Internal surface measurement of metal powder bed fusion parts
Recent advances in X-ray computed tomography (XCT) have allowed for measurement resolutions approaching the point where XCT can be used for measuring surface topography. These advances make XCT appealing for measuring hard-to-reach or internal surfaces, such as those often present in additively manu...
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| Format: | Article |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50302/ |
| _version_ | 1848798214571950080 |
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| author | Thompson, Adam Senin, Nicola Maskery, Ian Körner, Lars Lawes, Simon Leach, Richard |
| author_facet | Thompson, Adam Senin, Nicola Maskery, Ian Körner, Lars Lawes, Simon Leach, Richard |
| author_sort | Thompson, Adam |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Recent advances in X-ray computed tomography (XCT) have allowed for measurement resolutions approaching the point where XCT can be used for measuring surface topography. These advances make XCT appealing for measuring hard-to-reach or internal surfaces, such as those often present in additively manufactured parts. To demonstrate the feasibility and potential of XCT for topography measurement, topography datasets obtained using two XCT systems are compared to those acquired using coherence scanning interferometry and focus variation microscopy. A hollow Ti6Al4V part produced by laser powder bed fusion is used as a measurement artefact. The artefact comprises two component halves that can be separated to expose the internal surfaces. Measured surface datasets are accurately aligned and similarly cropped, and compared by various qualitative and quantitative means, including the computation of ISO 25178-2 areal surface texture parameters, commonly used in part quality assessment. Results show that XCT can non-destructively provide surface information comparable with more conventional surface measurement technologies, thus representing a viable alternative to more conventional measurement, particularly appealing for hard-to-reach and internal surfaces. |
| first_indexed | 2025-11-14T20:16:13Z |
| format | Article |
| id | nottingham-50302 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:16:13Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-503022020-05-04T19:52:12Z https://eprints.nottingham.ac.uk/50302/ Internal surface measurement of metal powder bed fusion parts Thompson, Adam Senin, Nicola Maskery, Ian Körner, Lars Lawes, Simon Leach, Richard Recent advances in X-ray computed tomography (XCT) have allowed for measurement resolutions approaching the point where XCT can be used for measuring surface topography. These advances make XCT appealing for measuring hard-to-reach or internal surfaces, such as those often present in additively manufactured parts. To demonstrate the feasibility and potential of XCT for topography measurement, topography datasets obtained using two XCT systems are compared to those acquired using coherence scanning interferometry and focus variation microscopy. A hollow Ti6Al4V part produced by laser powder bed fusion is used as a measurement artefact. The artefact comprises two component halves that can be separated to expose the internal surfaces. Measured surface datasets are accurately aligned and similarly cropped, and compared by various qualitative and quantitative means, including the computation of ISO 25178-2 areal surface texture parameters, commonly used in part quality assessment. Results show that XCT can non-destructively provide surface information comparable with more conventional surface measurement technologies, thus representing a viable alternative to more conventional measurement, particularly appealing for hard-to-reach and internal surfaces. Elsevier 2018-03 Article PeerReviewed Thompson, Adam, Senin, Nicola, Maskery, Ian, Körner, Lars, Lawes, Simon and Leach, Richard (2018) Internal surface measurement of metal powder bed fusion parts. Additive Manufacturing, 20 . pp. 126-133. ISSN 2214-8604 X-ray computed tomography; Metrology; Surface texture; Metal powder bed fusion https://www.sciencedirect.com/science/article/pii/S2214860417302427 doi:10.1016/j.addma.2018.01.003 doi:10.1016/j.addma.2018.01.003 |
| spellingShingle | X-ray computed tomography; Metrology; Surface texture; Metal powder bed fusion Thompson, Adam Senin, Nicola Maskery, Ian Körner, Lars Lawes, Simon Leach, Richard Internal surface measurement of metal powder bed fusion parts |
| title | Internal surface measurement of metal powder bed fusion parts |
| title_full | Internal surface measurement of metal powder bed fusion parts |
| title_fullStr | Internal surface measurement of metal powder bed fusion parts |
| title_full_unstemmed | Internal surface measurement of metal powder bed fusion parts |
| title_short | Internal surface measurement of metal powder bed fusion parts |
| title_sort | internal surface measurement of metal powder bed fusion parts |
| topic | X-ray computed tomography; Metrology; Surface texture; Metal powder bed fusion |
| url | https://eprints.nottingham.ac.uk/50302/ https://eprints.nottingham.ac.uk/50302/ https://eprints.nottingham.ac.uk/50302/ |