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|Title:||Surface-roughness Study Using Laser Speckle Method||Authors:||Toh, S.L.
|Issue Date:||26-Mar-1998||Citation:||Toh, S.L.,Shang, H.M.,Tay, C.J. (1998-03-26). Surface-roughness Study Using Laser Speckle Method. Optics and Lasers in Engineering 29 (2-6) : 217-225. ScholarBank@NUS Repository.||Abstract:||Current techniques for surface-roughness measurements can be classified into two broad categories: those using a measuring stylus which requires direct contact with the test object and those using non-contacting laser techniques. In this paper, a whole-field speckle method is employed to determine metallic-surface-roughness. The technique enables evaluation of the roughness of particular points on a surface. Six sets of surfaces prepared by a sparkerosion process with roughness ranging from 0·4-12·5 μm have been tested. Different correlation methods were used to process the test data and a practi-cal method of evaluating surface-roughness is proposed. © 1998 Published by Elsevier Science Ltd. All rights reserved.||Source Title:||Optics and Lasers in Engineering||URI:||http://scholarbank.nus.edu.sg/handle/10635/58757||ISSN:||01438166|
|Appears in Collections:||Staff Publications|
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