Mirror Constant for Tyranno® Silicon-Titanium-Carbon-Oxygen Fibers Measured in Situ in a Three-Dimensional Woven Silicon Carbide/Silicon Carbide Composite |
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| Authors: | Ian J. Davies Takashi Ishikawa |
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| Affiliation: | Advanced Fibro-Science, Kyoto Institute of Technology, Kyoto 606–8585, Japan;Advanced Composite Center, National Aerospace Laboratory, Mitaka City, Tokyo 181–0015, Japan |
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| Abstract: | The strength, S , of ceramic and glass fibers often can be estimated from fractographic investigation using the fracture mirror radius, r m, and the relationship S = A m/( r m)1/2, where A mis the "mirror constant." The present work estimates the value of A mfor Tyranno® Si-Ti-C-O fibers in situ in a three-dimensional woven SiC/SiC-based composite to be 2.50 ± 0.09 MPa·m1/2. This value is within the range of 2–2.51 MPa·m1/2 previously obtained for nominally similar Nicalon® Si-C-O fibers. |
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| Keywords: | fibers silicon carbide composites |
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