l'influence de chacun des paramètres considérés dans l'étude théorique s'impose. C'est-à-dire qu'on devra tenir compte dans les calculs: 1) de l'ensemble des contraintes interlaminaires ?x,?zx et ?zy, ou 2) des incompatibilités de Poisson et d'influence mutuelle ainsi que des moments réactifs aux interfaces, en vue d'obtenir un modèle d'interprétation des résultats théoriques qui… Advisors/Committee Members: Roy, Clermont (advisor).

Subjects/Keywords: Composites

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

APA (6^th Edition):

Dupont, L. (1988). Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/15896

Chicago Manual of Style (16^th Edition):

Dupont, Luc. “Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques .” 1988. Masters Thesis, Université de Sherbrooke. Accessed February 26, 2020. http://hdl.handle.net/11143/15896.

MLA Handbook (7^th Edition):

Dupont, Luc. “Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques .” 1988. Web. 26 Feb 2020.

Vancouver:

Dupont L. Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques . [Internet] [Masters thesis]. Université de Sherbrooke; 1988. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/11143/15896.

Council of Science Editors:

Dupont L. Étude du comportement mécanique d'un composite stratifié graphite/epoxy soumis à des sollicitations monotones et cycliques . [Masters Thesis]. Université de Sherbrooke; 1988. Available from: http://hdl.handle.net/11143/15896

16. Bouzat, Fabien. Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes.

Degree: Docteur es, Matériaux Céramiques et Traitements de Surface, 2015, Limoges

URL: http://www.theses.fr/2015LIMO0130

►

Dans le domaine des matériaux de structure destinés à des applications thermomécaniques sous conditions extrêmes, les carbures métalliques et, plus particulièrement, ceux de la famille… (more)

▼

Dans le domaine des matériaux de structure destinés à des applications thermomécaniques sous conditions extrêmes, les carbures métalliques et, plus particulièrement, ceux de la famille de métaux de transition (i.e. titane, zirconium, hafnium) sont de bons candidats étant donné la nature à la fois métallique et covalente de leurs liaisons. De plus, parmi les céramiques non-oxydes, le carbure de silicium est le plus employé dans la réalisation de composites particulaires du fait de son bon comportement à l’oxydation à haute température. Les composites de type SiC/ZrC seraient de bons candidats pour des applications à haute température dans des atmosphères oxydantes car ils sont susceptibles de développer des propriétés thermostructurales intéressantes. Cependant, l’élaboration de composites particulaires, avec un bon contrôle de la distribution respective des deux phases carbures au sein de la microstructure, n’est pas parfaitement maîtrisée. En particulier, l’amélioration ou l’optimisation des performances thermomécaniques de ces céramiques avancées, exige le contrôle de leur composition chimique à l’échelle atomique et de leur nanostructuration. L’approche « Precursor Derived Ceramics » (PDCs) permet notamment de moduler la composition du matériau à l’échelle moléculaire et d’obtenir des matériaux de formes diverses et complexes (nanomatériaux, fibres, dépôts, composites). Cette méthode, appliquée au système Si/C/Zr, est basée sur la synthèse de polymères précéramiques par chimie click et hydrosilylation. Des poudres ultrafines obtenues après le traitement thermique par spray pyrolyse laser des précurseurs pourront suivre des étapes ultimes de mise en forme, de consolidation et de densification.

In the field of structural materials for thermomechanical applications under extreme conditions, metal carbides, and more specifically, those of the transition metal family (i.e. titanium, zirconium, hafnium) are good candidates thanks to the nature of the both metallic and covalent bonds. Further, among the non-oxide ceramics, silicon carbide is the most used in the elaboration of particulate composites because of its good oxidation behavior at high temperature. SiC/ZrC composites would be good candidates for high temperature applications in oxidizing atmospheres thanks to their ability to develop interesting thermostructural properties. However, the development of particulate composites, with good control of the respective distribution of the two carbides phases in the microstructure is not well controlled. Particularly, improving or optimizing the thermomechanical performances of these advanced ceramics, requires to control the chemical composition at the atomic scale and their nanostructuration. The "Precursor Derived Ceramics" approach (PDCs) notably allows to modulate the composition of the material at the molecular level and to obtain materials of various and complex shapes (nanomaterials, fibers, deposits, composites). This method, applied to the Si/C/Zr system is based on the synthesis ofpreceramic polymers by…

Advisors/Committee Members: Foucaud, Sylvie (thesis director), Lucas, Romain (thesis director).

Subjects/Keywords: Composites SiC/ZrC; SiC/ZrC Composites; 620.14

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APA (6^th Edition):

Bouzat, F. (2015). Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes. (Doctoral Dissertation). Limoges. Retrieved from http://www.theses.fr/2015LIMO0130

Chicago Manual of Style (16^th Edition):

Bouzat, Fabien. “Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes.” 2015. Doctoral Dissertation, Limoges. Accessed February 26, 2020. http://www.theses.fr/2015LIMO0130.

MLA Handbook (7^th Edition):

Bouzat, Fabien. “Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes.” 2015. Web. 26 Feb 2020.

