Ultrasonic NDE of closed cracks- sizing and evaluation of crack opening stress intensity factor under a No load condition

M. Saka, M. A.Salam Akanda, S. Reaz Ahmed

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

A new ultrasonic evaluation method has been developed for the determination of crack opening stress intensity factor of small fatigue cracks under no load condition. The crack depth and the closure stress of an unknown closed crack are determined simultaneously from the measured shear wave response by solving an inverse problem, where a new modeling of the crack closure is used. From the evaluated crack depth and the crack closure stress, the crack opening stress intensity factor is determined. The method developed is proved to be a powerful tool for reliable nondestructive evaluation of small closed cracks under a no load condition.

Original languageEnglish
Pages (from-to)1277-1284
Number of pages8
JournalKey Engineering Materials
Volume270-273
Issue numberII
Publication statusPublished - 2004 Jan 1
EventProceedings of the 11th Asian Pacific Conference on Nondestructive Testing - Jeju Island, Korea, Republic of
Duration: 2003 Nov 32003 Nov 7

Keywords

  • Inverse Analysis
  • Small Closed Crack
  • Stress Intensity Factor
  • Ultrasonic NDE

ASJC Scopus subject areas

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

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