Eddy Current testing has a wide array of applications. Depending upon the material type, form and type of flaw being sought, coils/probes used for testing may be custom made or may be shelf items. Very popular for tubing inspection (heat exchangers, etc.) it has numerous applications across the industrial/aerospace spectrum.
A part of the electromagnetic testing family, eddy current testing has become the standard examination for tubing bundles in the petro-chemical industry. It is also a mainstay of the aerospace industry to examine aircraft components for cracking or other evidence of failure.