Ultrasonic Profiling of an Object

A computer-controlled ultrasonic C-scan instrumentation system that was developed primarily for use in finding defects inside solid material specimens can also be used to obtain three-dimensional profiles of the top surfaces of such specimens. In some applications, ultrasonic profiling by use of this system might be an attractive alternative to profiling by use of calipers, linear variable-differential transformers, coordinate-measuring machines, laser profilometers, and other instruments.