Vancouver:

Bouzat F. Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes. [Internet] [Doctoral dissertation]. Limoges; 2015. [cited 2020 Feb 26]. Available from: http://www.theses.fr/2015LIMO0130.

Council of Science Editors:

Bouzat F. Elaboration des composites SiC/ZrC par synthèse organométallique et par différentes voies de pyrolyse : Development of SiC/ZrC composites by organometallic synthesis and by different pyrolysis routes. [Doctoral Dissertation]. Limoges; 2015. Available from: http://www.theses.fr/2015LIMO0130

University of Johannesburg

17. Madzivhandila, Takalani. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/8034

►

M.Tech.

The mining industry exerts ever increasing demand for components with high wear resistance to the extent that plain ferrous alloys are falling short. Innovative… (more)

▼

M.Tech.

The mining industry exerts ever increasing demand for components with high wear resistance to the extent that plain ferrous alloys are falling short. Innovative metal-matrix composites nonferrous metals have been widely researched and used. Casting composites based on ferrous alloys pose monumental challenges in casting. Firstly, the density differential results in large resistant forces on the ceramic such that unless a rigid structure is configured, the less dense ceramic floats on the metal stream. Secondly, the poor wetting properties between metal and ceramic will result in inferior bonding of the matrix, hence separation of solids in service.This study presents the feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application including wettability and the bonding between the matrix and the composite. The cold rods of alumina positioned in the mould prior to casting cracked as soon as they came in contact with hot metal. Because of the density difference between ceramic and liquid metal the alumina tended to float under the influence of Ferro static pressure. Infiltration of zirconia (ZrO2) and alumina (Al2O3) in ferrous matrix was investigated. Infiltration of liquid metal in ceramic filters increased with porosity of filters i.e. greater infiltration occurred in filters with larger pore volume fraction measured in terms of number of pores per linear inch (ppi). Thus, there was high infiltration in casting with 10ppi followed by 30ppi and there was poor infiltration in 50ppi ceramics. Infiltration increased with increasing temperature of the ceramics. A temperature of 1000 °C was found to be superior to 800 °C. The wetting behaviour of molten iron on the substrates of Al2O3 was investigated. Titanium in high chromium white cast iron was found to improve the wetting characteristics on alumina. The wetting angle decreased with increased titanium content. The wear properties of ferrous alloys used were not significantly improved by the ceramic used to make the composite. Filters are produced by a deposition process and hence are not densified for the purpose of manufacturing hard composites

Subjects/Keywords: Ceramic-matrix composites; Metallic composites; Ceramic fibers

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APA (6^th Edition):

Madzivhandila, T. (2012). Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/8034

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):

Madzivhandila, Takalani. “Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.” 2012. Thesis, University of Johannesburg. Accessed February 26, 2020. http://hdl.handle.net/10210/8034.

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

MLA Handbook (7^th Edition):

Madzivhandila, Takalani. “Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.” 2012. Web. 26 Feb 2020.

Vancouver:

Madzivhandila T. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/10210/8034.

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

Council of Science Editors:

Madzivhandila T. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/8034

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

Université Montpellier II

18. Papavero, Amory. Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites.

Degree: Docteur es, Chimie et physicochimie des matériaux, 2012, Université Montpellier II

URL: http://www.theses.fr/2012MON20240

Élaboration et caractérisation de composites hybrides thermoélectriques

Synthesis and characterisation of thermoelectric composites

Advisors/Committee Members: Tédenac, Jean-Claude (thesis director), Cornu, David-Jacques (thesis director).

Subjects/Keywords: Composites; Thermoélectricité; Synthèse; Composites; Thermoelectricity; Synthesis

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APA (6^th Edition):

Papavero, A. (2012). Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites. (Doctoral Dissertation). Université Montpellier II. Retrieved from http://www.theses.fr/2012MON20240

Chicago Manual of Style (16^th Edition):

Papavero, Amory. “Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites.” 2012. Doctoral Dissertation, Université Montpellier II. Accessed February 26, 2020. http://www.theses.fr/2012MON20240.

MLA Handbook (7^th Edition):

Papavero, Amory. “Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites.” 2012. Web. 26 Feb 2020.

Vancouver:

Papavero A. Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites. [Internet] [Doctoral dissertation]. Université Montpellier II; 2012. [cited 2020 Feb 26]. Available from: http://www.theses.fr/2012MON20240.

