Effects of excitation system on the performance of magnetic-flux-leakage-type non-destructive testing

摘要

Highlights?The effects of the structural design and parameters of the excitation system on performance of MFL testing was investigated using parameterized FE.?A parameter optimization method, combining parameterized FE with genetic algorithm, was proposed to optimize the dimensions of the yoke.?A MFL sensor with a preferred structural design and preferred parameters of the excitation system was proposed.?The superior performance of the MFL sensor with the preferred excitation system was validated experimentally.AbstractThe effects of excitation system on the performance of magnetic flux leakage (MFL)-type non-destructive testing were investigated. The investigation employed parameterized finite element analysis of the MFL testing of ferromagnetic samples to reveal the effects of the structural design and parameters of the excitation system, including the geometry and dimensions of the yoke, lengths a