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Role of interface properties on the toughness of brittle matrix composites reinforced with ductile fibers

Published online by Cambridge University Press:  31 January 2011

H.E. Dève  and
S. Schmauder
H.E. Dève*
Affiliation:
3M Metal Matrix Composite Group, 3M Center, Bldg. 60-1N-01, St. Paul, Minnesota 55144-1000
S. Schmauder*
Affiliation:
Max-Planck-Institut für Metallforschung, Institüt für Werkstoffwissenschaft, D-7000 Stuttgart 1, Germany
*
a)This work was completed while the authors were with the Materials Department at the University of California, Santa Barbara.
a)This work was completed while the authors were with the Materials Department at the University of California, Santa Barbara.
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Abstract

The incorporation of ductile fibers in brittle matrices can lead to a significant increase in fracture resistance. The increase in toughness that derives from crack bridging is governed by the properties of the matrix/fiber interface and the ductility of the fibers. The current study addresses the role of interface sliding stress on the toughness of brittle composites reinforced with ductile fibers. The debond length is explicitly related to the interface sliding stress and the properties of the fiber. It is then incorporated into a geometrical model to simulate the bridging tractions versus crack opening under condition of continuous debonding. The implications on the effect of interfaces on the resistance curve are discussed.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 11 , November 1992 , pp. 3132 - 3138
Copyright
Copyright © Materials Research Society 1992

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