Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Effects of Interface Control and Heat-Treatment Temperature on Interlaminar Shear Strength and Mode II Interlaminar Fracture Toughness of Woven C/C Composites
Masaki HOJOTaketoshi YAMAOMototsugu TANAKAShojiro OCHIAINorio IWASHITAYoshihiro SAWADA
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2001 Volume 50 Issue 3Appendix Pages 34-40

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Abstract
The effects of interface control and matrix microstructure on the interlaminar shear strength and mode II interlaminar fracture toughness of 5H satin woven C/C composites were investigated by coating bismaleimide-triazine co-polymer (BT-resin) on the surface of carbon fiber and changing the heat-treatment temperature. Three point short beam flexure tests were carried out for the shear strength. End notched flexure specimens were used for the mode II interlaminar fracture toughness tests. Both the interlaminar strength and toughness decreased by coating BT-resin and increasing HTT from 1600°C to 2500°C. However the influence of the BT-resin coating was much larger for the mode II interlaminar fracture toughness than that for the interlaminar shear strength. This difference of the effect of interface control was discussed on the basis of microscopic observation.
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