Acoustic emission of metallic specimen with surface defect during fatigue crack growth

X. Yao, B. S. Vien, N. Rajic, L. R.F. Rose, C. H.J. Davies, W. K. Chiu

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1 Citation (Scopus)


Acoustic emission is defined as the phenomena whereby transient elastic waves are generated by the rapid release of localized sources within a material. During fatigue crack growth, the formation of new crack surfaces is associated with a sudden release of energy, which constitutes acoustic sources for acoustic emission. This paper investigates the acoustic emission signature arising from fatigue test of a metallic specimen under tensile fatigue test. In this experimental study, dog-bone aluminium alloy specimen with a surface defect was fatigued to failure. It is found that the acoustic emission characteristics are different during the propagation of surface crack, because the source is changing. The results provide a useful guide in identifying source origin based on the characteristics of the acoustic emission waveform.

Original languageEnglish
Title of host publicationStructural Health Monitoring - 8th Asia Pacific Workshop on Structural Health Monitoring, 8APWSHM 2020, proceedings
EditorsN. Rajic, M. Veidt, A. Mita, N. Takeda, W.K. Chiu
PublisherAssociation of American Publishers
Number of pages10
ISBN (Print)9781644901304
Publication statusPublished - 2021
EventAsia-Pacific Workshop on Structural Health Monitoring 2020 - Cairns, Australia
Duration: 9 Dec 202011 Dec 2020
Conference number: 8th (Website)

Publication series

NameMaterials Research Proceedings
ISSN (Print)2474-3941
ISSN (Electronic)2474-395X


ConferenceAsia-Pacific Workshop on Structural Health Monitoring 2020
Abbreviated titleAPWSHM 2020
Internet address


  • Acoustic Emission
  • Fatigue Crack
  • Lamb Wave
  • Wave Propagation

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