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Characterization of thermal expansion of continuous fiber reinforced prepreg composites
Sriyarathne, Abhiruchika
Sriyarathne, Abhiruchika
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t25034_Sriyarathne.pdf
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2025-05
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A thorough review of existing methods and theories of measurement of coefficient of thermal expansion (CTE) was conducted. The kinetic cure theories and parameters behind known curing models are presented and discussed. Four finite element models were constructed. One model to evaluate the coefficient of thermal expansion in longitudinal direction (α1) of several published data and the CTE of the thru-thickness direction (α3) of the primary composite material system with glued boundary conditions between the sample and the quartz plates. The second model is constructed similar to the first model except without quartz plates and glued boundary conditions. Third model to investigate the thru-thickness direction non-reversible dimension change (cure shrinkage) of the primary composite material system. And the last model to evaluate the curing process and to numerically compute the degree of cure for a given composite material system. It was shown that the experimental data and simulation results for longitudinal, and thru-thickness coefficient of thermal expansion, cure shrinkage, and degree of cure are generally in a good agreement of each other. Future improvements to the findings of this study are also proposed.
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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
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Wichita State University
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© Copyright 2025 by Abhiruchika Sriyarathne
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