Abstract
To study the acoustic emission (AE) characteristics of an aluminum alloy pressure vessel manufactured by use of a friction stir welding (FSW) method, a tubular aluminum alloy pressure vessel containing an incomplete penetration defect was monitored by AE technology during hydraulic blasting testing. The characteristic parameter analysis method and fracture surface morphology observation were used to analyze the AE signal characteristics. The results show that the characteristic parameters of the AE amplitude, signal count, and energy jumped significantly when a large expansion of the defect occurred, and they stayed at a high level with the rise in pressure. AE technology can effectively monitor FSW aluminum alloy pressure vessel incomplete penetration defects and provide early warning. The results of this study are of great relevance to the detection of incomplete penetration defects in FSW aluminum alloy pressure vessels.
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Acknowledgements
The authors thank the Jiangsu Ankao Company for providing the friction stir welded aluminum alloy pressure vessel used in this study, and for their related cooperation.
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Jiang, J., Ye, C., Zhang, Z., Yu, Y. (2019). Acoustic Emission Testing of a Friction Stir Welding Aluminum Alloy Pressure Vessel. In: Shen, G., Zhang, J., Wu, Z. (eds) Advances in Acoustic Emission Technology. WCAE 2017. Springer Proceedings in Physics, vol 218. Springer, Cham. https://doi.org/10.1007/978-3-030-12111-2_32
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DOI: https://doi.org/10.1007/978-3-030-12111-2_32
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