Surface-roughness study using laser speckle method |
| |
Authors: | S L Toh H M Shang C J Tay |
| |
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 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. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |