Study on the Detection of Defects in Steel Plate Welds with θ Eddy Current Probe

The evaluation of weld defects plays an important role in ensuring the safety equipment, but due to unevenness itself, use conventional eddy current probes detect can be affected by lifting effect, so this paper introduces a new type θ probe for steel plate defects. Firstly, using COMSOL simulation software, model and is constructed, effect changes excitation coil height thickness as well detection on sensitivity fully investigated, optimum size calculated combining results optimisation analysis. Finally, experimental platform built test show that has good suppression caused different width depth seam surface seam.