Damage, Fatigue, and Failure of Ceramic-Matrix Composites

A Burr; F Hild; FA Leckie

doi:10.1520/STP11878S

SYMPOSIA PAPER Published: 01 January 1997

STP11878S

Damage, Fatigue, and Failure of Ceramic-Matrix Composites

Source

Matrix cracking, interfacial debonding and sliding, fiber breakage and fiber pullout induced loss of stiffness, inelastic strains, hysteresis loops, and crack closure. These mechanisms are analyzed within the framework of continuum mechanics through the introduction of internal variables. Two models that are faithful to the micromechanical analysis are studied. They provide guidance on the choice of the relevant internal variables to describe the mechanical behavior of unidirectional fiber-reinforced composites. Ultimate strength properties of fiber-reinforced composites are derived and compared with results related to localization. Extensions to cyclic load histories are discussed in terms of ultimate strength reached after cycling.

Author Information

Burr, A

Laboratoire de Mécanique et Technologie, ENS de Cachan/CNRS/Université Paris 6, Cachan, France

Hild, F

Laboratoire de Mécanique et Technologie, ENS de Cachan/CNRS/Université Paris 6, Cachan, France

Leckie, FA

College of Engineering, University of California, Santa Barbara, CA

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Details

Developed by Committee: E08

Pages: 83–96

DOI: 10.1520/STP11878S

ISBN-EB: 978-0-8031-5369-1

ISBN-13: 978-0-8031-2473-8

Damage, Fatigue, and Failure of Ceramic-Matrix Composites

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