Council of Science Editors:

Papavero A. Élaboration et caractérisation de composites hybrides thermoélectriques : Synthesis and characterisation of thermoelectric composites. [Doctoral Dissertation]. Université Montpellier II; 2012. Available from: http://www.theses.fr/2012MON20240

University of Manitoba

19. Gupta, Abhishek. Creep of plain weave polymer matrix composites.

Degree: Mechanical and Manufacturing Engineering, 2010, University of Manitoba

URL: http://hdl.handle.net/1993/3849

► Woven (also known as textile) composites are one class of polymer matrix composites with increasing market share in aerospace, autmobile, civil infrastructure applications mostly due… (more)

▼ Woven (also known as textile) composites are one class of polymer matrix composites with increasing market share in aerospace, autmobile, civil infrastructure applications mostly due to their lightweight, their flexibility to form into desired shape, their mechanical properties and toughness. Due to the viscoelasticity of the polymer matrix, time-dependent degradation in modulus (creep) and strength (creep rupture) are two of the major mechanical properties required by engineers to design a structure reliably when using these materials. Unfortunately, creep and creep rupture of woven composites have received little attention by the research community and thus, there is a dire need to generate additional knowledge and prediction models, given the increasing market share of woven composites in load bearing structural applications. In this thesis, an analytical creep model, namely the Modified Equivalent Laminate Model (MELM), was developed to predict tensile creep of plain weave composites for any orientation of the load with respect to the orientation of the fill and warp fibers, using creep of unidirectional composites. The model was validated using an extensive experimental involving the tensile creep of plain weave composites under varying loading orientation and service conditions. Plain weave epoxy (F263)/ carbon fiber (T300) composite, currently used in aerospace applications, was procured as fabrics from Hexcel Corporation. Creep tests were conducted under two loading conditions: on-axis loading (00) and off-axis loading (450). Constant load creep, in the temperature range of 80–2400C and stress range of 1-70% UTS of the composites, was experimentally evaluated for time periods ranging from 1–120 hours under both loading conditions. The composite showed increase in creep with increase in temperature and stress. Creep of composite increased with increase in angle of loading, from 1% under on-axis loading to 31% under off-axis loading, within the tested time window. The experimental creep data for plain weave composites were superposed using TTSP (Time Temperature Superposition Principle) to obtain a master curve of experimental data extending to several years and was compared with model predictions to validate the model. The experimental and model results were found in good agreement within an error range of +1-3% under both loading conditions. A parametric study was also conducted to understand the effect of microstructure of plain weave composites on its on-axis and off-axis creep. Additionally, this thesis generated knowledge on time-dependent damage in woven composites and its effect on creep and tensile properties and their prediction. Advisors/Committee Members: Jayaraman, Raghavan (Mechanical & Manufacturing Engineering) (supervisor), Hoa, Suong(Mechanical & Industrial Engineering, Concordia University) Polyzois, Dimos (Civil Engineering) Bassim, Nabil (Mechanical & Manufacuturing Engineering) (examiningcommittee).

Subjects/Keywords: Plain Weave Composites; Creep; Woven Composites

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APA (6^th Edition):

Gupta, A. (2010). Creep of plain weave polymer matrix composites. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/3849

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):

Gupta, Abhishek. “Creep of plain weave polymer matrix composites.” 2010. Thesis, University of Manitoba. Accessed February 26, 2020. http://hdl.handle.net/1993/3849.

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

MLA Handbook (7^th Edition):

Gupta, Abhishek. “Creep of plain weave polymer matrix composites.” 2010. Web. 26 Feb 2020.

Vancouver:

Gupta A. Creep of plain weave polymer matrix composites. [Internet] [Thesis]. University of Manitoba; 2010. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/1993/3849.

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

Council of Science Editors:

Gupta A. Creep of plain weave polymer matrix composites. [Thesis]. University of Manitoba; 2010. Available from: http://hdl.handle.net/1993/3849

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

Hong Kong University of Science and Technology

20. Zhao, Zhiyuan. Transport properties of pseudo ductile cementitious composites.

Degree: 2012, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7525 ; https://doi.org/10.14711/thesis-b1176703 ; http://repository.ust.hk/ir/bitstream/1783.1-7525/1/th_redirect.html

► The transport properties of concrete are important parameters governing the durability of reinforced concrete structures. As the opening of cracks can significantly degrade the transport… (more)

▼ The transport properties of concrete are important parameters governing the durability of reinforced concrete structures. As the opening of cracks can significantly degrade the transport properties, the crack control ability of materials is also important for maintaining high durability under practical situations. This study focuses on the water permeability and chloride diffusivity of pseudo-ductile cementitious composites (PDCC), which exhibits strain-hardening behavior in tension accompanied by the formation of closely spaced cracks with very small opening. , Concrete structures with a surface layer of PDCC can potentially exhibit excellent durability. However, former work related to the design of PDCC has focused on the achievement of pseudo-ductility, so good transport properties at the un-cracked state are not guaranteed. In this investigation, water permeability and chloride diffusivity tests are carried out together with direct tensile test on a number of PDCC compositions. The effect of various mix design parameters (including pozzolan/cement ratio, pozzolan type, sand/binder ratio, percentage of rubber particles and dosage of pore blocking admixture) on both the pseudo-ductility and the transport properties can hence be studied. From the results, we have identified PDCC compositions with (i) tensile ductility over 0.9% and excellent control of crack opening, and (ii) transport properties similar to high performance concrete. The findings pave the way for optimizing PDCC mix design for both mechanical performance and long-term durability. As part of our study, the transport properties of cracked PDCC specimens are also measured. The PDCC has good crack width control capability and a large number of fine cracks instead of a single main crack are formed under tensile loading. With transport properties measured from both cracked and un-cracked specimens, the effect of cracking can be quantified. The results show that the crack width is the key factor that affects the transport properties, as a tiny increase of the crack width can lead to a large increase of transport through the crack. For the same deformation, the crack opening in PDCC is much less than that in normal concrete, so the change in transport properties is also much smaller. According to the results of the present investigation, PDCC has a high potential for practical application as a surface layer or permanent formwork for the construction of durable concrete structures.

