A method combining numerical and experimental methods was used to determin the parameters of the array current probes.The transverse cracks at the root of bolts were scanned quickly and exactly.

• 采用实验型和数值型相结合的方法,确定了涡流阵列式探头的参数,实现了对螺栓头杆结合部周向裂纹快速、准确地检测。