Research on optical measurement for additive manufacturing surfaces

Surfaces made by Additive Manufacturing (AM) processes normally show higher roughness and more complicated microstructures than conventional machined surfaces. In this study, AM surface roughness measurements using both tactile and optical techniques are analyzed, theoretically and experimentally. A...

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Main Authors: Cheng, Fang, Fu, Shao Wei, Leong, Yong Shin
Other Authors: Asundi, Anand K.
Format: Article
Language:English
Published: 2019
Subjects:
Online Access:https://hdl.handle.net/10356/106355
http://hdl.handle.net/10220/49581
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1063552023-03-04T17:22:22Z Research on optical measurement for additive manufacturing surfaces Cheng, Fang Fu, Shao Wei Leong, Yong Shin Asundi, Anand K. Huang, Xiyan Xie, Yi School of Mechanical and Aerospace Engineering Fourth International Conference on Optical and Photonics Engineering Engineering::Mechanical engineering Additive Manufacturing Surface Topography Surfaces made by Additive Manufacturing (AM) processes normally show higher roughness and more complicated microstructures than conventional machined surfaces. In this study, AM surface roughness measurements using both tactile and optical techniques are analyzed, theoretically and experimentally. Analytical results showed both techniques have comparable performance when measuring AM samples with good surface integrity. For surfaces with steep features, coherence scanning interferometry showed more reliable performance especially when peak-to-valley value was required. In addition of the benchmarking study, development of a low-cost measurement system, using laser confocal technology, is also presented in this paper. By comparing the measurement results with those from a coherent scanning interferometer, accuracy levels of the proposed system can be evaluated. It was concluded that with comparable accuracy, the proposed low-cost optical system was able to achieve much faster measurements, which would make it possible for in-situ surface quality checking. Published version 2019-08-07T07:15:14Z 2019-12-06T22:09:45Z 2019-08-07T07:15:14Z 2019-12-06T22:09:45Z 2017 Journal Article Cheng, F., Fu, S. W., & Leong, Y. S. (2017). Research on optical measurement for additive manufacturing surfaces. Proceedings of SPIE - International Conference on Optical and Photonics Engineering, 10250, 102501F. doi:10.1117/12.2266653 0277-786X https://hdl.handle.net/10356/106355 http://hdl.handle.net/10220/49581 10.1117/12.2266653 en Proceedings of SPIE - International Conference on Optical and Photonics Engineering © 2017 SPIE. All rights reserved. This paper was published in Proceedings of SPIE - International Conference on Optical and Photonics Engineering and is made available with permission of SPIE. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Additive Manufacturing
Surface Topography
spellingShingle Engineering::Mechanical engineering
Additive Manufacturing
Surface Topography
Cheng, Fang
Fu, Shao Wei
Leong, Yong Shin
Research on optical measurement for additive manufacturing surfaces
description Surfaces made by Additive Manufacturing (AM) processes normally show higher roughness and more complicated microstructures than conventional machined surfaces. In this study, AM surface roughness measurements using both tactile and optical techniques are analyzed, theoretically and experimentally. Analytical results showed both techniques have comparable performance when measuring AM samples with good surface integrity. For surfaces with steep features, coherence scanning interferometry showed more reliable performance especially when peak-to-valley value was required. In addition of the benchmarking study, development of a low-cost measurement system, using laser confocal technology, is also presented in this paper. By comparing the measurement results with those from a coherent scanning interferometer, accuracy levels of the proposed system can be evaluated. It was concluded that with comparable accuracy, the proposed low-cost optical system was able to achieve much faster measurements, which would make it possible for in-situ surface quality checking.
author2 Asundi, Anand K.
author_facet Asundi, Anand K.
Cheng, Fang
Fu, Shao Wei
Leong, Yong Shin
format Article
author Cheng, Fang
Fu, Shao Wei
Leong, Yong Shin
author_sort Cheng, Fang
title Research on optical measurement for additive manufacturing surfaces
title_short Research on optical measurement for additive manufacturing surfaces
title_full Research on optical measurement for additive manufacturing surfaces
title_fullStr Research on optical measurement for additive manufacturing surfaces
title_full_unstemmed Research on optical measurement for additive manufacturing surfaces
title_sort research on optical measurement for additive manufacturing surfaces
publishDate 2019
url https://hdl.handle.net/10356/106355
http://hdl.handle.net/10220/49581
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