On characterising surface topography of metal powder bed fusion additive manufactured parts

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Inherent to the somewhat uncontrolled nature of the additive process, the surfaces of metal powder bed fusion additively manufactured components tend to be very rough. Large isolated 'bumps', as one of the major defect features, are often present due to partially melted particles attached to the surface. An enhanced watershed segmentation method is proposed to separate these 'bump' features from the underlying surface texture such that the 'bumps' and underlying surface can be quantitatively analysed. The results show that the amplitude roughness parameters of the underlying surface are significantly less than the un-segmented surface and spatial roughness parameters differ between two surfaces. Characterising the extracted underlying surface and 'bumps' independently allows better correlation between surface measurements and additive system performance and hence AIDS in process optimization.

Original languageEnglish
Title of host publicationProceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016
Publishereuspen
Number of pages2
ISBN (Electronic)9780956679086
Publication statusPublished - 2016
Event16th International Conference of the European Society for Precision Engineering and Nanotechnology - East Midlands Conference Centre, Nottingham, United Kingdom
Duration: 30 May 20163 Jun 2016
Conference number: 16
https://www.euspen.eu/events/16th-international-conference-exhibition/ (Link to Conference Website)

Conference

Conference16th International Conference of the European Society for Precision Engineering and Nanotechnology
Abbreviated titleEUSPEN 2016
CountryUnited Kingdom
CityNottingham
Period30/05/163/06/16
OtherThis event offers the possibility to see latest advances in traditional precision engineering fields such as metrology, ultra precision machining, additive and replication processes, precision mechatronic systems & control and precision cutting processes.
Internet address

Fingerprint

metal powder
Powder metals
Surface topography
beds
topography
Fusion reactions
fusion
roughness
Surface roughness
acquired immunodeficiency syndrome
Surface measurement
Watersheds
surface roughness
textures
Textures
Defects
optimization
defects

Cite this

Lou, S., Townsend, A., Jiang, X., Blunt, L., Zeng, W., & Scott, P. (2016). On characterising surface topography of metal powder bed fusion additive manufactured parts. In Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016 euspen.
Lou, S. ; Townsend, A. ; Jiang, X. ; Blunt, L. ; Zeng, W. ; Scott, P. / On characterising surface topography of metal powder bed fusion additive manufactured parts. Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016. euspen, 2016.
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abstract = "Inherent to the somewhat uncontrolled nature of the additive process, the surfaces of metal powder bed fusion additively manufactured components tend to be very rough. Large isolated 'bumps', as one of the major defect features, are often present due to partially melted particles attached to the surface. An enhanced watershed segmentation method is proposed to separate these 'bump' features from the underlying surface texture such that the 'bumps' and underlying surface can be quantitatively analysed. The results show that the amplitude roughness parameters of the underlying surface are significantly less than the un-segmented surface and spatial roughness parameters differ between two surfaces. Characterising the extracted underlying surface and 'bumps' independently allows better correlation between surface measurements and additive system performance and hence AIDS in process optimization.",
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Lou, S, Townsend, A, Jiang, X, Blunt, L, Zeng, W & Scott, P 2016, On characterising surface topography of metal powder bed fusion additive manufactured parts. in Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016. euspen, 16th International Conference of the European Society for Precision Engineering and Nanotechnology, Nottingham, United Kingdom, 30/05/16.

On characterising surface topography of metal powder bed fusion additive manufactured parts. / Lou, S.; Townsend, A.; Jiang, X.; Blunt, L.; Zeng, W.; Scott, P.

Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016. euspen, 2016.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - On characterising surface topography of metal powder bed fusion additive manufactured parts

AU - Lou, S.

AU - Townsend, A.

AU - Jiang, X.

AU - Blunt, L.

AU - Zeng, W.

AU - Scott, P.

PY - 2016

Y1 - 2016

N2 - Inherent to the somewhat uncontrolled nature of the additive process, the surfaces of metal powder bed fusion additively manufactured components tend to be very rough. Large isolated 'bumps', as one of the major defect features, are often present due to partially melted particles attached to the surface. An enhanced watershed segmentation method is proposed to separate these 'bump' features from the underlying surface texture such that the 'bumps' and underlying surface can be quantitatively analysed. The results show that the amplitude roughness parameters of the underlying surface are significantly less than the un-segmented surface and spatial roughness parameters differ between two surfaces. Characterising the extracted underlying surface and 'bumps' independently allows better correlation between surface measurements and additive system performance and hence AIDS in process optimization.

AB - Inherent to the somewhat uncontrolled nature of the additive process, the surfaces of metal powder bed fusion additively manufactured components tend to be very rough. Large isolated 'bumps', as one of the major defect features, are often present due to partially melted particles attached to the surface. An enhanced watershed segmentation method is proposed to separate these 'bump' features from the underlying surface texture such that the 'bumps' and underlying surface can be quantitatively analysed. The results show that the amplitude roughness parameters of the underlying surface are significantly less than the un-segmented surface and spatial roughness parameters differ between two surfaces. Characterising the extracted underlying surface and 'bumps' independently allows better correlation between surface measurements and additive system performance and hence AIDS in process optimization.

KW - Additive manufacture

KW - Surface metrology

KW - Watershed segmentation

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BT - Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016

PB - euspen

ER -

Lou S, Townsend A, Jiang X, Blunt L, Zeng W, Scott P. On characterising surface topography of metal powder bed fusion additive manufactured parts. In Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016. euspen. 2016