Experimental study and application of magnetic bridge double-loop main flux detection method

摘要

In this study, to perform online non-destructive testing (NDT) of mine wire rope damage and achieve effective and accurate flaw detection results, a magnetic bridge double-loop main flux detection method was proposed and the testing equipment was developed. The flaw detection magneticfield was simulated using a Maxwell module. The magnetic field intensity distribution and the vector direction were compared and then analysed. The practicality and feasibility of the detection method were verified by field experiments. The results show that the magnetic bridge double-loopmain flux detection method is highly practicable and produces highly accurate test results. The mine wire rope non-destructive flaw detector developed using this method presents a stable detection signal and an obvious damage characteristic signal, which is more consistent with the requirementsof wire rope damage detection under various working conditions. This technology has a wide range of applications.