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|Title:||Surface-roughness study using laser speckle method||Authors:||Toh, S.L.
|Issue Date:||Feb-1998||Citation:||Toh, S.L., Shang, H.M., Tay, C.J. (1998-02). Surface-roughness study using laser speckle method. Optics and Lasers in Engineering 29 (2-3) : 217-225. ScholarBank@NUS Repository. https://doi.org/10.1016/S0143-8166(97)00087-0||Abstract:||Current technique 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 spark-erosion 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 practical method of evaluating surface-roughness is proposed.||Source Title:||Optics and Lasers in Engineering||URI:||http://scholarbank.nus.edu.sg/handle/10635/58756||ISSN:||01438166||DOI:||10.1016/S0143-8166(97)00087-0|
|Appears in Collections:||Staff Publications|
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