A transducer made up of fluxgate sensors for testing wire rope defects

Based on analyzing the magnetic leakage feature of wire rope defects, the longitudinal resolved vector B_ot of the defect leakage field is taken for the object to be tested. In order to detect the weak magnetic leakage field, a fluxgate sensor of single core and single winding is developed. Using the fluxgate, a new kind of transducer for testing defects of wire rope has been designed. The structure and interface circuit of the transducer are studied. The experimental results of detecting the LF and LMA defects of the wire rope are presented