In situ quantitative non-destructive evaluation of the welding crack using ultrasonic time of flight of diffraction-echo method

Rui Zhang, Mingxi Wan, Wenwu Cao

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In conjunction of the time-of-flight diffraction method and the pulse-echo method, an in-situ ultrasonic method for quantitative non-destructive evaluation of the welding crack's position and sizing is presented. The deficiency of the time-of-flight diffraction method, the poor sensitivity for near-surface crack, is improved by pulse-echo method, and the demand of the x-axes scan can be omitted. The reason for the error, the factors which influence the resolution and accuracy of the method are analyzed. Using a pair of broadband longitudinal wave with 15 MHz center frequency transducers. The position of a crack, with the size of 2 mm of the steel welding plate can be characterized accurately.

Original languageEnglish (US)
Pages (from-to)54-57
Number of pages4
JournalJixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
Volume36
Issue number5
DOIs
StatePublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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