Patent ID: 8174407
Filing Date: 2012-05-08
Classification: G01N

Abstract:
1. A method of alerting a user of a material inspection device of a change in thickness of a material being inspected, the method comprising: determining a thickness offset from calibration information, the calibration information identifying a time of flight of a pulse through a reference sample similar in composition to a material to be inspected, the thickness offset indicating when a thickness of a material being inspected differs from a thickness of the reference sample; setting a calibration thickness alarm, the calibration thickness alarm corresponding to the thickness offset; detecting a change in thickness of the material being inspected; engaging the calibration thickness alarm to alert the user of the inspection device of a detected change in thickness of the material being inspected, determining a damage offset from calibration information, the calibration information identifying a time of flight of a pulse through a reference sample similar in composition to a material to be inspected; and determining a thickness offset from the damage offset, the thickness offset indicating when a thickness of a material being inspected differs from a thickness of the reference sample.