Determining sound velocity in steel as a function of temperature for wall thickness determination, measures interval between signals reflected at locations within heating zone

摘要

A length of the material is prepared as a sample (1), with two reflection zones (3, 4) of given spacing (a) at one end. This end (2) is heated to given temperatures, for sound velocity determination. An ultrasound signal is introduced (5). The interval (DELTAt), between reflected signals is measured. Sound velocity (c) is calculated as the quotient of spacing (a) and the interval (DELTAt). The end (6) opposite the first, heated end section (2), is cooled. An Independent claim is included for corresponding apparatus.