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

122755.pdf - Accepted Version



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
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
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
Related URLs:

University Staff: Request a correction | Enlighten Editors: Update this record