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Evaluating shock absorption behavior of small-sized systems under programmable electric field

Jagtap, Piyush and Kumar, Praveen (2014) Evaluating shock absorption behavior of small-sized systems under programmable electric field. In: REVIEW OF SCIENTIFIC INSTRUMENTS, 85 (11).

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Official URL: http://dx.doi.org/ 10.1063/1.4900842

Abstract

A simple ball-drop impact tester is developed for studying the dynamic response of hierarchical, complex, small-sized systems and materials. The developed algorithm and set-up have provisions for applying programmable potential difference along the height of a test specimen during an impact loading; this enables us to conduct experiments on various materials and smart structures whose mechanical behavior is sensitive to electric field. The software-hardware system allows not only acquisition of dynamic force-time data at very fast sampling rate (up to 2 x 10(6) samples/s), but also application of a pre-set potential difference (up to +/- 10 V) across a test specimen for a duration determined by feedback from the force-time data. We illustrate the functioning of the set-up by studying the effect of electric field on the energy absorption capability of carbon nanotube foams of 5 x 5 x 1.2 mm(3) size under impact conditions. (C) 2014 AIP Publishing LLC.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the AMER INST PHYSICS, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 12 Jan 2015 05:44
Last Modified: 12 Jan 2015 05:44
URI: http://eprints.iisc.ac.in/id/eprint/50585

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