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Proceedings Paper

Improving the quality of fiber-optic-based surface-roughness sensing instrument using robust design methodology
Author(s): Devdas Shetty
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Paper Abstract

The primary limitation of the conventional techniques of surface roughness measurement is that the stylus has to traverse perpendicular to the machine lay always. The present research looks at the non contact, fiber optics based methodology using solid state lasers, which evaluates surface finish independent of the machine lay and surface orientation. The basic principle involves using diffracted laser light and digitizing the information to measure surface irregularities. The research has wide applications in manufacturing industries. One typical application described is the measurement of surface irregularities of a contoured turbine blade root attachment area as used in Aerospace industry. The paper outlines the optimization of the instrument using Design of Experiments or Robust Design procedure. The paper explains the steps involved in achieving reliable and quality design by taguchi experimentation.

Paper Details

Date Published: 28 May 1993
PDF: 11 pages
Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); doi: 10.1117/12.145536
Show Author Affiliations
Devdas Shetty, Univ. of Hartford (United States)


Published in SPIE Proceedings Vol. 1821:
Industrial Applications of Optical Inspection, Metrology, and Sensing
Gordon M. Brown; Kevin G. Harding; H. Philip Stahl, Editor(s)

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