Ultrasonic bridge for simultaneous measurements of wave speed and attenuation

I. N. Komsky, J. D. Achenbach

Research output: Contribution to journalConference articlepeer-review


Measurements of wave speed and attenuation can play an important role in the monitoring of material properties. Current measurement methods are, however, not integrated, but require different electronic system configurations. In this paper a technique is described for simultaneous velocity and attenuation measurements. To determine the attenuation, the amplitudes of tone-burst signals generated over a wide frequency range have been measured. For the determination of the wave velocity, a number of frequencies are selected at which a zero crossing of the tone-burst signal coincides with a zero crossing of a continuous reference sinewave. A self-calibrating technique for simultaneous measurements of wave speed and attenuation has been employed in conjunction with a recently developed ultrasonic bridge. As an application of the technique, velocity and amplitude measurements for surface waves on SiC Whisker Reinforced 2124 Al Alloy Composites have been carried out.

Original languageEnglish (US)
Article number234072
Pages (from-to)849-854
Number of pages6
JournalProceedings - IEEE Ultrasonics Symposium
StatePublished - 1991
Event1991 IEEE Ultrasonics Symposium. ULTSYM 1991 - Orlando, United States
Duration: Dec 8 1991Dec 11 1991

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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