Patent ID: 6282962
Filing Date: 2001-09-04
Classification: G01B

Abstract:
A gauge for determining a thickness of a coating on a substrate, comprising:a transducer for emitting and receiving ultrasonic signals into the coating and for generating electrical transducer signals proportional to the ultrasonic signals received by said transducer, said received signals include first signals reflected from a transducer/coating interface and second signals reflected from a coating/substrate interface;a pulser for sending pulses to the transducer to trigger the emission of said ultrasonic signals;a sampler for sampling the electrical transducer signals and generating sampled data;control means for calculating a thickness of the coating based on said sampled data, said control means includes means for subjecting said sampled data to a deconvolution analysis so as to distinguish sampled data corresponding to said first signals from sampled data corresponding to said second signals.