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...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/106355 http://hdl.handle.net/10220/49581 |
| _version_ | 1811681719841980416 |
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| author | Cheng, Fang Fu, Shao Wei Leong, Yong Shin |
| author2 | Asundi, Anand K. |
| author_facet | Asundi, Anand K. Cheng, Fang Fu, Shao Wei Leong, Yong Shin |
| author_sort | Cheng, Fang |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T03:45:25Z |
| format | Journal Article |
| id | ntu-10356/106355 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:45:25Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-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 |
| spellingShingle | Engineering::Mechanical engineering Additive Manufacturing Surface Topography Cheng, Fang Fu, Shao Wei Leong, Yong Shin Research on optical measurement for additive manufacturing surfaces |
| title | 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_short | Research on optical measurement for additive manufacturing surfaces |
| title_sort | research on optical measurement for additive manufacturing surfaces |
| topic | Engineering::Mechanical engineering Additive Manufacturing Surface Topography |
| url | https://hdl.handle.net/10356/106355 http://hdl.handle.net/10220/49581 |
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