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10.3390/s25134094
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Research on Nondestructive Testing Method Based on Magnetic Characteristics of Electron Beam Weld Defects

by
Qiangqiang Cheng
1,*,
Jijun Liu
1,*,
Yisong Wang
2,
Guisuo Xia
2 and
Chunquan Li
3
1
School of Mechanical and Electronic Engineering, Gandong University, Fuzhou 344000, China
2
The Key Laboratory of Nondestructive Testing, Nanchang Hangkong University, Nanchang 330031, China
3
School of Information Engineering, Nanchang University, Nanchang 330031, China
*
Authors to whom correspondence should be addressed.
Sensors 2025, 25(13), 4094; https://doi.org/10.3390/s25134094
Submission received: 25 May 2025 / Revised: 22 June 2025 / Accepted: 26 June 2025 / Published: 30 June 2025
(This article belongs to the Section Physical Sensors)
Versions Notes

Abstract

In view of the problems of poor safety, slow detection speed, and low accuracy of existing nondestructive testing (NDT) technologies, such as X-ray methods and ultrasonic detection in detecting electron beam weld defects in aluminum alloys, this study proposes a weak magnetic NDT method based on the geomagnetic field. Firstly, the finite element analysis method was used to establish a simulation model of aluminum alloy electron beam welding defects, and the distribution characteristics of the magnetic field around weld defects, such as cracks and pores, were obtained. Then, the magnetic anomaly signal at the crack weld was identified by combining the wavelet transform and the least squares method. Finally, experimental tests show that the proposed method can safely, quickly, and accurately detect the defects of aluminum alloy electron beam welds.
Keywords: aluminum alloy; electron beam welding; weak magnetic detection; wavelet transform; finite element analysis aluminum alloy; electron beam welding; weak magnetic detection; wavelet transform; finite element analysis

Share and Cite

MDPI and ACS Style

Cheng, Q.; Liu, J.; Wang, Y.; Xia, G.; Li, C. Research on Nondestructive Testing Method Based on Magnetic Characteristics of Electron Beam Weld Defects. Sensors 2025, 25, 4094. https://doi.org/10.3390/s25134094

AMA Style

Cheng Q, Liu J, Wang Y, Xia G, Li C. Research on Nondestructive Testing Method Based on Magnetic Characteristics of Electron Beam Weld Defects. Sensors. 2025; 25(13):4094. https://doi.org/10.3390/s25134094

Chicago/Turabian Style

Cheng, Qiangqiang, Jijun Liu, Yisong Wang, Guisuo Xia, and Chunquan Li. 2025. "Research on Nondestructive Testing Method Based on Magnetic Characteristics of Electron Beam Weld Defects" Sensors 25, no. 13: 4094. https://doi.org/10.3390/s25134094

APA Style

Cheng, Q., Liu, J., Wang, Y., Xia, G., & Li, C. (2025). Research on Nondestructive Testing Method Based on Magnetic Characteristics of Electron Beam Weld Defects. Sensors, 25(13), 4094. https://doi.org/10.3390/s25134094

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