Subjects/Keywords: Cement composites – Transport properties ; Cement composites – Testing

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APA (6^th Edition):

Zhao, Z. (2012). Transport properties of pseudo ductile cementitious composites. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7525 ; https://doi.org/10.14711/thesis-b1176703 ; http://repository.ust.hk/ir/bitstream/1783.1-7525/1/th_redirect.html

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):

Zhao, Zhiyuan. “Transport properties of pseudo ductile cementitious composites.” 2012. Thesis, Hong Kong University of Science and Technology. Accessed February 26, 2020. http://repository.ust.hk/ir/Record/1783.1-7525 ; https://doi.org/10.14711/thesis-b1176703 ; http://repository.ust.hk/ir/bitstream/1783.1-7525/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Zhao, Zhiyuan. “Transport properties of pseudo ductile cementitious composites.” 2012. Web. 26 Feb 2020.

Vancouver:

Zhao Z. Transport properties of pseudo ductile cementitious composites. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2012. [cited 2020 Feb 26]. Available from: http://repository.ust.hk/ir/Record/1783.1-7525 ; https://doi.org/10.14711/thesis-b1176703 ; http://repository.ust.hk/ir/bitstream/1783.1-7525/1/th_redirect.html.

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

Council of Science Editors:

Zhao Z. Transport properties of pseudo ductile cementitious composites. [Thesis]. Hong Kong University of Science and Technology; 2012. Available from: http://repository.ust.hk/ir/Record/1783.1-7525 ; https://doi.org/10.14711/thesis-b1176703 ; http://repository.ust.hk/ir/bitstream/1783.1-7525/1/th_redirect.html

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

Hong Kong University of Science and Technology

21. Zhang, Lei MAE. Study on organics-accelerated benzoxazine polymerization and the structure-property relationship.

Degree: 2017, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-97182 ; https://doi.org/10.14711/thesis-b1781046 ; http://repository.ust.hk/ir/bitstream/1783.1-97182/1/th_redirect.html

► Polybenzoxazine constitutes a new generation of thermosets, which inherits the advantages from phenolic resins while overcomes the drawbacks. The other unique properties, such as low… (more)

▼ Polybenzoxazine constitutes a new generation of thermosets, which inherits the advantages from phenolic resins while overcomes the drawbacks. The other unique properties, such as low curing shrinkage, low water absorption and good molecular design flexibility, make it a potential candidate in adhesives, microelectronic packaging as well as aerospace engineering. However, conventional benzoxazines are mostly solid under room temperature and require high curing temperature, which complicate their processing and limit their commercialization. Brønsted acids and Lewis acids are efficient accelerators for benzoxazine polymerization. But they are prohibited in electronics, metal adhension and outdoor applications due to the halogen and metal elements, corrosive acidic attributes and moisture sensitivity. Organics like phenol and thiol are effective accelerators without the aforementioned disadvantages. However, when they are used as the accelerators, the properties of the materials are worse than that of their thermally cured counterparts. Amine is a newly discovered accelerator for benzoxazine. By carefully designing the molecular structure of amine, it is possible to accelerate benzoxazine polymerization as well as enhance material properties. Unfortunately, the mechanism of benzoxazine/amine reaction is still not very clear to date. Thus, it is of significant importance to investigate the reaction mechanism and establish the structure-property relationship in order to provide the guideline for accelerator design. Therefore, the aim of the thesis is to 1) develop new benzoxazine and benzoxazine/epoxy system with good processability and material properties; 2) establish the structure-property relationship; 3) investigate the reaction mechanism of benzoxazine and amine 4) introduce a new methodology for developing accelerators to benefit both polymerization and material properties. The first part of the thesis reports the development of a new benzoxazine through convenient preparation method with inexpensive raw materials to overcome the challenges of high liquefying and curing temperature. The product is liquid under room temperature with a low viscosity suitable for resin transfer molding. The incorporated amine accelerates the polymerization at low temperature, which is much faster than that of conventional benzoxazine. By copolymerization with epoxy, the obtained copolymers show better material performances, which include higher glass transition temperature, higher char yield, high flexural modulus and strength. The second part focuses on establishing the structure-property relationship of benzoxazine and amine. Phenylenediamine isomers are selected in this part of study and the directing effect of amino group on aryl ring is highlighted. Other than the conventional amine-attacking path when any kind of amine is used, aryl-attacking path is found only when meta-isomer is applied. The new path siginificantly changes the reactivity of meta-isomer with benzoxazine and dramatically influences the material properties. Due…

Subjects/Keywords: Thermosetting composites ; Polymeric composites ; Thermal properties

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APA (6^th Edition):

Zhang, L. M. (2017). Study on organics-accelerated benzoxazine polymerization and the structure-property relationship. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-97182 ; https://doi.org/10.14711/thesis-b1781046 ; http://repository.ust.hk/ir/bitstream/1783.1-97182/1/th_redirect.html

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, Lei MAE. “Study on organics-accelerated benzoxazine polymerization and the structure-property relationship.” 2017. Thesis, Hong Kong University of Science and Technology. Accessed February 26, 2020. http://repository.ust.hk/ir/Record/1783.1-97182 ; https://doi.org/10.14711/thesis-b1781046 ; http://repository.ust.hk/ir/bitstream/1783.1-97182/1/th_redirect.html.

