Multi-Axial Failure of Ceramic Matrix Composite Fiber Tows

Blacklock, Matthew and Hayhurst, D. R. (2011) Multi-Axial Failure of Ceramic Matrix Composite Fiber Tows. Journal of Applied Mechanics, 78 (3). 031017. ISSN 0021-8936

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This paper considers the multi-axial stress-strain-failure response of two commercially woven ceramic matrix composites. The different failure mechanisms of uni-axially stressed tows and woven composites are addressed. A model is postulated in which the local transverse and shear stressing, arising from the weave, instantaneously deactivate wake debonding and fiber pullout and initiates dynamic fiber failure; hence, triggering catastrophic failure of the axially stressed region of the tow. The model is shown to predict experimentally measured stress-strain-failure results for the woven composites considered. Simple stress-strain-failure models are also proposed for tows subjected to axial-transverse and axial-shear loadings, but due to the lack of experimental data they have not been validated.

Item Type: Article
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Becky Skoyles
Date Deposited: 11 Jul 2018 11:31
Last Modified: 11 Oct 2019 20:00

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