Time of Flight Diffraction
Time of Flight Diffraction is a sensitive and accurate method for inspecting welds for defects.
It is a pitch catch method that uses one probe to pulse an ultrasonic wave, and another on
the other side of the weld to receive the ultrasonic wave. The advantages of TOFD are that it
is a very fast inspection, along with being able to detect transverse type defects. TOFD is very
accurate for sizing both the length and height of flaws.