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, Lei MAE. “Study on organics-accelerated benzoxazine polymerization and the structure-property relationship.” 2017. Web. 26 Feb 2020.

Vancouver:

Zhang LM. Study on organics-accelerated benzoxazine polymerization and the structure-property relationship. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2017. [cited 2020 Feb 26]. Available from: http://repository.ust.hk/ir/Record/1783.1-97182 ; https://doi.org/10.14711/thesis-b1781046 ; http://repository.ust.hk/ir/bitstream/1783.1-97182/1/th_redirect.html.

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

Council of Science Editors:

Zhang LM. Study on organics-accelerated benzoxazine polymerization and the structure-property relationship. [Thesis]. Hong Kong University of Science and Technology; 2017. Available from: http://repository.ust.hk/ir/Record/1783.1-97182 ; https://doi.org/10.14711/thesis-b1781046 ; http://repository.ust.hk/ir/bitstream/1783.1-97182/1/th_redirect.html

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

Baylor University

22. Zhang, Cong, 1986-. Modeling of flexible fiber motion and prediction of material properties.

Degree: M.S.M.E., Engineering., 2011, Baylor University

URL: http://hdl.handle.net/2104/8251

► This work employs the rod chain model of Wang et al. (2006) to study the motion of discrete flexible fibers. Results are presented for both… (more)

Subjects/Keywords: Fiber reinforced composites.; Polymeric composites.; Modeling.; Simulation.

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APA (6^th Edition):

Zhang, Cong, 1. (2011). Modeling of flexible fiber motion and prediction of material properties. (Masters Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/8251

Chicago Manual of Style (16^th Edition):

Zhang, Cong, 1986-. “Modeling of flexible fiber motion and prediction of material properties.” 2011. Masters Thesis, Baylor University. Accessed February 26, 2020. http://hdl.handle.net/2104/8251.

MLA Handbook (7^th Edition):

Zhang, Cong, 1986-. “Modeling of flexible fiber motion and prediction of material properties.” 2011. Web. 26 Feb 2020.

Vancouver:

Zhang, Cong 1. Modeling of flexible fiber motion and prediction of material properties. [Internet] [Masters thesis]. Baylor University; 2011. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/2104/8251.

Council of Science Editors:

Zhang, Cong 1. Modeling of flexible fiber motion and prediction of material properties. [Masters Thesis]. Baylor University; 2011. Available from: http://hdl.handle.net/2104/8251

23. Parvatikar, Narsimha. Some studies on polyaniline and its composites.

Degree: Physics, 2005, Gulbarga University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/17685

►

Tremendous advances have been made during the past decade in our understanding of the Physics, chemistry, electrochemistry, structure, electrical and optical phenomena, processing and applications… (more)

Subjects/Keywords: Physics; Polyaniline; Composites

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APA (6^th Edition):

Parvatikar, N. (2005). Some studies on polyaniline and its composites. (Thesis). Gulbarga University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/17685

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):

Parvatikar, Narsimha. “Some studies on polyaniline and its composites.” 2005. Thesis, Gulbarga University. Accessed February 26, 2020. http://shodhganga.inflibnet.ac.in/handle/10603/17685.

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

MLA Handbook (7^th Edition):

Parvatikar, Narsimha. “Some studies on polyaniline and its composites.” 2005. Web. 26 Feb 2020.

Vancouver:

Parvatikar N. Some studies on polyaniline and its composites. [Internet] [Thesis]. Gulbarga University; 2005. [cited 2020 Feb 26]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17685.

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

Council of Science Editors:

Parvatikar N. Some studies on polyaniline and its composites. [Thesis]. Gulbarga University; 2005. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17685

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

24. Pavia, Fabio. Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites.

Degree: PhD, Solid Mechanics, 2013, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:320475/

► Carbon nanotubes (CNTs) have the potential to introduce significant improvements in fracture strength and toughness of ceramic materials when compared to traditional microscale reinforcements. Ceramic… (more)

