The proper determination of high-temperature constitutive properties and damage of polymer-matrix composites (PMC) in an aggressive environment is critical in high-speed aircraft and propulsion material development, structural integrity, and long-term life prediction. In this paper, a computational micromechanics study is conducted to obtain high-temperature constitutive properties of the PMC undergoing simultaneous thermal oxidation reaction, microstructural damage, and thermomechanical loading. The computational micromechanics approach follows the recently developed irreversible thermodynamic theory for polymer composites with reaction and microstructural change under combined chemical, thermal, and mechanical loading. Proper microstructural modeling of the PMC is presented to ensure that reaction activities, thermal and mechanical responses of the matrix, fibers, and fiber-matrix interface are fully addressed. A multiscale homogenization theory is used in conjunction with a finite element representation of material and reaction details to determine continuous evolution of composite microstructure change and associated degradation of the mechanical and physical properties. Numerical examples are given on a commonly used G30-500/PMR15 composite for illustration.
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January 2006
Research Papers
Computational Micromechanics for High-Temperature Constitutive Equations of Polymer-Matrix Composites With Oxidation Reaction, Damage, and Degradation
Su Su Wang,
Su Su Wang
Distinguished University Professor
Composite Engineering and Applications Center (CEAC), and Department of Mechanical Engineering,
University of Houston
, Houston, TX 77204-0931
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Xiaohong Chen
Xiaohong Chen
Research Scientist
Composite Engineering and Applications Center (CEAC), and Department of Mechanical Engineering,
University of Houston
, Houston, TX 77204-0931
Search for other works by this author on:
Su Su Wang
Distinguished University Professor
Composite Engineering and Applications Center (CEAC), and Department of Mechanical Engineering,
University of Houston
, Houston, TX 77204-0931
Xiaohong Chen
Research Scientist
Composite Engineering and Applications Center (CEAC), and Department of Mechanical Engineering,
University of Houston
, Houston, TX 77204-0931J. Eng. Mater. Technol. Jan 2006, 128(1): 81-89 (9 pages)
Published Online: July 6, 2005
Article history
Received:
November 2, 2004
Revised:
July 6, 2005
Citation
Wang, S. S., and Chen, X. (July 6, 2005). "Computational Micromechanics for High-Temperature Constitutive Equations of Polymer-Matrix Composites With Oxidation Reaction, Damage, and Degradation." ASME. J. Eng. Mater. Technol. January 2006; 128(1): 81–89. https://doi.org/10.1115/1.2132377
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