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2021 | OriginalPaper | Buchkapitel

5. Fatigue Damage and Fracture of Ceramic-Matrix Composites Subjected to Stochastic Loading

verfasst von : Dr. Longbiao Li

Erschienen in: Damage and Fracture of Ceramic-Matrix Composites Under Stochastic Loading

Verlag: Springer Singapore

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Abstract

In this chapter, a micromechanical fatigue limit stress model of fiber-reinforced ceramic-matrix composites (CMCs) subjected to stochastic overloading stress is developed. Fatigue limit stress of different C/SiC composites (i.e., unidirectional (UD), cross-ply (CP), 2D, 2.5D, and 3D C/SiC) is predicted based on the micromechanical fatigue damage models and fatigue failure criterion. Under cyclic fatigue loading, the fatigue damage and fracture under stochastic overloading stress at a different applied cycle number are characterized using two parameters of fatigue life decreasing rate and broken fibers fraction. Relationships between fatigue life decreasing rate, stochastic overloading stress, corresponding occurrence applied cycle number, and broken fibers fraction are analyzed.

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Titel: Fatigue Damage and Fracture of Ceramic-Matrix Composites Subjected to Stochastic Loading
verfasst von: Dr. Longbiao Li
Verlag: Springer Singapore
Buch: Damage and Fracture of Ceramic-Matrix Composites Under Stochastic Loading
Print ISBN: 978-981-16-2140-6

Electronic ISBN: 978-981-16-2141-3

Copyright-Jahr: 2021
DOI: https://doi.org/10.1007/978-981-16-2141-3_5

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