Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography
Laser Sintering is an Additive Manufacturing technique increasingly used to produce functional parts, with polyamide-12 (PA12) being by far the most processed material. It is common practice in industry to process a mix of recycled and virgin PA12 powder; however it is not yet fully understood how t...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/84382 http://hdl.handle.net/10220/41768 |
| _version_ | 1826118261430812672 |
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| author | Kruth, Jean-pierre Dewulf, Wim Pavan, Michele Craeghs, Tom Puyvelde, Peter Van |
| author2 | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) |
| author_facet | Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Kruth, Jean-pierre Dewulf, Wim Pavan, Michele Craeghs, Tom Puyvelde, Peter Van |
| author_sort | Kruth, Jean-pierre |
| collection | NTU |
| description | Laser Sintering is an Additive Manufacturing technique increasingly used to produce functional parts, with polyamide-12 (PA12) being by far the most processed material. It is common practice in industry to process a mix of recycled and virgin PA12 powder; however it is not yet fully understood how the Laser Sintering process parameters influence the microstructural composition for this mixture, namely the degree of crystallinity, the porosity characteristics and the distribution of the pores within the sintered parts. In this work X-ray Computed Tomography (CT) is used to investigate the porosity of tensile bars printed flatwise using a 50/50 mix of used and virgin PA12 processed with different Laser Sintering energy densities (EDs). Analysis of the pores characteristics and image processing of the CT-slices parallel to the building platform provide insights into the link between Laser Sintering process parameters, pores formation and their arrangement into the sintered polymer for different energy density levels. This information combined with the crystallinity values measured by Differential Scanning Calorimetry, gives a complete picture of the microstructure of the sintered material and its link with the resulting tensile properties. |
| first_indexed | 2024-10-01T04:40:49Z |
| format | Conference Paper |
| id | ntu-10356/84382 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:40:49Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/843822020-09-24T20:12:06Z Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography Kruth, Jean-pierre Dewulf, Wim Pavan, Michele Craeghs, Tom Puyvelde, Peter Van Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) Singapore Centre for 3D Printing X-ray Computed Tomography Laser Sintering Laser Sintering is an Additive Manufacturing technique increasingly used to produce functional parts, with polyamide-12 (PA12) being by far the most processed material. It is common practice in industry to process a mix of recycled and virgin PA12 powder; however it is not yet fully understood how the Laser Sintering process parameters influence the microstructural composition for this mixture, namely the degree of crystallinity, the porosity characteristics and the distribution of the pores within the sintered parts. In this work X-ray Computed Tomography (CT) is used to investigate the porosity of tensile bars printed flatwise using a 50/50 mix of used and virgin PA12 processed with different Laser Sintering energy densities (EDs). Analysis of the pores characteristics and image processing of the CT-slices parallel to the building platform provide insights into the link between Laser Sintering process parameters, pores formation and their arrangement into the sintered polymer for different energy density levels. This information combined with the crystallinity values measured by Differential Scanning Calorimetry, gives a complete picture of the microstructure of the sintered material and its link with the resulting tensile properties. Published version 2016-12-08T08:38:59Z 2019-12-06T15:44:01Z 2016-12-08T08:38:59Z 2019-12-06T15:44:01Z 2016 Conference Paper Pavan, M., Craeghs, T., Puyvelde, P. V., Kruth, J.-p., & Dewulf, W. (2016). Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), 569-574. https://hdl.handle.net/10356/84382 http://hdl.handle.net/10220/41768 en © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore 6 p. application/pdf |
| spellingShingle | X-ray Computed Tomography Laser Sintering Kruth, Jean-pierre Dewulf, Wim Pavan, Michele Craeghs, Tom Puyvelde, Peter Van Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title | Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title_full | Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title_fullStr | Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title_full_unstemmed | Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title_short | Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography |
| title_sort | understanding the link between process parameters microstructure and mechanical properties of laser sintered pa12 parts through x ray computed tomography |
| topic | X-ray Computed Tomography Laser Sintering |
| url | https://hdl.handle.net/10356/84382 http://hdl.handle.net/10220/41768 |
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