钢丝绳断丝缺陷涡流检测方法

设计了一种在钢丝绳内主要感生轴向涡流的新型无损检测探头，为了确认其可行性，采用退化向量位(Ar)有限元法对钢丝绳涡流检测进行了数值模拟。基于仿真结果设计并制作了钢丝绳涡流检测探头，并通过检测带有断丝缺陷的钢丝绳模拟试件和实际钢丝绳验证了其有效性。仿真与实验结果表明，所开发的新型涡流检测探头对钢丝绳断丝缺陷检测非常有效。

ECT Method for Wire Breakage Defects in Wire Ropes

A new type of ECT probe was designed, which mainly induced eddy currents in axial direction of wire ropes. To prove the feasibility, a finite element method code of reduced vector potential formulation (Ar method) was applied to simulate ECT signals due to different defects and probe geometries. Based on the numerical results, an ECT probe was designed and fabricated and the efficiency for inspection of wire ropes was demonstrated through experiments with test-piece of simulated and practical wire ropes. Both the numerical and experimental results reveal that the developed probe can detect the wire breakages in wire ropes efficiently.