Patent ID: 8336365

Claim:
A method for calibrating an ultrasonic testing device comprising: providing a first test block formed of a material type to be tested, the first test block having a first thickness, and a second test block formed of the material type to be tested, the second test block having a second thickness less than the first thickness; measuring a first time-of-flight (TOF) of an ultrasonic excitation signal applied to the first test block by the ultrasonic testing device to be calibrated; calculating a predicted second TOF of an ultrasonic excitation signal applied to the second test block based upon the first TOF, the first thickness and the second thickness; measuring a second TOF of an ultrasonic excitation signal applied to the second test block by the ultrasonic testing device to be calibrated; and rejecting the second TOF measurement if it deviates from the predicted second TOF by more than a predetermined tolerated window size.