Ultrasonic Penetration of Granular Materials in Varying Gravity

Firstbrook, D. G. , Worrall, K. , Doherty, P., Timoney, R., Harkness, P. and Suñol, F. (2017) Ultrasonic Penetration of Granular Materials in Varying Gravity. In: ASCE Earth and Space Conference, Orlando, FL, USA, 11-15 Apr 2016, ISBN 9780784479971

Abstract

This paper describes the effects of ultrasonically-assisted penetration of granular materials, in high gravity situations. The experimental rig, instrumented to obtain penetration force, rate and power both with and without ultrasonic assistance, was used to drive a penetrator into a granular material inside the ESA Large Diameter Centrifuge at accelerations of up to 10 g during early September 2015. Ultrasonic penetration proved to be most beneficial at lower levels of accelerations, reducing the required overhead weight by 80%, and the total power consumption by 27%.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Timoney, Dr Ryan and Worrall, Dr Kevin and Firstbrook, David George and Harkness, Professor Patrick
• Authors: Firstbrook, D. G., Worrall, K., Doherty, P., Timoney, R., Harkness, P., and Suñol, F.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISBN: 9780784479971
• Copyright Holders: Copyright © 2016 ASCE
• First Published: First published in Earth and Space 2016: Engineering for Extreme Environments
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher

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