Thermal shock fracture properties of damage tolerant advanced pore-free SiC

Shinya Matsuda, Manabu Takahashi, Takushi Onoue, Keiji Ogi, Masafumi Matsushita, Nagatoshi Okabe, Hiroaki Ohfuji

Research output: Contribution to journalArticlepeer-review

Abstract

In the present study, quench tests were carried out to characterize the fracture behavior of advanced pore-free SiC with damage tolerance during thermal shock. The residual strength of specimens after the quench tests was also measured. It is found that the critical temperature difference and the decrease in residual strength of this material are larger than those of conventional SiC. This is because the fracture is dominated only by flaw size since the wake zone is not generated during thermal shock with high strain rate. The critical temperature difference as well as the crack propagation is calculated with the aid of the unified theory of thermal shock.

Original languageEnglish
Pages (from-to)1156-1163
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume74
Issue number8
DOIs
Publication statusPublished - 2008 Aug
Externally publishedYes

Keywords

  • Advanced pore-free SiC
  • Critical temperature difference
  • Damage tolerance
  • Griffith's theory
  • Inclusion
  • Residual strength
  • Unified theory of thermal shock

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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