Fracture toughness of a crystalline silicon carbide fiber (tyranno-SA3®)

Kohei Morishita, Shojiro Ochiai, Hiroshi Okuda, Toshihiro Inshikawa, Mitsuhiko Sato, Tadanobu Inoue

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


The fracture toughness of a crystalline silicon carbide fiber, Tyranno-SA®, was determined by introducing an artificial notch directly into the fiber test specimens using a focused-ion (Ga +) beam. The relation between fracture strength and notch size was determined experimentally, while the relation among the notch size, fiber diameter, applied stress at infinity, and stress intensity factor was analyzed by the finite element method. By applying the analyzed result to the experimental results, the fracture toughness of the fiber was determined to be 2.7 ±0.4 MPa√m.

Original languageEnglish
Pages (from-to)2571-2576
Number of pages6
JournalJournal of the American Ceramic Society
Issue number8
Publication statusPublished - Aug 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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