Evaluation of microscopic strength distribution in rock using acoustic emission measurements

Toru Takahashi, Kazushi Sato, Toshiyuki Hashida, Hideaki Takahashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A method for determining microscopic strength distribution in rocks using an acoustic emission (AE) technique is proposed. The principle of the method is based on a statistical model for fracture analysis of quasi-brittle materials which has been developed by McClintock et al. The statistical model assumes an inhomogeneous strength distribution of the material which is dictated by the fracture probability with Weibull distribution. Firstly, the principle of the statistical method is verified by performing numerical simulations using a network model. Secondly, the method is applied to experimental results of uniaxial tension tests and AE measurements conducted on granite and marble. It is demonstrated that the numerical and experimental results support the validity of the proposed method for determining the microscopic strength distribution in rocks.

Original languageEnglish
Pages (from-to)908-913
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume63
Issue number609
DOIs
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

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

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