Optimisation of the longitudinal-torsional output of a half-wavelength Langevin transducer

Al-Budairi, H. , Lucas, M. and Harkness, P. (2012) Optimisation of the longitudinal-torsional output of a half-wavelength Langevin transducer. In: 41st Annual Symposium of the Ultrasonic Industry Association, San Francisco, CA, USA, 16-18 Apr 2012,

Abstract

Numerous ultrasonic applications, such as high-frequency/low frequency drilling, require or can benefit from the inclusion of some torsional vibration behaviour within a primarily longitudinal pattern. Producing longitudinal-torsional (LT) vibration in a Langevin transducer using the mode degeneration method tends to give more robust results than the competing mode-coupling approach, and this work is concerned with optimizing the relative strengths of the longitudinal and torsional responses within the context of a half-wavelength Langevin transducer. Using numerical and experimental techniques, the output of such a system is predicted across a range of geometries and compared to experimental results obtained through laser vibrometry.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Al-Budairi, Dr Hassan and Lucas, Professor Margaret and Harkness, Professor Patrick
• Authors: Al-Budairi, H., Lucas, M., and Harkness, P.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment; College of Science and Engineering > School of Engineering > Systems Power and Energy
• Copyright Holders: Copyright © 2012 The Authors
• Publisher Policy: Reproduced with the permission of the authors.