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

Gomez, Carlos; Su, Rong; Thompson, Adam; DiSciacca, Jack; Lawes, Simon; Leach, Richard K.

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Authors

Carlos Gomez

Rong Su

Jack DiSciacca



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.

Journal Article Type Article
Acceptance Date Jul 10, 2017
Online Publication Date Jul 25, 2017
Publication Date Jul 25, 2017
Deposit Date Jul 14, 2017
Publicly Available Date Jul 25, 2017
Journal Optical Engineering
Print ISSN 0091-3286
Electronic ISSN 1560-2303
Publisher Society of Photo-optical Instrumentation Engineers
Peer Reviewed Peer Reviewed
Volume 56
Issue 11
Article Number 111714
Pages 1-8
DOI https://doi.org/10.1117/1.OE.56.11.111714
Keywords coherence scanning interferometry, metal additive manufacturing, surface topography, metrology, roughness
Public URL https://nottingham-repository.worktribe.com/output/965581
Publisher URL http://opticalengineering.spiedigitallibrary.org/article.aspx?articleid=2646551

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