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Laser ultrasonic technique applied to inspect fatigue crack

  • Yang Zhao*
  • , Jian Ma
  • , Shuai Liu
  • , Rui Guo
  • , Jiangfeng Song
  • , Zhongqing Qing
  • *Corresponding author for this work
  • Qilu University of Technology
  • Center of NDT Engineer and Technique in Shandong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The present paper describes a study of the detection and monitoring of fatigue crack growth using laser ultrasonic technique. Rayleigh wave propagating along material surface allow in principle for the efficient non-destructive testing of surface-breaking fatigue crack and subsurface crack. Artificial cracks with various width and depth were produced on the aluminum plates, which were used to simulate the monitoring of fatigue crack. Experiments results shows fatigue crack detection and growth monitoring is possible for laser ultrasonic technique. The sensitivity and repeatability of the measurements were ascertained, having the potential for fatigue crack detection and easy to access fastener locations. Good agreement was observed between the experimental results and theoretical prediction.

Original languageEnglish
Title of host publicationFENDT 2013 - Proceedings of 2013 Far East Forum on Nondestructive Evaluation/Testing
Subtitle of host publicationNew Technology and Application
Pages205-208
Number of pages4
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2013 - Ji'nan, China
Duration: 17 Jun 201320 Jun 2013

Publication series

NameFENDT 2013 - Proceedings of 2013 Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application

Conference

Conference2013 Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2013
Country/TerritoryChina
CityJi'nan
Period17/06/1320/06/13

Keywords

  • EMAT
  • Nondestructive testing
  • fatigue crack
  • laser ultrasonic

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