▼ Carbon nanotubes (CNTs) have the potential to introduce significant improvements in fracture strength and toughness of ceramic materials when compared to traditional microscale reinforcements. Ceramic matrix composites (CMCs) with CNTs are attractive as coatings and structural components in sectors where strong materials with low-weight and resistant to elevated temperature are needed. We develop atomistic simulations to characterize the mechanical behavior of the interface between a diamond matrix and an embedded nanotube, and we extend our analysis to the microscale by applying the properties obtained at a molecular level in shear-lag models of realistic nanoceramic composites. We capture bonding between a diamond matrix and a carbon nanotube by considering interstitial carbon atoms located at the interface, with a frictional force generated by the energy dissipated during breaking and reforming of bonds involving the interstitials. Using atomistic models of diamond nanocomposites, we find that, even for very strong interfaces coupling nanotube and matrix, an incident crack does not immediately penetrate into the nanotube but does induce shear distortions in the interstitial/matrix or interstitial/CNT bonds until the tube fractures from a critical small-scale defect nucleated near the matrix crack faces. At high density of interstitials the nanotube does not debond from the matrix and the composite behaves as a brittle ceramics, thus, a balance of toughness and strength must be tailored. The analytic models studying the optimization of realistic nanocomposites show that the control of interstitial carbon density and nanotube functionalization through material processing, for instance chemistry and atmosphere control during CVD deposition of the diamond matrix, along with tailoring of the nanotube morphology (interwall coupling, diameter, wall thickness, waviness), could permit the engineering of materials having high hardness and damage tolerance at submicron scales. Advisors/Committee Members: Curtin, William (Director), Blume, Janet (Reader), Sheldon, Brian (Reader).

Subjects/Keywords: Ceramic Matrix Composites

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APA (6^th Edition):

Pavia, F. (2013). Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:320475/

Chicago Manual of Style (16^th Edition):

Pavia, Fabio. “Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites.” 2013. Doctoral Dissertation, Brown University. Accessed February 26, 2020. https://repository.library.brown.edu/studio/item/bdr:320475/.

MLA Handbook (7^th Edition):

Pavia, Fabio. “Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites.” 2013. Web. 26 Feb 2020.

Vancouver:

Pavia F. Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites. [Internet] [Doctoral dissertation]. Brown University; 2013. [cited 2020 Feb 26]. Available from: https://repository.library.brown.edu/studio/item/bdr:320475/.

Council of Science Editors:

Pavia F. Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites. [Doctoral Dissertation]. Brown University; 2013. Available from: https://repository.library.brown.edu/studio/item/bdr:320475/

University of Southern California

25. Kar, Nikhil Kumar. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.

Degree: PhD, Mechanical Engineering, 2012, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2773

► Polymer matrix composites (PMCs) have been used extensively in the aerospace industry for the past five decades. There has been an upsurge in the use… (more)

Subjects/Keywords: composites; fatigue; durability

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APA (6^th Edition):

Kar, N. K. (2012). Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2773

Chicago Manual of Style (16^th Edition):

Kar, Nikhil Kumar. “Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.” 2012. Doctoral Dissertation, University of Southern California. Accessed February 26, 2020. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2773.

MLA Handbook (7^th Edition):

Kar, Nikhil Kumar. “Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.” 2012. Web. 26 Feb 2020.

Vancouver:

Kar NK. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. [Internet] [Doctoral dissertation]. University of Southern California; 2012. [cited 2020 Feb 26]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2773.

Council of Science Editors:

Kar NK. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. [Doctoral Dissertation]. University of Southern California; 2012. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2773

Oregon State University

26. Bai, Wen. New application of crystalline cellulose in rubber composites.

Degree: PhD, Wood Science, 2009, Oregon State University

URL: http://hdl.handle.net/1957/13475

► Rubber without reinforcement has limited applications. The strength of reinforced rubber composites can be ten times stronger than that of unreinforced rubbers. Therefore, rubber composites… (more)

▼ Rubber without reinforcement has limited applications. The strength of reinforced rubber composites can be ten times stronger than that of unreinforced rubbers. Therefore, rubber composites are widely used in various applications ranging from automobile tires to seals, valves, and gaskets because of their excellent mechanical elastic properties. Silica and carbon black are the two most commonly used reinforcing materials in rubber tires. They are derived from non-renewable materials and are expensive. Silica also contributes to a large amount of ash when used tires are disposed of by incineration. There is a need for a new reinforcing filler that is inexpensive, renewable and easily disposable. Cellulose is the most abundant natural polymer. Native cellulose includes crystalline regions and amorphous regions. Crystalline cellulose can be obtained by removing the amorphous regions with the acid hydrolysis of cellulose because the amorphous cellulose can be hydrolyzed faster than crystalline cellulose. We recently discovered that the partial replacement of silica with microcrystalline cellulose (MCC) provided numerous benefits: 1) low energy consumption for compounding, 2) good processability, 3) strong tensile properties, 4) good heat resistance, and 5) potential for good fuel efficiency in the application of rubber tires. Strong bonding between fillers and a rubber matrix is essential for imparting rubber composites with the desired properties for many specific applications. The bonding between hydrophilic MCC and the hydrophobic rubber matrix is weak and can be improved by addition of a coupling agent or surface modifications of MCC. In this study, MCC was surface-modified with acryloyl chloride or alkenyl ketene dimer (AnKD) to form acrylated MCC (A-MCC) and AnKD-modified MCC (AnKD-MCC). The surface modifications of MCC did not change the integrity and mechanical properties of MCC, but provided functional groups that were able to form covalent linkages with the rubber matrix during the vulcanization. Both A-MCC and AnKD-MCC facilitated the process and production of rubber composites and improved tensile properties and heat resistance of the resulting rubber composites as MCC did when they were used for the partial replacement of silica in rubber composites. Furthermore, A-MCC and AnKD-MCC were superior to MCC in terms of improving tear properties of rubber composites. It has been well-established that the size and the geometrical features of reinforcing fillers play important roles in the mechanical properties of the reinforced composites. MCC was further hydrolyzed with acid to form nanocrystalline cellulose (NCC), i.e., cellulose crystals with their width of less than 100 nm. A novel differential centrifugation technique has been developed for separation of NCC mixtures into fractions with a narrow size distribution. The NCC was investigated as a filler in rubber composites through a dry blending process, but saw little success. NCC had to be dried before it could be blended with… Advisors/Committee Members: Li, Kaichang (advisor), Hansen, Everett (committee member).

