The Largest Open Access Portal of Nondestructive Testing (NDT)

474 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   Product Spotlight CIVA 2017 UT Module StandEXTENDE CIVA NDE Simulation Software is the world leader of NDT Simulation. The UT simulation Module incl ... udes: - "Beam computation": Beam propagation simulation - "Inspection Simulation": Beam interaction with flaws or specimens The user can simulate a whole inspection process (pulse echo, tandem or TOFD) with a wide range of probes (conventional, Phased- arrays or EMAT), components, and flaws. > 6 Showcases26 Videos Webinar: FMC & Advanced Focusing Techniques for Improved Ultrasonic Inspections StandZETEC, Inc. Phased array ultrasound is now a commonly accepted inspection technology. Now there is excitement ar ... ound new techniques in Phased Array: Full Matrix Capture (FMC) & Total Focusing Method (TFM). Our webinar on December 5 & 6 will illustrate how these techniques, implemented on a TOPAZ64 instrument, can improve the results of existing inspections. Register today. > 5 Showcases5 Videos 35 years of VOGT Ultrasonics! StandVOGT Ultrasonics GmbH This year we are celebrating a company anniversary! 35 years have passed since we first took our t ... est device and swung the probe on behalf of safety. But our ultrasonic know-how goes back many years.. > 3 Showcases FAAST-PA! OEM Patented phased Array for high speed UT inspection StandSocomate International Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m ... any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time. > more Showcases Share... Home Exhibition Archive Forum Jobs MyNDT Network Events Directory NDT A-Z Advertise Privacy Policy Contact About © NDT.net - Where expertise comes together. The Largest Open Access Portal of Nondestructive Testing (NDT)- since 1996 We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info Accept top this is debug window s