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1. (WO2017149658) ULTRASONIC MEASUREMENT DEVICE AND ULTRASONIC MEASUREMENT METHOD

Pub. No.:    WO/2017/149658    International Application No.:    PCT/JP2016/056262
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 02 00:59:59 CET 2016
IPC: G01N 29/04
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KIMURA, Tomonori
木村 友則
Title: ULTRASONIC MEASUREMENT DEVICE AND ULTRASONIC MEASUREMENT METHOD
Abstract:
An ultrasonic measurement device (1) for determining the attributes of a test specimen (100) through which incident ultrasonic waves propagate as plate waves (UW) in a plurality of propagation modes. The ultrasonic measurement device (1) is equipped with: a receiving unit (30) for receiving a detection signal obtained by detecting a plate wave (UW) that propagates through the test specimen (100), and outputting a received signal that expresses the time domain waveform of the detection signal; a strength detection unit (12) for detecting the signal strength of a waveform section that corresponds to a first propagation mode, and also detecting the signal strength of a waveform section that corresponds to a second propagation mode; and a determination unit (13) for comparing the signal strengths thereof, and determining the attributes of the test specimen (100) on the basis of the comparison results.