TY - JOUR
T1 - Oxidation-induced damage evolution in a unidirectional polymer matrix composite
AU - Liang, Jianyong
AU - Pochiraju, Kishore V.
N1 - Publisher Copyright:
© The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.
PY - 2015/5/9
Y1 - 2015/5/9
N2 - Long-term degradation and failure in high-temperature polymer matrix composites are driven by chemical changes due to oxidation reactions and damage evolution. In this paper, we present a methodology for simulating oxidation-induced damage in a unidirectional composite. This approach explicitly models the time-dependent growth of oxidation layers and the evolution of discrete cracking in a homogenized representation of the composite. Long-term isothermal aging is simulated with high-resolution tracking of morphological changes and damage evolution. An element-free Galerkin method is used to simulate the oxidation layer growth, and the extended finite element method is used for computing the stress fields and predicting damage. The developed model captures both oxidation and damage growth in the unidirectional lamina through long periods of oxidative aging. The model predictions correlate well with the experimental results for a carbon/polyimide composite system.
AB - Long-term degradation and failure in high-temperature polymer matrix composites are driven by chemical changes due to oxidation reactions and damage evolution. In this paper, we present a methodology for simulating oxidation-induced damage in a unidirectional composite. This approach explicitly models the time-dependent growth of oxidation layers and the evolution of discrete cracking in a homogenized representation of the composite. Long-term isothermal aging is simulated with high-resolution tracking of morphological changes and damage evolution. An element-free Galerkin method is used to simulate the oxidation layer growth, and the extended finite element method is used for computing the stress fields and predicting damage. The developed model captures both oxidation and damage growth in the unidirectional lamina through long periods of oxidative aging. The model predictions correlate well with the experimental results for a carbon/polyimide composite system.
KW - Oxidation growth
KW - damage evolution
KW - extended finite element method
KW - failure mode
KW - oxidation-mechanics-damage model
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U2 - 10.1177/0021998314534705
DO - 10.1177/0021998314534705
M3 - Article
AN - SCOPUS:84928950768
SN - 0021-9983
VL - 49
SP - 1393
EP - 1406
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 11
ER -