Fatigue behavior of 2D laminate C/C composites at room temperature

Fatigue behavior was examined for three kinds of carbon fiber reinforced carbon matrix composites (C/Cs). The fatigue-tested materials included unidirectionally reinforced (UD), symmetric cross-ply laminated (CP) and symmetric quasi-isotropically laminated (QI) C/Cs. The fatigue fracture behavior of...

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Bibliographic Details
Published in:Composites science and technology 2005-06, Vol.65 (7), p.1044-1051
Main Authors: Goto, Ken, Furukawa, Yuko, Hatta, Hiroshi, Kogo, Yasuo
Format: Article
Language:English
Subjects:
A. Carbon fibres
Applied sciences
B. Fatigue
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Fiber/matrix interface
Structural ceramics
Technical ceramics
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Summary:Fatigue behavior was examined for three kinds of carbon fiber reinforced carbon matrix composites (C/Cs). The fatigue-tested materials included unidirectionally reinforced (UD), symmetric cross-ply laminated (CP) and symmetric quasi-isotropically laminated (QI) C/Cs. The fatigue fracture behavior of the C/Cs was classified into three regions based on applied strain, irrespective of the C/C types. In high applied strain region, fatigue fracture occurred in the same manner as in the static tensile tests. In the second region, where the applied stress is up to the fatigue limit, the strength of the C/Cs decreased slightly due to the degradation of the fiber strength caused by frictional wear along the fiber/matrix interface. The third region was at lower applied strain than the fatigue limit, in which no fatigue fracture occurred and the residual strength was recovered and sometimes enhanced due to damage at the fiber/matrix interface.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2004.09.031