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Particle Velocimetry and Photoelasticity Applied to the Study of Dynamic Sliding Along Frictionally-Held Bimaterial Interfaces: Techniques and Feasibility

Lykotrafitis, G. and Rosakis, A. J. and Ravichandran, G. (2006) Particle Velocimetry and Photoelasticity Applied to the Study of Dynamic Sliding Along Frictionally-Held Bimaterial Interfaces: Techniques and Feasibility. Experimental Mechanics, 46 (2). pp. 205-216. ISSN 0014-4851.

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A laser interferometry-based technique was developed to locally measure the in-plane components of particle velocity in dynamic experiments. This technique was applied in the experimental investigation of dynamic sliding along the incoherent (frictional) interface of a Homalite–steel bimaterial structure. The bimaterial specimen was subjected to uniform compressive stress and impact-induced shear loading. The evolution of the dynamic stress field was recorded by high-speed photography in conjunction with dynamic photoelasticity. The combination of the full-field technique of photoelasticity with the local technique of velocimetry was proven to be a very powerful tool in the investigation of dynamic sliding. A relatively broad loading wave with an eye-like structure emanated from the interface. The particle velocity measurements established that sliding started behind the eye-like fringe pattern. It propagated with supershear speed with respect to Homalite. A shear Mach line originating from the sliding tip is visible in the photoelastic images. A vertical particle velocity measurement revealed the existence of a wrinkle-like pulse traveling along the bimaterial interface. The wrinkle-like pulse followed the initial shear rupture tip and propagated at a specific subshear speed.

Item Type:Article
Related URLs:
URLURL TypeDescription
Rosakis, A. J.0000-0003-0559-0794
Ravichandran, G.0000-0002-2912-0001
Additional Information:© 2006 Society for Experimental Mechanics. Received: 3 August 2005; Accepted: 21 November 2005. The authors gratefully acknowledge the support of the Office of Naval Research through grant N00014-03-1-0435 (Dr. Y.D.S. Rajapakse, Program Manager). The authors would also like to thank "Polytec", USA, (M. Pineda and E. Lawrence), for the use of the second velocimeter.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-03-1-0435
Subject Keywords:dynamic frictional sliding; incoherent interface; bimaterial system; photoelasticity; in-plane velocity measurement; supershear rupture; subshear wrinkle-like pulse
Issue or Number:2
Record Number:CaltechAUTHORS:20110714-084450267
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24417
Deposited By: Tony Diaz
Deposited On:14 Oct 2011 15:59
Last Modified:09 Mar 2020 13:19

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