Experimental considerations on water-couplant temperature for accurate velocity measurements by the LFB ultrasonic material characterization system

J. Kushibiki, Y. Ono, Yuji Ohashi

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

The line-focus-beam ultrasonic material characterization (LFB-UMC) system can measure the phase velocity of leaky surface acoustic waves (LSAWs) excited on the water-specimen boundary. The temperature distribution in the water-couplant, however, is the source of some measurement errors in the LSAW velocity. A method for obtaining the proper water-couplant temperature and longitudinal velocity has been developed using the measured temperature distribution and the small interference signals between the V(z) curve signals and the carrier leakage signals arising from the RF tone burst pulse generation circuit used in the system. A procedure to obtain the LSAW velocity accurately is established and the system achieves relative accuracy of LSAW velocity better than ±0.002% at a single chosen point and better than ±0.003% in two-dimensional measurements.

Original languageEnglish
Pages (from-to)619-623
Number of pages5
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
Publication statusPublished - 2000 Dec 1
Event2000 IEEE Ultasonics Symposium - San Juan, Puerto Rico
Duration: 2000 Oct 222000 Oct 25

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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