Stiffness changes in unidirectional composites caused by crack systems

@inproceedings{Laws1983StiffnessCI,
  title={Stiffness changes in unidirectional composites caused by crack systems},
  author={Norman Laws and George J. Dvorak and M S Hejazi},
  year={1983}
}
Abstract This paper is concerned with the development of constitutive equations for fibrous composites which contain a family of longitudinal slit cracks. The general theory in which the crack length is of the same order as the fiber diameter gives rise to a three-phase model. When the fiber diameter is much smaller than the crack length, we obtain the associated two-phase model. Detailed numerical results are given for selected systems. 

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