Abstract
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 language | English |
|---|---|
| Title of host publication | Structural Health Monitoring - 8th Asia Pacific Workshop on Structural Health Monitoring, 8APWSHM 2020, proceedings |
| Editors | N. Rajic, M. Veidt, A. Mita, N. Takeda, W.K. Chiu |
| Publisher | Association of American Publishers |
| Pages | 95-104 |
| Number of pages | 10 |
| ISBN (Print) | 9781644901304 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | Asia-Pacific Workshop on Structural Health Monitoring 2020 - Cairns, Australia Duration: 9 Dec 2020 → 11 Dec 2020 Conference number: 8th https://www.monash.edu/engineering/shm (Website) |
Publication series
| Name | Materials Research Proceedings |
|---|---|
| Volume | 18 |
| ISSN (Print) | 2474-3941 |
| ISSN (Electronic) | 2474-395X |
Conference
| Conference | Asia-Pacific Workshop on Structural Health Monitoring 2020 |
|---|---|
| Abbreviated title | APWSHM 2020 |
| Country/Territory | Australia |
| City | Cairns |
| Period | 9/12/20 → 11/12/20 |
| Internet address |
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Keywords
- Acoustic Emission
- Fatigue Crack
- Lamb Wave
- Wave Propagation