A technique for precision measurements of elastic surface wave properties on arbitrary materials

B. R. Tittmann

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A technique is described for determining both the elastic surfce wave velocity and its temperature coefficient. The technique can be used on very small samples and is not restricted to any particular class of materials, such as piezoelectrics. It employs an adaptation of the old method of acoustic wave generation with a dc pulse rather than an rf signal applied to a piezoelectric transducer. The generator and receiver transducers are very small chips, approximating point sources, and at the receiver the vertical component of particle velocity is measured as a function of time enabling one to distinguish clearly between various types of surface modes, e.g., Rayleigh wave, pseudosurface wave, Lamb wave, etc. The technique yields absolute surface wave velocities accurate to 0.2% and is readily adaptable to the use of the sing-around technique for measuring relative changes in the sound velocity as small as 1 ppm.

Original languageEnglish (US)
Pages (from-to)1136-1142
Number of pages7
JournalReview of Scientific Instruments
Volume42
Issue number8
DOIs
StatePublished - Dec 1 1971

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Elastic waves
Surface waves
surface waves
receivers
Rayleigh waves
Piezoelectric transducers
Lamb waves
wave generation
piezoelectric transducers
Acoustic wave velocity
acoustic velocity
elastic waves
point sources
Transducers
transducers
generators
chips
Acoustic waves
acoustics
coefficients

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

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abstract = "A technique is described for determining both the elastic surfce wave velocity and its temperature coefficient. The technique can be used on very small samples and is not restricted to any particular class of materials, such as piezoelectrics. It employs an adaptation of the old method of acoustic wave generation with a dc pulse rather than an rf signal applied to a piezoelectric transducer. The generator and receiver transducers are very small chips, approximating point sources, and at the receiver the vertical component of particle velocity is measured as a function of time enabling one to distinguish clearly between various types of surface modes, e.g., Rayleigh wave, pseudosurface wave, Lamb wave, etc. The technique yields absolute surface wave velocities accurate to 0.2{\%} and is readily adaptable to the use of the sing-around technique for measuring relative changes in the sound velocity as small as 1 ppm.",
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A technique for precision measurements of elastic surface wave properties on arbitrary materials. / Tittmann, B. R.

In: Review of Scientific Instruments, Vol. 42, No. 8, 01.12.1971, p. 1136-1142.

Research output: Contribution to journalArticle

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