INTERLAMINAR FRACTURE-TOUGHNESS OF CFRP INFLUENCED BY FIBER SURFACE-TREATMENT .1. EXPERIMENTAL RESULTS

被引:98
作者
ALBERTSEN, H
IVENS, J
PETERS, P
WEVERS, M
VERPOEST, I
机构
[1] KATHOLIEKE UNIV LEUVEN,DEPT MET & MAT ENGN,LOUVAIN,BELGIUM
[2] DLR,INST MAT RES,W-5000 COLOGNE,GERMANY
关键词
CARBON FIBER; THERMOSET; THERMOPLASTIC; INTERFACE; INTERLAMINAR FRACTURE TOUGHNESS; FIBER SURFACE TREATMENT;
D O I
10.1016/0266-3538(95)00048-8
中图分类号
TB33 [复合材料];
学科分类号
摘要
The bond between a fibre and the matrix is very important for the mechanical behaviour of CFRP. The quality of the fibre/matrix interface will influence the initiation and development of damage. This is certainly true for interlaminar fracture toughness. The present study is focused in the influence of the interface properties on the fracture toughness of CFRP. Carbon fibres with four different wet oxidative surface treatment levels have been investigated The fibres were embedded in a thermoset resin and in a thermoplastic system. Mode I, mode II and mixed-mode tests were performed to determine critical strain-energy release rates. Results show an important increase in the fracture toughness initiation value with increasing fibre surface treatment level. For tests dominated by mode I loading, however, the propagation value can reach a maximum at intermediate treatment levels as a consequence of fibre bridging effects.
引用
收藏
页码:133 / 145
页数:13
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