Acoustic effects on cyclic-tension fatigue of Al-4Cu-lMg alloy by ultrasonic shear wave methods

H. Yamagishi, M. Fukuhara, A. Chiba

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

Abstract

Cyclic-tension fatigue of aluminum alloy, Al-4Cu-1Mg, has been determined by usage of SV wave reflection and SH wave transmission methods. Internal friction measured by SV method begins to increase rapidly from normalized fatigue ratio of about 0.5, showing dominating interaction of movable dislocations with the waves, as viscoelastic effect. Propagation time and logarithmic damping ratio in SH method decrease with increase of the fatigue degree due to shift of residual stress, as acoustoelastic effect. The logarithmic damping ratio shows better correlation with the residual-stress shift than the propagation time because acoustic velocity is considered to be affected significantly by pile up dislocation.

Original languageEnglish
Title of host publicationTMS 2009 - 138th Annual Meeting and Exhibition - Supplemental Proceedings
Pages33-40
Number of pages8
Publication statusPublished - 2009 Oct 5
EventTMS 2009 - 138th Annual Meeting and Exhibition - San Francisco, CA, United States
Duration: 2009 Feb 152009 Feb 19

Publication series

NameTMS Annual Meeting
Volume1

Other

OtherTMS 2009 - 138th Annual Meeting and Exhibition
CountryUnited States
CitySan Francisco, CA
Period09/2/1509/2/19

Keywords

  • Acoustoelasticity
  • Fatigue
  • Nondestructive evaluation
  • Shear wave
  • Viscoelasticity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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    Yamagishi, H., Fukuhara, M., & Chiba, A. (2009). Acoustic effects on cyclic-tension fatigue of Al-4Cu-lMg alloy by ultrasonic shear wave methods. In TMS 2009 - 138th Annual Meeting and Exhibition - Supplemental Proceedings (pp. 33-40). (TMS Annual Meeting; Vol. 1).