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Evaluation of the densification behavior of chemically vapor infiltrated composites in correlation with their preform architectureFiadzo, Odile 12 1900 (has links)
No description available.
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Fiber reinforced polymeric pultruded members subjected to sustained loadsKang, Jin Ook 08 1900 (has links)
No description available.
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The in-plane shear properties of pultruded materialsCho, Baik-Soon 08 1900 (has links)
No description available.
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Minimizing uncertainty in cure modeling for composites manufacturingDykeman, Donna 05 1900 (has links)
The degree of cure and temperature are consistent variables used in models to describe the state of material behaviour development for a thermoset during cure. Therefore, the validity of a cure kinetics model is an underlying concern when combining several material models to describe a part forming process, as is the case for process modeling. The goals of this work are to identify sources of uncertainty in the decision-making process from cure measurement by differential scanning calorimeter (DSC) to cure kinetics modeling, and to recommend practices for reducing uncertainty.
Variability of cure kinetics model predictions based on DSC measurements are investigated in this work by a study on the carbon-fiber-reinforced-plastic (CFRP) T800H/3900-2, an interlaboratory Round Robin comparison of cure studies on T800H/3900-2, and a literature review of cure models for Hexcel 8552. It is shown that variability between model predictions can be as large as 50% for some process conditions when uncertainty goes unchecked for decisions of instrument quality, material consistency, measurement quality, data reduction and modeling practices. The variability decreases to 10% when all of the above decisions are identical except for the data reduction and modeling practices.
In this work, recommendations are offered for the following practices: baseline selection, balancing heats of reaction, comparing data over an extensive temperature range (300 K), choosing appropriate models to describe a wide range of behaviour, testing model reliability, and visualization techniques for cure cycle selection. Specific insight is offered to the data reduction and analysis of thermoplastic-toughened systems which undergo phase separation during cure, as is the case for T800H/3900-2. The evidence of phase separation is a history-dependent Tg-α relationship. In the absence of a concise outline of best practices for cure measurement by DSC and modeling of complex materials, a list of guidelines based on the literature and the studies herein is proposed.
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Development of impact testing procedure at elevated temperature /Yang, Kwan-Ho, January 1988 (has links)
Thesis (Ph. D.)--University of Washington, 1988. / Vita. Includes bibliographical references.
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Flexure shear response in fatigue of fiber reinforced concrete beams with FRP tensile reinforcementDeYoung, Kenneth Lee. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 24, 2008) Includes bibliographical references.
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Manufacturing, testing, and evaluation of structural products with recycled polymersVarthakavi, Santosh Amarnath. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains xv, 171 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 138-140).
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Shear behaviour of engineered cement-based composites /Shang, Qinjiang. January 2006 (has links)
Thesis (MScIng)--University of Stellenbosch, 2006. / Bibliography. Also available via the Internet.
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A method of strengthening monitored deficient bridges /Decker, Brandon Richard. January 2007 (has links) (PDF)
Thesis (M.S. in Civil Engineering)--Kansas State University, 2007. / Includes bibliographical references (leaves 104-106). Also available online.
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Tribological behavior of unfilled and carbon fiber reinforced polyether ether ketone/polyether imide composites /Yoo, Jong Hyun, January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 109-113). Also available via the Internet.
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