Eddy current based NDT Tool – Non-destructive testing (NDT) is a very important tool in manufacturing industries to test and assure the products manufactured are guaranteed to perform as per specifications.
It is not possible to test every component destructively and therefore, non-destructive testing is required for 100% testing. Say for example, when a shaft is induction hardened, the case depth is to be assured
The variation of case depth will happen; location of case hardening may change; if the shaft is passed through the eddy current coil then it can give the assurance that, with reference to the master it is OK/Not OK and this can be done on 100% of the components, reducing mandatory cutting of samples every shift, and
In eddy current sorting/assurance the overall comparison of the job is done with respect to the confirmed OK sample and the change in coil impedance is related to change in metal properties/structure.
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