In order to realise a fast inspection for the steel pipes in high-speed production line, a magnetic flux leakage (MFL) method based on orthogonal magnetisation was proposed for the first time, which only requires an axial linear scanning by a linear motion of pipe at a high speed as
opposed to conventional helical scanning at a low speed. The feasibility and practicability of the approach were verified by the practical application of a high-speed inspection apparatus that was invented. Meanwhile, the analysis of circumferential magnetisation characteristics and optimisation
designs for magnetisers and inspection probes were conducted by finite element methods, which are helpful to the circumferential magnetiser's design. The proposed method in this paper can greatly improve test speed to meet the requirement of rapid productions and can also accomplish fast detection
for the pipes for which it is difficult to have a circumferential self-rotation, such as coiled tubing and square tube.
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MFL (magnetic flux leakage);
Document Type: Research Article
State Key Lab of Digital Manufacturing Equipment & Technology, School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
Publication date: October 1, 2009
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