Time of Flight Diffraction (TOFD)

Time of Flight Diffraction (TOFD) is a reliable method of ultrasonic testing (UT) used to look for flaws in welds and is a non-destructive testing method. TOFD uses the time of flight of an ultrasonic pulse to find the location of a reflector. It can also be used for weld overlays and the heat affected zones of other components as well such as piping, pressure vessels, clad material, storage tanks, and structural steel