Articles | Volume 5, issue 2
J. Sens. Sens. Syst., 5, 373–380, 2016
https://doi.org/10.5194/jsss-5-373-2016

Special issue: Sensor/IRS2 2015

J. Sens. Sens. Syst., 5, 373–380, 2016
https://doi.org/10.5194/jsss-5-373-2016

Regular research article 01 Nov 2016

Regular research article | 01 Nov 2016

Annular arrays for novel ultrasonic measurement techniques

Mario Wolf, Elfgard Kühnicke, Sebastian Kümmritz, and Michael Lenz Mario Wolf et al.
  • Solid-State Electronics Laboratory, Dresden University of Technology, Dresden, Germany

Abstract. The paper shows how the precise knowledge of the sound field of an ultrasonic annular array can contribute to the development of novel measurement techniques. Emphasis is placed on (a) a non-invasive method for sound velocity measurements in fluids using the echo signals from scattering p]articles, (b) a non-invasive method for the combined determination of thickness and sound velocity in layered structures by using a novel focusing technique, and (c) a non-scanning curvature measurement method exploiting the wave front curvature of a reflected wave. To demonstrate the methods, the principles as well as results of simulations and measurements are discussed.

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Short summary
The paper shows how the precise knowledge of the sound field of an ultrasonic annular array can contribute to the development of novel measurement techniques. It demonstrates the locally resolved measurement of sound velocity in fluids, simultaneous measurement of thickness, sound velocity of layers and curvature. To demonstrate the methods, the principles as well as results of simulations and measurements are discussed.
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