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486 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 FMC/TFM StandAdvanced OEM Solutions Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr ... oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are: Beautiful Image! Easier to understand what you're looking at Completely focused in entire image or volume Much easier to define setups before inspection Easier to decipher geometry echoes from real defects Oriented defects (e.g. cracks) are imaged better See image from different wave modes from one FMC inspection FMC data can be reprocessed/analyzed without going back to the field > 3 Showcases NOVO Armor 15 & NOVO Armor 22 StandNOVO DR The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1 ... 5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement > 2 Showcases2 Videos X-ray CT aids research into defect formation in AM parts StandNikon Metrology X-ray CT is used to research how additive manufacturing process parameters influence defect format ... ion in AM parts. > 6 Showcases3 Videos SONOAIR - air-coupled Phased Array Ultrasonic Inspection System StandSONOTEC Ultraschallsensorik Halle GmbH For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors, ... the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers. > 5 Showcases5 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