Fracture mechanics of fiber-reinforced brittle-matrix composite materials
The fracture mechanics model of matrix cracking in uniaxially fiber-reinforced brittle matrix composites depends significantly on the load transfer mechanism between the fiber and the matrix. A model is developed theoretically under uniform tension in the direction parallel to the fibers and normal to the crack plane. It is assumed that the fibers are strong enough to remain intact when the matrix cracks. The different load transfer mechanisms are all based on a typical cylindrical composite cell. All load transfer mechanisms invoke equilibrium equations and continuity conditions in both the sliding and nonsliding regions. The methodology of analytical solution of the stress distribution in both the fiber and the matrix differ from other methods currently available in the literature. The fracture mechanics is described by micromechanics and macromechanics concepts, such as crack opening displacement and stress intensity factor. Parametric studies on the effects of material properties of the fiber and matrix are conducted to indicate the various influence of the properties.
- Research Organization:
- Florida Inst. of Tech., Melbourne, FL (United States)
- OSTI ID:
- 5415369
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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