Research on weld defect detection based on eddy current thermal imaging

Huayu Zhang; Zhaoyu Cheng; Haixia Wang; Fengqin Xie

doi:10.1117/12.2625295

12 December 2021 Research on weld defect detection based on eddy current thermal imaging

Huayu Zhang, Zhaoyu Cheng, Haixia Wang, Fengqin Xie

Proceedings Volume 12127, International Conference on Intelligent Equipment and Special Robots (ICIESR 2021); 121272L (2021) https://doi.org/10.1117/12.2625295
Event: International Conference on Intelligent Equipment and Special Robots (ICIESR 2021), 2021, Qingdao, China

Abstract

The stress of weld in pressure vessel is complex and the working conditions are poor. The conventional nondestructive testing methods cannot meet the requirements of weld surface defect detection. In this paper, eddy current pulse thermal imaging method is used to study the detection technology of weld surface defects. The finite element simulation software is used to analyze the electromagnetic induction eddy current and temperature distribution at the weld crack. Build an experimental platform to verify the feasibility of eddy current pulse thermal imaging to detect weld cracks. In order to eliminate the background noise of the thermal image, the detection result adopts the absolute temperature rise method to improve the detection accuracy.

Citation Download Citation

Huayu Zhang, Zhaoyu Cheng, Haixia Wang, and Fengqin Xie "Research on weld defect detection based on eddy current thermal imaging", Proc. SPIE 12127, International Conference on Intelligent Equipment and Special Robots (ICIESR 2021), 121272L (12 December 2021); https://doi.org/10.1117/12.2625295

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