Peridynamic modeling of thermo-oxidative damage evolution in a composite lamina

Oterkus, Selda and Madenci, Erdogan; (2017) Peridynamic modeling of thermo-oxidative damage evolution in a composite lamina. In: 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. AIAA SciTech Forum . American Institute of Aeronautics and Astronautics, USA. ISBN 9781624104534 (

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Surface oxidation degrades the durability of polymer marix composites operating at high temperatures due to the presence of strong coupling between the thermal oxidation and structural damage evolution. The mechanism of oxidation in polymer matrix composites leads to shrinkage and damage growth. The thermo-oxidative behavior of composites introduces changes in diffusion behavior and mechanical response of the material. This study presents the derivation of peridynamic formulation for the thermo-oxidative behavior of the polymer matrix composites. As a demonstration purposes, isothermal aging of a unidirectional composite lamina is presented by using peridynamics. Oxidation contributed to the damage growth and its propagation.