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Investigation of the notch sensitivity of a short fibre reinforced C/SiC

 
: Neubrand, A.; Thielicke, B.; Hirsch, E.

Singh, M. ; American Ceramic Society -ACerS-, Westerville/Ohio:
Fifth International Conference on High Temperature Ceramic Matrix Composites 2004. Proceedings
Westerville: ACerS, 2005
ISBN: 1-57498-219-2
International Conference on High Temperature Ceramic Matrix Composites (HT-CMC) <5, 2004, Seattle/Wash.>
Englisch
Konferenzbeitrag
Fraunhofer IWM ()
CMC; ceramic matrix composites; notch sensitivity; tensile test

Abstract
The notch sensitivity of a short fiber-reinforced C/SiC material was studied by tensile tests with prismatic and different symmetrically notched specimens having identical effective cross section. Within the scatter of the strength values no notch sensitivity of these materials was found. However, an increase of the scatter of strength data was observed when notches were introduced. The lack of no tch sensitivity is attributed to a combination of large pre-existing cracks and effective stress restribution by inelastic mechanisms.

: http://publica.fraunhofer.de/dokumente/N-25282.html