Search:
Computing and Library Services - delivering an inspiring information environment

Optically interferometric roughness measurements for spherical surfaces by processing two microscopic interferograms

Chen, Xiaomei, Grattan, K.T.V. and Dooley, R.Larry (2002) Optically interferometric roughness measurements for spherical surfaces by processing two microscopic interferograms. Measurement, 32 (2). pp. 109-115. ISSN 0263-2241

This is the latest version of this item.

Metadata only available from this repository.

Abstract

This paper discusses a method to carry out optical interferometric measurements for the surface roughness of spheres in a biomedical application to an artificial joint, using two beams of a Michelson interferometric microscope with digital image processing and a computational system. There will be two kinds of microscopic interferograms formed from the interference between the measurement beams reflected from the artificial joint surface and the reference beams from the reference surface. One interferogram has equal circular interference fringes and another has localized arc interference fringes. To process these two interferograms by using a digital image processing system, the edges of each of the interference fringes which are modulated by the micro-structure of the artificial joint surface can be extracted. The paper proposes an algorithm for the calculation of the standard reference mean circles and mean curves from each of the fringe edges by using the least square fitting method and to obtain the profile departures from the reference mean circles and mean curves and the surface roughness parameters.

Item Type: Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Depositing User: Xiaomei Chen
Date Deposited: 06 Nov 2012 16:48
Last Modified: 06 Nov 2012 16:48
URI: http://eprints.hud.ac.uk/id/eprint/15607

Available Versions of this Item

Item control for Repository Staff only:

View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©