Simplified NDE of a closed vertical crack using ultrasonics

M. Saka, T. Uchikawa

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Ultrasonic testing using a normally incident longitudinal wave is used for sizing a closed crack. The crack exists vertically on the back-wall of the inspected plate. In order to evaluate the closed crack, the relationship between the first back-wall echo height and the crack depth for an open crack as the basis for evaluating the closed crack is determined experimentally and is introduced to the analysis of echo height for the closed crack. The unknown parameters in the evaluation of the closed crack, such as crack depth and the stress closing the crack, are determined by comparing the first back-wall echo height obtained through both analysis and experiment on the closed crack.

Original languageEnglish
Pages (from-to)289-296
Number of pages8
JournalNDT and E International
Issue number5
Publication statusPublished - 1995


  • closed crack
  • inverse problem
  • ultrasonic inspection

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


Dive into the research topics of 'Simplified NDE of a closed vertical crack using ultrasonics'. Together they form a unique fingerprint.

Cite this