Evaluation of Stress Intensity Factor for a 3-D Surface Crack by Means of A. C. Potential Drop Technique

Masumi Saka, Takashi Kaneko, Hiroyuki AbÉ

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A method for applying a. c. potential drop technique is proposed to evaluate the stress intensity factor K1 for a 3-D surface crack. The effect of load on a. c. potential drop measured on the surface of a specimen which contains a 3-D surface crack has been utilized to evaluate K1 for the crack. The analysis of the inverse problem has been done for determining K1, where the measurements of the change in potential drop due to the change in load applied to the specimen have been compared with theoretical computations which include K1 as an unknown quantity. The measurements have been done under three-point bending for a semielliptical surface crack introduced by fatigue. The evaluated value of K1 based on the present method has been compared with the solutions of elastic analyses reported so far, and the present method has been verified.

Original languageEnglish
Pages (from-to)2222-2229
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume57
Issue number541
DOIs
Publication statusPublished - 1991 Jan 1

Keywords

  • A. C. Potential Drop Technique
  • Computational Mechanics
  • Fracture Mechanics
  • Inverse Problem
  • Stress Intensity Factor

ASJC Scopus subject areas

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

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