Surface Roughness Measurement With Fiber-Optics

[+] Author and Article Information
W. P. T. North

Department of Mechanical Engineering, University of Windsor, Windsor, Ontario and National Research Council of Canada, Ottawa, Canada

A. K. Agarwal

Ra definition, ANSI B46.1

J. Dyn. Sys., Meas., Control 105(4), 295-297 (Dec 01, 1983) (3 pages) doi:10.1115/1.3140674 History: Received October 12, 1982; Online July 21, 2009


This paper describes an experimental investigation of a technique for the measurement of surface roughness of “ground” surfaces using fiber-optics. A pair of fiber-optic bundles of similar specifications are used to carry both the incident light to and the reflected from the object surface at different angles of incidence. It has been shown that the ratio of reflected intensities is found to vary inversely as the cube of the average surface roughness.

Copyright © 1983 by ASME
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