TY - JOUR
T1 - Thermo-oxidative behavior of high-temperature PMR-15 resin and composites
AU - Tandon, G. P.
AU - Pochiraju, K. V.
AU - Schoeppner, G. A.
PY - 2008/12/20
Y1 - 2008/12/20
N2 - The present study examines the thermo-oxidative behavior of high-temperature polymer matrix composite materials. Thermo-oxidative aging in neat resin is simulated with a diffusion-reaction model in which temperature, oxygen concentration and weight loss effects are considered. The thermo-oxidative behavior of the composite, on the other hand, is significantly different from that of the constituents as the composite microstructure, including the fiber/matrix interphase/interface, introduces anisotropy in the diffusion and oxidation behavior. Unit cell analyses are carried out using three-dimensional finite element analysis of repeated volume elements representing the fiber, matrix and interphase regions, and the resin oxidation model. Parametric studies illustrating the anisotropy in the oxidative region growth and the effect of fiber and interphase diffusivity on the oxidation layer growth are discussed. It is suggested that fiber-matrix debonding could provide additional diffusion paths to explain the extent of observed anisotropic oxidation growth.
AB - The present study examines the thermo-oxidative behavior of high-temperature polymer matrix composite materials. Thermo-oxidative aging in neat resin is simulated with a diffusion-reaction model in which temperature, oxygen concentration and weight loss effects are considered. The thermo-oxidative behavior of the composite, on the other hand, is significantly different from that of the constituents as the composite microstructure, including the fiber/matrix interphase/interface, introduces anisotropy in the diffusion and oxidation behavior. Unit cell analyses are carried out using three-dimensional finite element analysis of repeated volume elements representing the fiber, matrix and interphase regions, and the resin oxidation model. Parametric studies illustrating the anisotropy in the oxidative region growth and the effect of fiber and interphase diffusivity on the oxidation layer growth are discussed. It is suggested that fiber-matrix debonding could provide additional diffusion paths to explain the extent of observed anisotropic oxidation growth.
KW - Aging
KW - Anisotropic
KW - Damage
KW - Diffusion
KW - Reaction
KW - Thermo-oxidation
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UR - http://www.scopus.com/inward/citedby.url?scp=54349113045&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2007.09.103
DO - 10.1016/j.msea.2007.09.103
M3 - Article
AN - SCOPUS:54349113045
SN - 0921-5093
VL - 498
SP - 150
EP - 161
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1-2
ER -