ULTRASONIC MEASURING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic measuring method and an ultrasonic measuring device for enabling stable and sensitive measurement when performing the ultrasonic measurement of a hot material via a water medium by using a piezoelectric ultrasonic probe. SOLUTION: There are provided: the piezoelectric ultrasonic probe; an acoustic coupling means by the water medium; a pulse transmission means; an ultrasonic signal reception means; a surface echo extraction means for transmitting an ultrasonic pulse by the pulse transmission means before a reflected wave received first is extracted; an effective signal selection means for selecting an effective signal based on the phase of the reflected wave extracted by the surface echo extraction means; and a measuring means for performing the measurement processing by using the effective signal selected by the effective signal selection means. COPYRIGHT: (C)2006,JPO&NCIPI