Intensity and contrast based surface roughness measurement approaches for rough and shiny surfaces

P. Prabhathan; Chaolong Song; Aswin Haridas; Guru Prasad; Kelvin Chan

doi:10.1117/12.2270535

13 June 2017 Intensity and contrast based surface roughness measurement approaches for rough and shiny surfaces

P. Prabhathan, Chaolong Song, Aswin Haridas, Guru Prasad, Kelvin Chan

Author Affiliations +

Proceedings Volume 10449, Fifth International Conference on Optical and Photonics Engineering; 1044912 (2017) https://doi.org/10.1117/12.2270535
Event: Fifth International Conference on Optical and Photonics Engineering, 2017, Singapore, Singapore

Abstract

In manufacturing engineering the surface finish of a machined component is of fundamental importance in order to ensure its performance. A non-contact and non-destructive device based on optical technique, is a promising alternative to stylus based device for carrying out measurement of surface quality. In addition to this, in situ monitoring of surface roughness on a workpiece is an important requirement in modern machining process, since it would increase on-line machining rate and consequently productivity. Here, measurement approaches and system configuration for surface roughness measurement using laser speckle intensity and contrast are discussed. The technique would allow full-field measurement over sample of interest having both rough and shiny surface properties. Measurement data on standard calibration plates is presented with details on the measurement accuracy and reliability.

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P. Prabhathan, Chaolong Song, Aswin Haridas, Guru Prasad, and Kelvin Chan "Intensity and contrast based surface roughness measurement approaches for rough and shiny surfaces", Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 1044912 (13 June 2017); https://doi.org/10.1117/12.2270535

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