crack sizing with eddy current

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crack sizing with eddy current
Posted by: Elmar van den Elzen (PID_587), E-mail: evde@wxs.nl, on May 12, 2000 at 00:17 :
Dear colleagues,
Sizing of the depth of surface breaking cracks with eddy current is at least difficult. I would like to make an overview of crack conditions influencing the eddy current response. What are the main factors involved and roughly how much variations can these factors be expected to cause? The local stress seems to be one factor, and what about course of the crack, width of the crack, condition of the internal crack surface etc. etc.
Does anybody have experience with such factors?
Does anybody know existing literature with a proper covering of this subject?
I am especially looking forward to replies relevant to sizing of surface breaking cracks in hardened ferromagnetic steel types.
Elmar van den Elzen

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Re: crack sizing with eddy current Tim MacInnis 19:40 5/12/2000 (0)

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: Dear colleagues, : Sizing of the depth of surface breaking cracks with eddy current is at least difficult. I would like to make an overview of crack conditions influencing the eddy current response. What are the main factors involved and roughly how much variations can these factors be expected to cause? The local stress seems to be one factor, and what about course of the crack, width of the crack, condition of the internal crack surface etc. etc. : Does anybody have experience with such factors? : Does anybody know existing literature with a proper covering of this subject? : I am especially looking forward to replies relevant to sizing of surface breaking cracks in hardened ferromagnetic steel types. : Elmar van den Elzen :

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