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A technique for biaxial damping measurement

Citation

Hooker, RJ and Foster, CG, A technique for biaxial damping measurement , Journal of Sound and Vibration, 188, (1) pp. 55-73. ISSN 0022-460X (1995) [Refereed Article]

DOI: doi:10.1006/jsvi.1995.0578

Abstract

A description is given of a novel technique by means of which experimental studies may be made of the energy dissipation behaviour of materials subjected to biaxial (i.e., combined stress) loading. A specimen in the form a thin cylinder is subjected to simultaneous but separately controlled fluctuating fluid pressures internally, externally and axially. Pressure control is achieved by electro-hydraulic servo-systems and strain response is measured by miniature electrical resistance strain gauges. The apparatus is believed to be unique in its ability to apply biaxial with uniform stress distribution and uniform ratio of principal stresses over the full range -1 ≤ σ2/σ1≤ 1 with adequate control and accuracy and absence of means tress. Hysteresis loops in the two principal directions are recorded. The principles of the apparatus and the special features of its design are discussed. Experimental results are presented. The errors associated with operation of the apparatus correspond to loss factors of the order of 0·001-0·002 and hence the apparatus may be considered satisfactory for studies of materials of loss factor 0·01 and higher. © 1995 Academic Press. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Mechanical Engineering
Research Field:Mechanical Engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Philosophy and Religious Studies
Author:Foster, CG (Dr Colin Foster)
ID Code:6412
Year Published:1995
Deposited By:Civil and Mechanical Engineering
Deposited On:1995-08-01
Last Modified:2011-08-25
Downloads:0

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