Optimisation of surface measurement for metal additive manufacturing using coherence scanning interferometry

Gomez, Carlos and Su, Rong and Thompson, Adam and DiSciacca, Jack and Lawes, Simon and Leach, Richard K. (2017) Optimisation of surface measurement for metal additive manufacturing using coherence scanning interferometry. Optical Engineering, 56 (11). 111714/1-111714/8. ISSN 1560-2303

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Abstract

Surface topography measurement for metal additive manufacturing (AM) is a challenging task for contact and non-contact methods. In this paper, we present an experimental investigation of the use of coherence scanning interferometry (CSI) for measurement of AM surfaces. Our approach takes advantage of recent technical enhancements in CSI, including high dynamic range for light level and adjustable data acquisition rates for noise reduction. The investigation covers several typical metal AM surfaces made from different materials and AM processes. Recommendations for measurement optimisation balance three aspects: data coverage, measurement area and measurement time. This study also presents insight into areas of interest for future rigorous examination, such as measurement noise and further development of guidelines for the measurement of metal AM surfaces.

Item Type: Article
Keywords: coherence scanning interferometry, metal additive manufacturing, surface topography, metrology, roughness
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1117/1.OE.56.11.111714
Depositing User: Eprints, Support
Date Deposited: 14 Jul 2017 12:26
Last Modified: 17 Aug 2017 07:20
URI: http://eprints.nottingham.ac.uk/id/eprint/44198

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