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502 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 Echomac® PA Rail Wheel Tester StandMagnetic Analysis Corporation MAC introduces two versions of Rail Wheel Testers using ECHOMAC® PA platform based on customer requ ... irements. > 4 Showcases4 Videos XRHRobotStar StandVisiConsult Systems & Solutions GmbH In high volume industries like automotive the requirement for a hundred percent X-ray inspection c ... reates a bottleneck in the production. The XRHRobotStar is a fully Automated Defect Recognition (ADR) capable robot-system that allows an ultra-fast in-line inspection. > 5 Showcases5 Videos NEW - TD Focus-ScanRX StandTechnology Design Ltd The NEW Next Generation Advanced UT platform, TD Focus ScanRX - Also available as a card stack solut ... ion. Key Improvements 1. Data acquisition is significantly faster than current design 2. Better aesthetic – closely aligns with HandyScan RX 3. Improved IP rating (Target IP66) 4. Ruggedized housing 5. Connectors are protected from impact and ingress 6. Integrated stand and separate retractable handle easy to keep clean) 7. Touchscreen with ruggedized display glass 8. 3-Axis encoder input > 4 Showcases4 Videos Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler StandSilverwing The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d ... ata improvements to tank shell inspections and other structures such as vessels and offshore installations. > 4 Showcases4 Videos more Showcases Share... Home Exhibition Archive Forum Jobs Members 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