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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wincheski, B. Namkung, M. |
| Copyright Year | 1991 |
| Description | Author affiliation: Analytical Services & Materials Inc., Hampton, VA, USA (Wincheski, B.) |
| Abstract | Detailed experimental investigation and numerical analysis were performed to characterize fatigue cracks in thin aluminum alloys by a low-frequency resonant modal analysis technique. The resonance frequency of plates modes is altered by the presence of fatigue cracks. This frequency shift was analyzed using a finite element approach and the results were compared to experimental data. Acoustic sensors were used to detect the fatigue cracks which were stimulated by standing waves in 0.1-cm aluminum alloy plates. The response of several different sensors to the crack noise was studied, as was the response at higher order modes. It was found that critical crack information can be obtained from the amplitude and phase of the emitted signal with respect to that of the external driving force. |
| Starting Page | 1057 |
| Ending Page | 1060 |
| File Size | 339602 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/ULTSYM.1991.234276 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1991-12-08 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Modal analysis Fatigue Aluminum alloys Resonance Acoustic sensors Numerical analysis Resonant frequency Finite element methods Acoustic signal detection Acoustic noise |
| Content Type | Text |
| Resource Type | Article |
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