Multi-scale Modeling of Thermal and Mechanical Properties of Composites
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Heintzelman, Pierce R.
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Abstract
This research aims to develop finite element models to predict the thermal and mechanical properties of fiber-reinforced composites and woven fiber composites. Desirable properties include elastic constants, stress-strain response, and thermal conductivity. A representative volume element (RVE) homogenization at different scales is required to estimate the properties of composite materials. Additionally, micro-computed tomography (µCT) has been undertaken on various woven composite samples such as fiberglass/epoxy and carbon fiber/epoxy composites to compare theoretical results with the measured properties. High-resolution images are achieved using µCT to distinguish the three phases of composites, i.e., fiber tows, voids, and the surrounding matrix. Calibration of structural and thermal properties against the measured values at the component level will be performed to estimate the model's parameters.
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2023-05-02
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