Crack Detection of Metal Pipeline by Using Multi-direction  Field Signature Method

HE Xiao-ming; ZHOU Yong-jie; LIU Run; GAN Fang-ji

doi:10.11988/ckyyb.202106512022

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Journal of Changjiang River Scientific Research Institute ›› 2022, Vol. 39 ›› Issue (11) : 154-156. DOI: 10.11988/ckyyb.202106512022

INSTRUMENTATION DEVELOPMENT AND TESTING TECHNIQUES

Crack Detection of Metal Pipeline by Using Multi-direction Field Signature Method

HE Xiao-ming¹, ZHOU Yong-jie¹, LIU Run¹, GAN Fang-ji²

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Abstract

Field signature method (FSM) is a non-destructive testing technology widely used in metal pipeline defect detection. It can detect corrosion defects with high accuracy;but its detection capability for crack defects with higher risk coefficient is insufficient. In this paper,a multi-direction field signature method (MDFSM) is proposed. By applying multi-direction excitation to the tested pipeline,crack defects at more angles can be effectively detected,and the strongest set of signals is selected to solve the crack depth. Simulation and experiments show that the proposed MDFSM significantly improves the accuracy of detecting crack depth.

Key words

defect detection / metal pipeline / corrosion / crack / MDFSM / excitation current

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HE Xiao-ming, ZHOU Yong-jie, LIU Run, GAN Fang-ji. Crack Detection of Metal Pipeline by Using Multi-direction Field Signature Method[J]. Journal of Changjiang River Scientific Research Institute. 2022, 39(11): 154-156 https://doi.org/10.11988/ckyyb.202106512022

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