Subjects/Keywords: Rubber composites; Cellulose

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APA (6^th Edition):

Bai, W. (2009). New application of crystalline cellulose in rubber composites. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/13475

Chicago Manual of Style (16^th Edition):

Bai, Wen. “New application of crystalline cellulose in rubber composites.” 2009. Doctoral Dissertation, Oregon State University. Accessed February 26, 2020. http://hdl.handle.net/1957/13475.

MLA Handbook (7^th Edition):

Bai, Wen. “New application of crystalline cellulose in rubber composites.” 2009. Web. 26 Feb 2020.

Vancouver:

Bai W. New application of crystalline cellulose in rubber composites. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/1957/13475.

Council of Science Editors:

Bai W. New application of crystalline cellulose in rubber composites. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/13475

Penn State University

27. Matthews, Peter Joseph. Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts.

Degree: PhD, Engineering Science and Mechanics, 2015, Penn State University

URL: https://etda.libraries.psu.edu/catalog/25002

► This work aims to improve the predictive capability for fiber-reinforced polymer matrix composite laminates using the finite element method. A new tool for modeling composite… (more)

Subjects/Keywords: composites; delamination; damage

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APA (6^th Edition):

Matthews, P. J. (2015). Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/25002

Chicago Manual of Style (16^th Edition):

Matthews, Peter Joseph. “Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts.” 2015. Doctoral Dissertation, Penn State University. Accessed February 26, 2020. https://etda.libraries.psu.edu/catalog/25002.

MLA Handbook (7^th Edition):

Matthews, Peter Joseph. “Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts.” 2015. Web. 26 Feb 2020.

Vancouver:

Matthews PJ. Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts. [Internet] [Doctoral dissertation]. Penn State University; 2015. [cited 2020 Feb 26]. Available from: https://etda.libraries.psu.edu/catalog/25002.

Council of Science Editors:

Matthews PJ. Modeling Continuous-fiber Reinforced Polymer Composites for Exploration of Damage Tolerant Concepts. [Doctoral Dissertation]. Penn State University; 2015. Available from: https://etda.libraries.psu.edu/catalog/25002

28. Sheikh Hassan, Ahmed. Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect.

Degree: Docteur es, Pharmacologie, 2008, Université Henri Poincaré – Nancy I

URL: http://www.theses.fr/2008NAN10128

►

Les formes multiparticulaires injectables présentent l’inconvénient d’une libération initiale prématurée dont les conséquences sont une toxicité systémique si les concentrations sanguines du principe actif deviennent… (more)

▼

Les formes multiparticulaires injectables présentent l’inconvénient d’une libération initiale prématurée dont les conséquences sont une toxicité systémique si les concentrations sanguines du principe actif deviennent importantes ainsi qu’une modification de la libération. Pour résoudre ce problème, des microparticules composites ont été mises au point : il s’agit de microparticules encapsulant des nanoparticules. Le concept a d’abord été démontré in vitro en encapsulant des nanoparticules de poly(epsilon-caprolactone) dans un polymère non biodégradable en choisissant comme modèles une molécule de faible masse moléculaire (ibuprofène) et un peptide (acétate de triptoréline). L’originalité du travail réside dans le choix des polymères et des solvants retenus pour la fabrication des microparticules. Le solvant utilisé pour fabriquer les microparticules doit être un non-solvant du polymère des nanoparticules. L’acétate d’éthyle répondait à ces conditions puisqu’il ne dissout pas la poly(epsilon-caprolactone) mais que c’est un excellent solvant de l’éthylcellulose ou du polymère polycationique utilisé dans la première partie du travail. Sur la base d’études de libération in vitro, il a ainsi été démontré que les microparticules composites permettaient effectivement de fortement réduire cette libération précoce tout en continuant d’assurer une libération prolongée. Dans un deuxième temps, la réduction de la libération initiale a été confirmée par une étude in vivo chez le rat avec 2 principes actifs modèles : ibuprofène et insuline. Toutefois, le polymère de la matrice des microparticules a été remplacé par un copolymère biodégradable constitué d’acides lactique et glycolique. Il a été démontré que le nouveau concept de microparticules composites permettait de proposer une forme originale limitant la libération initiale des principes actifs suite à leur administration sous-cutanée ou intramusculaire tout en assurant une libération prolongée

