Acoustic characteristics of fatigued aluminum alloy using ultrasonic shear waves

H. Yamagishi, Mikio Fukuhara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cyclic-tension fatigue of aluminum alloy, Al-4Cu-1Mg, was determined by an analysis of diffracted SH and SV waves, passing through the surface and reflecting the bottom of the specimen, respectively. The internal friction of SV waves begins to increase from fatigue damage ratio(=N/Nf) of 0.5. This suggests increase of movable dislocation. From the analysis of SH waves, the logarithmic damping ratio and the propagation time decreases with increasing of the degree offatigue. Assumedfrom SH wave flux model, the residual stress field applied by cyclic-tension makes the damping ratio and the propagation time decrease. The experimental result correlates well with this theory. These results show that ultrasonic method is useful probe for evaluation of fatigue in aluminum alloy.

Original languageEnglish
Title of host publicationNDT in Progress
Subtitle of host publication4th International Workshop of NDT Experts, Proceedings; European NDT Days in Prague 2007
PublisherBrno University of Technology
Pages233-242
Number of pages10
ISBN (Print)9788021435056
Publication statusPublished - 2007 Jan 1
EventNDT in Progress: 4th International Workshop of NDT Experts; European NDT Days in Prague 2007 - Prague, Czech Republic
Duration: 2007 Nov 52007 Nov 7

Publication series

NameNDT in Progress: 4th International Workshop of NDT Experts, Proceedings; European NDT Days in Prague 2007

Other

OtherNDT in Progress: 4th International Workshop of NDT Experts; European NDT Days in Prague 2007
CountryCzech Republic
CityPrague
Period07/11/507/11/7

Keywords

  • Acoustic characteristic
  • Aluminum alloy
  • Cyclic tension
  • Fatigue
  • Nondestructive inspection

ASJC Scopus subject areas

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

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  • Cite this

    Yamagishi, H., & Fukuhara, M. (2007). Acoustic characteristics of fatigued aluminum alloy using ultrasonic shear waves. In NDT in Progress: 4th International Workshop of NDT Experts, Proceedings; European NDT Days in Prague 2007 (pp. 233-242). (NDT in Progress: 4th International Workshop of NDT Experts, Proceedings; European NDT Days in Prague 2007). Brno University of Technology.