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WesDyne International (AMDATA Products) WesDyne is an engineering and technical services firm dedicated to providing standard and custom nondestructive examinations (NDE) products and systems 525 views Technical Discussions wave wave 08:08 May-31-2006 ask Whoever can explain "Edge effect" in eddy current inspection for me?    Reply  Translate  Close   Jeff Medford NDT Inspector Nucor Steel, USA, Joined Apr 2005, 6 Jeff Medford NDT Inspector Nucor Steel, USA, Joined Apr 2005 6 08:32 Jun-06-2006 Re: ask It very basic!!! As you get closer to the edge of a test material you eddy current field is compressed in turn increasing your resisitance. In turn that effects your impedence point. Simple. I have performed numerous inspection while having some sort of edge effect. It is no where written that is a follow practice but it is done. As long as you know the effects playing on your inspection. Your good. Just kidding stick to the proceedures and you can go wrong ----------- Start Original Message ----------- : Whoever can explain "Edge effect" in eddy current inspection for me? ------------ End Original Message ------------    Reply  Translate  Close   Thomas Murphy NDT Inspector USA, Joined Jul 2000, 16 Thomas Murphy NDT Inspector USA, Joined Jul 2000 16 05:23 Jun-08-2006 Re: ask Is this really true? I would think that the inductive reactance would increase, increasing the impedance. Maybe someone could tell me why I am wrong. The coil parameters are presumed not to have changed. Any help would be appreciated. Tom ----------- Start Original Message ----------- : It very basic!!! As you get closer to the edge of a test material you eddy current field is compressed in turn increasing your resisitance. In turn that effects your impedence point. Simple. I have performed numerous inspection while having some sort of edge effect. It is no where written that is a follow practice but it is done. As long as you know the effects playing on your inspection. Your good. Just kidding stick to the proceedures and you can go wrong : : Whoever can explain "Edge effect" in eddy current inspection for me? ------------ End Original Message ------------    Reply  Translate  Close

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