Multiparticular injectable dosage forms present a burst effect known to lead to i) a systemic toxicoligal critical issue if blood concentrations of the drug are too high and ii) a change in the release profile due to a lower loading charge in microparticles. In order to solve this problem, composite microparticles have been developed: they consist in nanoparticles encapsulated in microparticles. Such a concept has been demonstrated in vitro by encapsulating poly(epsiloncaprolactone) nanoparticles in a non-biodegradable polymeric matrix with two model drugs: a small molecular weight drug (ibuprofene) and a peptide (triptorelin acetate). The novelty of the research work lies on the adequate choice of polymers and solvents used for microparticles manufacturing. Indeed, the solvent used to manufacture microparticles has to be a non-solvent of the nanoparticles polymer. Ethyl acetate was a good candidate since it does not dissolve poly(epsilon-caprolactone) nanoparticles but is an excellent solvent for ethylcellulose and the polycationic polymer used in the first part of the work. Based…

Advisors/Committee Members: Maincent, Philippe (thesis director), Sapin-Minet, Anne (thesis director).

Subjects/Keywords: Microparticules composites; Burst

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

APA (6^th Edition):

Sheikh Hassan, A. (2008). Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect. (Doctoral Dissertation). Université Henri Poincaré – Nancy I. Retrieved from http://www.theses.fr/2008NAN10128

Chicago Manual of Style (16^th Edition):

Sheikh Hassan, Ahmed. “Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect.” 2008. Doctoral Dissertation, Université Henri Poincaré – Nancy I. Accessed February 26, 2020. http://www.theses.fr/2008NAN10128.

MLA Handbook (7^th Edition):

Sheikh Hassan, Ahmed. “Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect.” 2008. Web. 26 Feb 2020.

Vancouver:

Sheikh Hassan A. Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect. [Internet] [Doctoral dissertation]. Université Henri Poincaré – Nancy I; 2008. [cited 2020 Feb 26]. Available from: http://www.theses.fr/2008NAN10128.

Council of Science Editors:

Sheikh Hassan A. Microparticules à libération prolongée et réduisant la libération intiale prématurée : Prolonged release microparticles able to reduce the initial burst effect. [Doctoral Dissertation]. Université Henri Poincaré – Nancy I; 2008. Available from: http://www.theses.fr/2008NAN10128

Virginia Tech

29. Kunc, Vlastimil. Structure-property relationships in flow formed discontinuous fiber reinforced composites.

Degree: PhD, Engineering Science and Mechanics, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/52934

► This dissertation presents a new method for obtaining fully anisotropic stiffness tensor for materials containing discontinuous curverd fibers. It is demonstrated that the definition of… (more)

Subjects/Keywords: composites; micromechanics; elasticity

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

APA (6^th Edition):

Kunc, V. (2013). Structure-property relationships in flow formed discontinuous fiber reinforced composites. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/52934

Chicago Manual of Style (16^th Edition):

Kunc, Vlastimil. “Structure-property relationships in flow formed discontinuous fiber reinforced composites.” 2013. Doctoral Dissertation, Virginia Tech. Accessed February 26, 2020. http://hdl.handle.net/10919/52934.

MLA Handbook (7^th Edition):

Kunc, Vlastimil. “Structure-property relationships in flow formed discontinuous fiber reinforced composites.” 2013. Web. 26 Feb 2020.

Vancouver:

Kunc V. Structure-property relationships in flow formed discontinuous fiber reinforced composites. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/10919/52934.

Council of Science Editors:

Kunc V. Structure-property relationships in flow formed discontinuous fiber reinforced composites. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/52934

Texas A&M University

30. Zhu, Huanlin. Effect of Prestress on the Mechanical Performance of Composites.

Degree: 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/156404

► Bodies are prestressed with the intention to enhance their load carrying capacity. The primary objective of this study is to understand the effect of prestressing… (more)

Subjects/Keywords: Prestress; Composites; Viscoelastic

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

APA (6^th Edition):

Zhu, H. (2015). Effect of Prestress on the Mechanical Performance of Composites. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156404

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):

Zhu, Huanlin. “Effect of Prestress on the Mechanical Performance of Composites.” 2015. Thesis, Texas A&M University. Accessed February 26, 2020. http://hdl.handle.net/1969.1/156404.

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

MLA Handbook (7^th Edition):

Zhu, Huanlin. “Effect of Prestress on the Mechanical Performance of Composites.” 2015. Web. 26 Feb 2020.

Vancouver:

Zhu H. Effect of Prestress on the Mechanical Performance of Composites. [Internet] [Thesis]. Texas A&M University; 2015. [cited 2020 Feb 26]. Available from: http://hdl.handle.net/1969.1/156404.

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

Council of Science Editors:

Zhu H. Effect of Prestress on the Mechanical Performance of Composites. [Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156404

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