SYMPOSIA PAPER Published: 01 January 1990
STP25394S

Toughness Models of Whisker-Reinforced Ceramic Matrix Composites

Source

This paper presents a theoretical investigation of the critical strain energy release rate, Gc, of whisker-reinforced ceramic matrix composites. Crack deflection is considered as the major energy dissipation mechanism in fracture. The modeling of crack deflection is conducted based on a determination of the path of advancement of the deflected crack front along whiskers. The knowledge of crack path provides the basis for evaluating the deflection-induced reduction in strain energy release rate. The theoretical predictions are compared with experimental data of silicon-carbide (SiC) whisker-reinforced Al2O3 composites.

Author Information

Chiang, Y-C
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE
Chou, T-W
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE
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Details
Developed by Committee: D30
Pages: 101–115
DOI: 10.1520/STP25394S
ISBN-EB: 978-0-8031-5138-3
ISBN-13: 978-0-8031-1385-5