Material-Dependent Sensitivity Degradation of Magnetoelastic Torque Transducers Under Cyclic Torsional Stress

Magnetoelastic (ME) torque transducers are used in numerous applications spanning automotive, commercial, and aerospace sectors. During calibration, these transducers typically require the application of full-load torque cycles to stabilize the transducer transfer function (TF) due to cyclic stress-induced changes in magnetization. This study investigates the development of mathematical models that can better quantify transducer stability and the impact of stresses beyond the calibration range. The proposed models provide a framework for predicting changes in the TF under cyclic loading, enabling the optimization of magnetization and calibration processes to improve transducer reliability and performance.