PMFT - A NEW EDDY-CURRENT TECHNIQUE FOR CHECKING MATERIAL HARDNESS

In the last few years, developments in microprocessor power has enable d more intelligence to be incorporated into NDT instruments, allowing access to many more features and more information for the operator. Un fortunately, this has frequently been paired with increasing complexit y and more difficult operating procedures to take advantage of these f eatures([1]). A recent European development has, however, managed to c ombine the advantages of the additional processor power with user-frie ndliness, giving us PMFT or 'Preventive Multi-Frequency Testing'. PMFT offers component manufacturers an eight-frequency high-speed eddy cur rent test that is both fast and very simple to operate and calibrate.