Ultrasonic Testing
The method is based on mechanical waves (ultrasound) generated by a piezo-magnetically excited element at a frequency typically in the range between 2 and 5 mhz. Control involves the transmission, reflection, absorption of ultrasonic propagated wave in the controlled part. Transmitted wave beam is reflected within the play and the flaws, then returns to the flaw that can be both transmitter and receiver. Positioning fault is done by interpretation of the signals.
