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Performance study of non-contact surface measurement technology for use in an experimental fusion device

Brownhill, A; Robson, S; Brade, R; (2009) Performance study of non-contact surface measurement technology for use in an experimental fusion device. Proceedings of SPIE - The International Society for Optical Engineering , 7447 10.1117/12.825267.

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Abstract

Upgrade of the EFDA-JET experimental fusion device has generated interest in remote non-contact surface measurement of protective metallic tile surfaces inside the machine during shutdown periods. The measurement of gap and step features of 0.35-2mm and 0.04-0.2mm respectively, deposition and erosion on planar facets and the form of the complete vessel required specific testing to understand if existing systems could meet project requirements. This paper describes investigations against planar facets posed at differing angles to both fringe projection and tracked laser triangulation non-contact measurement technologies. System capabilities demonstrate typical plane fitting capabilities of the order of 20μm RMS, but highlight systematic discrepancies in the collected data. © 2009 SPIE.

Type:Article
Title:Performance study of non-contact surface measurement technology for use in an experimental fusion device
DOI:10.1117/12.825267
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Civil, Environmental and Geomatic Engineering

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