Summarizes several magnetization methods of detecting steel wires,introduces the theory of magnetic bridge,and gains the structure size of the excitation device through calculating and experiment.

• 简述了钢丝绳无损检测的几种磁化方式,介绍了磁桥路检测法的原理,并结合理论计算和试验得出了钢丝绳截面积变化检测励磁器的结构尺寸。