CHARACTERIZATION OF THE CRACK TOUGHNESS BEHAVIOR OF STRUCTURAL STEELS BY THE TEARING MODULUS PARAMETER AND ACOUSTIC EMISSION.

M. A. Khan, Tetsuo Shoji, Hideaki Takahashi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The combination of elastic-plastic fracture mechanics and acoustic emission techniques is used for evaluating the fracture toughness behavior of structural steels. The results show that for certain situations the acoustic emission technique can be used to accurately estimate the J integral at a growing crack and therefore provide predictive information regarding failure in laboratory specimens of different geometries and sizes. The invariance of the normalized J resistance curve is demonstrated for the compact and bend configurations. A simple and realistic test method is proposed for the evaluation of a critical value of the J integral and the tearing modulus parameter in cases in which the scatter is of particular concern. The significance of an extending ductile tear on the structural integrity in terms of tearing modulus and acoustic emission is discussed.

Original languageEnglish
Pages (from-to)3-11
Number of pages9
JournalJournal of Testing and Evaluation
Volume10
Issue number1
DOIs
Publication statusPublished - 1982 Jan 1

ASJC Scopus subject areas

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

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