ULTIMATE STRENGTHS OF FIBER-REINFORCED CERAMICS AND METALS

A theory to predict the ultimate tensile strength of fibre-reinforced ceramics (CMCs) is presented. The theory incorporates the statistical nature of the fibre strength and the presence of fibre/matrix sliding, the latter allowing broken fibres to retain some load-carrying capacity, and yields a simple analytic expression for the strength. Comparisons with measurements on a wide range of CMCs indicate that the theory improves considerably on rule-of-mixtures estimates. An extension of the concepts used for CMCs to metal-matrix composites (MMCs) with weak, sliding fibre/matrix interfaces is then proposed, and the resultant predictions for MMC strengths agree well with data on SCS-6/Ti-alloy materials.


Published in:
Composites, 24, 98-102
Year:
1993
ISSN:
0010-4361
Keywords:
Laboratories:




 Record created 2014-11-07, last modified 2018-09-13


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