TY - JOUR
T1 - Influence of mode ratio and hygrothermal condition on the delamination toughness of a thermoplastic particulate interlayered carbon/epoxy composite
AU - Davidson, B. D.
AU - Kumar, M.
AU - Soffa, M. A.
N1 - Funding Information:
This work was sponsored by the NASA Constellation University Institutes Project under Grant NCC3-989, Claudia Meyer, Project Manager.
PY - 2009/1
Y1 - 2009/1
N2 - Double cantilever beam, end-notched flexure and single leg bending tests were used to determine the effects of temperature and moisture on the toughness of a thermoplastic particulate-toughened carbon/epoxy composite. Tests were performed on both dry and moisture-saturated specimens at temperatures of -43 °C, 21 °C and 98 °C, and on dry specimens only at 125 °C. In-situ observations and post-test scanning electron microscopy showed increasing matrix ductility with increasing temperature and moisture content. This correlated to an increase in the mode I and a decrease in the mode II toughness. The mixed-mode toughness data and fracture surface morphologies displayed a blend of the mode I and mode II behaviors.
AB - Double cantilever beam, end-notched flexure and single leg bending tests were used to determine the effects of temperature and moisture on the toughness of a thermoplastic particulate-toughened carbon/epoxy composite. Tests were performed on both dry and moisture-saturated specimens at temperatures of -43 °C, 21 °C and 98 °C, and on dry specimens only at 125 °C. In-situ observations and post-test scanning electron microscopy showed increasing matrix ductility with increasing temperature and moisture content. This correlated to an increase in the mode I and a decrease in the mode II toughness. The mixed-mode toughness data and fracture surface morphologies displayed a blend of the mode I and mode II behaviors.
KW - A. Polymer-matrix composites
KW - B. Delamination
KW - B. Environmental degradation
KW - B. Interface/interphase
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U2 - 10.1016/j.compositesa.2008.10.006
DO - 10.1016/j.compositesa.2008.10.006
M3 - Article
AN - SCOPUS:57649177434
SN - 1359-835X
VL - 40
SP - 67
EP - 79
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
IS - 1
ER -