Does ACFM work on forgings and castings?
Summary Yes, ACFM does work on forgings and castings. Detail ACFM detects and sizes planar defects in any metal, regardless of how a defect is formed. The technique is relatively insensitive to surface roughness, so forgings and castings can be inspected as easily as machined or welded components. Forgings and castings often have large areas ideally suited to array probes and consideration must be made for in-service defects that can initiate from features such as pores or laps. Welded or machined components often have discrete stress raisers that need to be inspected, limiting the use of array probes, but don’t suffer the same form of in-service defects common to forged or cast components.
