Simulation and optimization of nine-pin probe based on magnetic permeability detection technology
Aiming at the complexity of detection and evaluation of stress concentration and fatigue damage of ferromagnetic components,the parameters of nine pin probe are analyzed.The detection principle of the probe is derived,Taking 45 steel as the research object,in order to improve the detection sensitivity of the system,the main influence parameters of the detection sensor are optimized.The magneto mechanical coupling simulation is carried out by using the statics and magnetostatics module in the ANSYS Workbench platform.The results show that the optimal excitation frequency and the optimal excitation voltage amplitude are related to the number of turns of the excitation coil.Under the determined number of turns of the excitation coil,there are optimal values of the excitation frequency and the excitation voltage to maximize the detection sensitivity.With the increase of tensile stress,the detection signal shows a decreasing trend.The simulation data can provide reference for subsequent design.
magnetic permeability detectionstress concentrationnine-pin probedetection sensitivity
NETL
NSTL
万方数据
维普
