Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84382
Title: Understanding The Link Between Process Parameters, Microstructure And Mechanical Properties Of Laser Sintered Pa12 Parts Through X-ray Computed Tomography
Authors: Kruth, Jean-pierre
Dewulf, Wim
Pavan, Michele
Craeghs, Tom
Puyvelde, Peter Van
Keywords: X-ray Computed Tomography
Laser Sintering
Issue Date: 2016
Source: 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.
Abstract: 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.
URI: https://hdl.handle.net/10356/84382
http://hdl.handle.net/10220/41768
Rights: © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:Pro-AM Conference Papers

Files in This Item:
File Description SizeFormat 
Understanding The Link Between Process Parameters.pdf189.89 kBAdobe PDFThumbnail
View/Open

Page view(s)

412
checked on Oct 21, 2020

Download(s)

242
checked on Oct 21, 2020

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.