Reply To: MPI ASTM E 1444 15-5 MAT’l Linear indications

  • Magnetic Particle Inspection (MPI) (MT)

    anthony-wohali

    Member
    28/11/2021 at 7:09 pm

    I would suggest metallographic cross-sectioning to verify crack presence and depth, and then acid etch the metallographic mount as well as remnants of the destroyed part to see if grinder burn/cracking occurred. First suspicion would be grinder check, which can be caused by poorly-controlled machining process.