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- Title
Fracture mechanics analysis of debond growth in a single-fiber composite under cyclic loading.
- Authors
Pupurs, A.; Varna, J.
- Abstract
model is developed to analyze the growth of a fiber/matrix debond along a broken fiber interface in a single-fiber composite subjected to tension-tension fatigue. The Paris law expressed in terms of debond growth and strain energy release rates is used. An analytical solution for the Mode II energy release rate G is obtained for long debonds, where the interface crack growth is self-similar. For short debonds, the interface crack interacts with the fiber break, and therefore a FEM modeling in combination with the virtual crack closure technique was performed to calculate the increase in G . Finally, the calculated G dependences are summarized in simple expressions that are used to simulate the debond growth in fatigue. A parametric study of the effect of Paris law parameters on the debond growth is performed.
- Subjects
FRACTURE mechanics; AXIAL loads; COMPOSITE materials; FIBERS; STRAINS &; stresses (Mechanics); MATERIAL fatigue; FINITE element method; SOLUTION (Chemistry); CRYSTAL growth
- Publication
Mechanics of Composite Materials, 2011, Vol 47, Issue 1, p109
- ISSN
0191-5665
- Publication type
Article
- DOI
10.1007/s11029-011-9190-1