Direct measurement of ultrasonic velocity of thin elastic layers

Mingxi Wan, Bei Jiang, Wenwu Cao

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This letter reports a simple new technique for the ultrasonic velocity measurement on thin elastic layers of fractional wavelength thickness using broadband transducers. An external trigger to the oscilloscope with continuously variable frequency and an intensity enhancing strobe signal allow direct measurement of the wavefront time shift down to 13 ns. The technique makes it possible to measure the sound velocity of thin layers with the thickness down to 10-2λ. Using a pair of 2.25-MHz transducers, we have accurately measured the sound velocity of a 26-μm-thick aluminum foil.

Original languageEnglish (US)
Pages (from-to)626-628
Number of pages3
JournalJournal of the Acoustical Society of America
Volume101
Issue number1
DOIs
StatePublished - Jan 1 1997

Fingerprint

acoustic velocity
transducers
ultrasonics
oscilloscopes
velocity measurement
foils
actuators
broadband
aluminum
shift
wavelengths
Layer
Sound
Thickness

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

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Direct measurement of ultrasonic velocity of thin elastic layers. / Wan, Mingxi; Jiang, Bei; Cao, Wenwu.

In: Journal of the Acoustical Society of America, Vol. 101, No. 1, 01.01.1997, p. 626-628.

Research output: Contribution to journalArticle

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