JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
Original Papers
Simple Construction of Calibration Curve and Surface Roughness Detection in Surface Roughness Detection by Speckle Contrast Method
Takuya WadaShouhei KoyamaHiroaki Ishizawa
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2019 Volume 103 Issue 6 Pages 195-200

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Abstract

The Surface roughness is one of the important factors related to the appearance and performance of products, and the interest is further increased in various kinds of manufacturing. This paper describes a novel method for measuring surface roughness by laser speckle method. In the proposed method, instead of directly fitting with surface roughness and speckle feature amount, indirect parameters are obtained by converting the functional system. The polished metal pieces are used as the sample set. The prediction formula was obtained based on the reference value measured by the conventional method, and the prediction error of the prediction formula was verified by applying the sample of unknown surface roughness. In addition, we confirmed that the prediction accuracy improves by limiting the range for constructing the prediction formula. This method enables us to quickly detect the surface roughness by using a very simple configuration and a simple analysis method. A system that uses the method can be constructed calibration curve of surface roughness.

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© 2019 The Illuminating Engineering Institute of Japan
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