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Updated: Apr 7, 2026

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
Published on: September 28, 2015
Ultrasonic radiation from wedges of cubic profile: Experimental results
Brian E Anderson1, Marcel C Remillieux1, Pierre-Yves Le Bas1
1Geophysics Group (EES-17), MS D446, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Abstract:
This paper presents experimental results demonstrating the increase in ultrasonic radiation obtained from a wedge of cubic profile relative to a plate of uniform thickness. The wedge of cubic profile provides high efficiency sound radiation matching layer from a mounted piezoelectric transducer into the surrounding air. Previous research on structures with indentations of power-law profile has focused on vibration mitigation using the so called "acoustic black-hole" effect, whereas here such structures are used to enhance ultrasonic radiation. The work provides experimental verification of the numerical results of Remillieux et al. (2014).
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