Effects of Specimen Size and Cyclic Load on the Tearing Instability Characteristic of Low Alloy Steels

Kotoji Ando, S. Saka, Masaya Horinq, Hiroyuki Kotoku

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Fracture tests of low alloy steels based on the J-integral have been performed on compact tension and three point-bend specimens to investigate the effect of specimen size on the tearing modulus. Also, tearing instability tests have been conducted to clarify the effects of specimen size, fracture toughness and cyclic load on the tearing instability characteristic. It has been shown that the specimen size has little effect on the tearing modulus up to ω⇌2, but it has a notable effect on the critical value of the J-integral at the instability point (JInst). For very tough material, JInst depends on the testing compliance, but for not so tough material, it has little effect on JInst. The value of JInst under cyclic loading is found to be consistent with JInst under the monotonic load condition.

Original languageEnglish
Pages (from-to)464-471
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume52
Issue number474
DOIs
Publication statusPublished - 1986

Keywords

  • Compliance Effect
  • Cyclic Load
  • Fracture
  • J-Integral
  • Size Effect
  • Tearing Instability
  • Tearing Modulus
  • Toughness Level

ASJC Scopus subject areas

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

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