Statistical Theory of Strength of Laminated Composites II

Author:

Scop Peter M.1,Argon Ali S.2

Affiliation:

1. Norton Research Corporation Cambridge, Massachusetts

2. Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, Massachusetts

Abstract

The statistical theory for fracture of laminated composites devel oped previously has been extended to take account of stress enhance ment in neighboring elements around primary fractures. The results show that: a) the effective stress enhancement is less for an elastic matrix than for a rigid-plastic matrix, b) for constant length the strength of the composites rise with increasing numbers of parallel reinforcing elements for all flaw distributions and for both plastic and elastic matrices; c) for the same flaw distribution function the composite with the elastic matrix is stronger than the one with the plastic matrix. Experimental results in support of the theory, on boron sheet com posites and glass fiber tapes are reported.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Reference9 articles.

1. P.M. Scop and A.S. Argon, "Statistical Theory of the Tensile Strength of Laminates", Advanced Fibrous Reinforced Composites, Society of the Aerospace Materials and Processing Engineers, San Diego, California , 1966. p. G-21,

2. Statistical Theory of Strength of Laminated Composites

3. Local Stress Concentrations in Imperfect Filamentary Composite Materials

4. F.A. McClintock and A.S. Argon, "Mechanical Behavior of Materials", Addison-Wesley , Reading, Mass. (1966), pp. 504-510.

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