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Proceedings Paper

Wringing deformation effects in basic length measurements by optical interferometry
Author(s): Alexander Titov; Igor Malinovsky; Carlos Alberto Massone
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Paper Abstract

The effect of wringing deformations on the result of the main types of measurements by optical interferometry is studied in some detail. The wringing bending deformations can be used to improve by 10-20 times the accuracy of length measurements of gauge blocks with nominal lengths of a few millimeters. The data on the surface deformations of steel and quartz reference plates, resulting from the writing procedure of gauge blocks to their surface, are presented. Ways of crucial reduction of the plate surface deformations are reported. Surface texture deformations, arising in the tight wringing contact, are measured to be about 2.5-3 nm for modern steel and tungsten carbide blocks. Thanks to extremely high level of their reproducibility, the surface texture deformations, practically, do not affect the accuracy of the mechanical length measurements of gauge blocks.

Paper Details

Date Published: 20 November 2003
PDF: 11 pages
Proc. SPIE 5190, Recent Developments in Traceable Dimensional Measurements II, (20 November 2003); doi: 10.1117/12.505703
Show Author Affiliations
Alexander Titov, National Metrology Institute of Brazil (Brazil)
Igor Malinovsky, National Metrology Institute of Brazil (Brazil)
Carlos Alberto Massone, National Metrology Institute of Brazil (Brazil)

Published in SPIE Proceedings Vol. 5190:
Recent Developments in Traceable Dimensional Measurements II
Jennifer E. Decker; Nicholas Brown, Editor(s)

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