Paper Title:
Experimental Research on Failure Mechanism of a CVI-Fabricated Ceramic Matrix Composite under Compression
  Abstract

Mechanical tests have been conducted to understand compressive behavior of a plain weave C/SiC composite, especially to investigate the failure mechanism. The stress-strain curves of this composite show linear feature in compression. The specimens fail along a flat plane 13°~15° to the weave plane, running across four typical regions in the bulk: weft bundle, warp/weft interface, warp bundle, and inter-ply. According to the observed fracture route, four basic failure modes are schematically presented. Cracks form and develop in these areas along fiber/matrix interphase or within matrix, depending on the strength competition between interphase and matrix. The fracture mechanism reveals dependence of compress strength on matrix abundance between and within bundles. Based on the failure modes new method for compress strength prediction can be further investigated.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
1841-1844
DOI
10.4028/www.scientific.net/KEM.326-328.1841
Citation
G. Y. Guan, G. Q. Jiao, T. Huang, "Experimental Research on Failure Mechanism of a CVI-Fabricated Ceramic Matrix Composite under Compression", Key Engineering Materials, Vols. 326-328, pp. 1841-1844, 2006
Online since
December 2006
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Price
$32.00
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