期刊
COMPOSITES PART B-ENGINEERING
卷 53, 期 -, 页码 169-178出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.03.042
关键词
Fibres; Debonding; Fracture; Stress-intensity factor
资金
- Italian Ministry for University and Technological and Scientific Research (MIUR)
The mechanical behaviour of the fibre-reinforced composites depends on the properties of the matrix, the fibres and their reciprocal bonding. Degrading effects occurring in such materials under service - such as matrix-fibre detaching (debonding), fibre breaking, matrix cracking - must be taken into account in the safety assessments. In the present paper, the fibre-matrix debonding phenomenon at the fibre-matrix interface is examined through fracture mechanics concepts, since a geometric discontinuity arises at the edge of the debonded zone (between two dissimilar materials) producing a stress singularity. The mixed mode stress-intensity factors are determined, and the effects of the geometrical and mechanical parameters related to matrix and fibres are discussed. (C) 2013 Elsevier Ltd. All rights reserved.
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