Abstract
To study the acoustic emission (AE) signal characteristics of aluminum alloy pressure vessels, a small aluminum pressure vessel containing a groove defect was tested using AE methods. The conventional parameter-based approach and signal-based analysis were combined to analyze recorded AE signals. The results show that AE signals induced by residual stress relief have lower amplitude and frequency, and joint cracks and expansion can produce a large number of high-energy and high-amplitude signals, with peak frequencies mainly in the range of 100–300 kHz. The quantity of location points is less, mainly caused by crack propagation, but accurate location can be determined. The research results have certain reference value for AE testing of aluminum alloy pressure vessels.
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Acknowledgment
The present study was partly performed with the help of Professor Shen Gongtian and Miss Zhang Chunjiao of China Special Equipment Inspection and Research Institute. The authors thank them for their guidance and suggestions for the research work.
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Jiang, J., Ye, C., Zhang, Z., Yu, Y. (2017). Acoustic Emission Testing on Aluminum Alloy Pressure Vessels. In: Shen, G., Wu, Z., Zhang, J. (eds) Advances in Acoustic Emission Technology. Springer Proceedings in Physics, vol 179. Springer, Cham. https://doi.org/10.1007/978-3-319-29052-2_27
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DOI: https://doi.org/10.1007/978-3-319-29052-2_27
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