Rf. Mostafavi et D. Mirshekarsyahkal, SIMPLE ELECTROMAGNETIC DETECTION OF VARIATIONS IN PROPERTIES OF METAL-SURFACES, IEEE transactions on magnetics, 33(4), 1997, pp. 2492-2494
Recently, a significant improvement in the sensitivity of the nonunifo
rm ac field measurement technique for the detection of cracks was repo
rted. In this paper, the results of the application of the improved te
chnique in the detection of heat-affected zones and ground welds are p
resented and briefly discussed. In such applications, the use of a lon
g probe is essential.