✦ LIBER ✦

Use of a fiber optic displacement probe as a surface finish sensor

✍ Scribed by Steven C. Fawcett; Richard F. Keltie

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 911 KB
Volume: 24
Category: Article
ISSN: 0924-4247
DOI: 10.1016/0924-4247(90)80041-3

No coin nor oath required. For personal study only.

✦ Synopsis

A series of tests is described that correlates the output of a fiber optic-based displacement sensor with the surface finish and material characteristics of a variety of targets. Nickelplated targets with a range of surface finishes were examined, and the corresponding sensor sensitivities computed. For common machining processes, the sensivitity decreases with increasing surface peak-to-valley roughness. Material effects are examined by preparing a variety of samples made from different materials using the same polishing techniques. In this way, the relative effects of material and surface finish on the probe's sensivity are examined. The results indicate that the fiber optic probe is capable of discriminating between both material and surface finish variations, and shows promise as an in situ diagnostic tool for use in precision fabrication processes.

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