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Fracture Mechanisms in SiC-Whisker Reinforced Alumina

Published online by Cambridge University Press:  22 February 2011

Christophe H. Boulanger ,
Yih-Cherng Chiang ,
Azar P. Majidi  and
Tsu-Wei Chou
Christophe H. Boulanger
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE 19716
Yih-Cherng Chiang
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE 19716
Azar P. Majidi
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE 19716
Tsu-Wei Chou
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE 19716
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Abstract

The fracture mechanisms involved in the toughening of alumina by whisker reinforcement are studied at room temperature. The fracture toughness of a hot pressed SiC-whisker/alumina composite is measured and good agreement is found between the experimental data and a model that takes into account the effects of crack deflection and whisker pullout mechanisms. From the model, it is seen that the role of whisker pullout is negligible compared to that of crack deflection.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 120: Symposium G – High-Temperature/High-Performance Composites , 1988 , 279
Copyright
Copyright © Materials Research Society 1988

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References

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