Eddy-current based determining of conductivity and permittivity
The eddy-current based approach has found a wide utility in conductometry, as well as in testing of good conducting materials (sigma similar to 10(6)S/m). Its main advantage is that it enables non-contact measurements to be taken. The paper deals with an eddy-current based transducer or testing of poor conducting materials, the electromagnetic parameters of which are approximately equal to those of living tissues (mu = mu(0), sigma similar to 0.5S/m, epsilon similar to 100 epsilon(0)).
conductivity eddy currents non-destructive testing