*Seeing Cracks in Heat Exchanger Tubes* Circumferential cracking is very difficult to detect and characterize with standard eddy current bobbin probes for various reasons. Eddyfi has developed the patented DefHi eddy current array probe to help detect some cracks. Discover how by watching our latest video. kzbin.info/www/bejne/iprGdqWFiNiXnc0 #heatexchanger #eddycurrentarray #nondestructivetesting