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Article

Hole-Edge Corrosion Expansion Monitoring Based on Lamb Wave

1
School of Energy and Power Engineering, Beihang University, Beijing 100191, China
2
Collaborative Innovation Centre for Advanced Aero-Engine, Beihang University, Beijing 100191, China
3
School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(11), 1469; https://doi.org/10.3390/met10111469
Received: 2 October 2020 / Revised: 31 October 2020 / Accepted: 2 November 2020 / Published: 4 November 2020
(This article belongs to the Special Issue Localized Corrosion of Metals and Alloys)
Corrosion is a critical issue for engineered metallic components in mechanical and aerospace industries. Due to the complexity of aerospace aluminum alloy structure, corrosion is particularly tend to occur and expand in stress concentration areas, such as the edge of a hole, which causes the overall structure to be more likely to fail. In this paper, a Lamb wave-based active sensing method with improved sensors network was used to detect the hole-edge corrosion expansion. A0 wave packet of Lamb wave is extracted from signals, and two damage factors are used as characteristics of the signals. Probabilistic imaging algorithm is used to imaging and quantify the hole-edge corrosion area. Five corrosion extension tests show that the proposed method can effectively locate and quantify the hole-edge corrosion damage expansion of a single-hole structure; furthermore, the normalized amplitude damage index and phase change damage index can be used to predict hole-edge corrosion expansion effectively. View Full-Text
Keywords: corrosion damage detection; Lamb wave; hole-edge corrosion expansion; damage index; probability imaging algorithm corrosion damage detection; Lamb wave; hole-edge corrosion expansion; damage index; probability imaging algorithm
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MDPI and ACS Style

Wang, X.; Dai, W.; Xu, D.; Zhang, W.; Ran, Y.; Wang, R. Hole-Edge Corrosion Expansion Monitoring Based on Lamb Wave. Metals 2020, 10, 1469. https://doi.org/10.3390/met10111469

AMA Style

Wang X, Dai W, Xu D, Zhang W, Ran Y, Wang R. Hole-Edge Corrosion Expansion Monitoring Based on Lamb Wave. Metals. 2020; 10(11):1469. https://doi.org/10.3390/met10111469

Chicago/Turabian Style

Wang, Xiangyu, Wei Dai, Duo Xu, Weifang Zhang, Yunmeng Ran, and Rongqiao Wang. 2020. "Hole-Edge Corrosion Expansion Monitoring Based on Lamb Wave" Metals 10, no. 11: 1469. https://doi.org/10.3390/met10111469

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