Lookup NU author(s): Stephen Akande,
Professor Kenneth Dalgarno,
Dr Javier Munguia Valenzuela
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The aim of this study was to identify the optimum set of tests required for quality assurance purposes when selectively laser sintering polyamide powders. Both Nylon 11 and Nylon 12 powders are considered, and the tensile, flexural and impact properties are assessed, together with dimensional accuracy, density and melt flow index (MFI). It is concluded that MFI and strength are key measures, with impact strength the preferred strength measure because of its practicality. The MFI and strength measures may be augmented by assessment of dimensional accuracy and density for particular applications. Additional testing beyond these measures did not provide further significant information with regard to the mechanical integrity or dimensional accuracy of the output from a build.
Author(s): Akande SO, Dalgarno KW, Munguia J, Pallari J
Publication type: Article
Journal: Journal of Materials Processing Technology
Online publication date: 19/10/2015
Acceptance date: 08/10/2015
Print publication date: 01/03/2016
ISSN (print): 0924-0136
ISSN (electronic): 1873-4774
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