Method and apparatus for measuring thickness of clad steel

摘要

A method and apparatus for measuring the thicknesses of a cladding layer and a base metal layer by applying ultrasonic waves on the side of a sample opposite the cladding layer. The reflected waves are sensed and displayed on an oscilloscope. Using a disclosed technique for eliminating noise and interference, the position of the interface between the cladding layer and base metal layer are measured from a pulse produced due to the discontinuity of acoustic impedance at the interface.