caa a22 4500 465750605 CHVBK 20180323111832.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02322702 doi (NATIONALLICENCE)springer-10.1007/BF02322702 Measurement of surface displacements in a tribological application [Elektronische Daten] [F. Moslehy, M. Seif, S. Rice] Laser-speckle photography is used to measure deformations which occur on the lateral surface of a rectangular-section pin which is in dry sliding contact against a counterface disk. The ‘side' of the pin is illuminated by a pulsed ruby laser. A double-exposure specklegram is made to obtain deformations which occur between laser pulses. So, by appropriately sequencing pulses, deformation histories can be obtainedin situ. Since the exposed ‘side' of the thin pin specimen represents the ‘cover' layer under which subsurface sections lie, the deformation history observable through the laser-speckle method reflects the deformation behavior which is occurring on subsurface planes. The strain fields associated with the deformations are also calculated by the usual methods which include nonlinear terms (Lagrangian formulation). Moreover, this paper presents results obtained for the extent of the plastically deformed zone for different materials. These fundamental data, obtained by laser-speckle photography, yield direct displacement or strain histories for wear specimens. Such data are important for understanding wear phenomena, and for the development of engineering models for wear. Society for Experimental Mechanics, Inc., 1990 Moslehy F. Department of Mechanical Engineering, University of Central Florida, 32816, Orlando, FL aut Seif M. Department of Mechanical Engineering, Tuskegee University, 36088, Tuskegee, AL aut Rice S. College of Engineering, University of Central Florida, 32816, Orlando, FL aut Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 49-54 0014-4851 30:1<49 1990 30 11340 https://doi.org/10.1007/BF02322702 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02322702 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moslehy F. Department of Mechanical Engineering, University of Central Florida, 32816, Orlando, FL aut NATIONALLICENCE 700 1- Seif M. Department of Mechanical Engineering, Tuskegee University, 36088, Tuskegee, AL aut NATIONALLICENCE 700 1- Rice S. College of Engineering, University of Central Florida, 32816, Orlando, FL aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 49-54 0014-4851 30:1<49 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer