Multi-axial failure of ceramic matrix composite fiber tows

M. Blacklock, D. R. Hayhurst

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number031017
JournalJournal of Applied Mechanics, Transactions ASME
Volume78
Issue number3
Early online date16 Feb 2011
DOIs
Publication statusPublished - 1 Mar 2011
Externally publishedYes

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