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      A Statistical Study of Surface Roughness for Polyamide 12 Parts Produced Using Selective Laser Sintering

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      International Polymer Processing

      Carl Hanser Verlag

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          Abstract

          Selective laser sintering (SLS) of thermoplastic powders allows for the creation of parts with complex geometries and functionally robust designs. Based on the principle of selectively fusing regions in a layer-by-layer process, SLS has gained increasing interest as an economical way to supplement small batch production for traditional manufacturing techniques. To introduce SLS parts into functionally demanding applications, it is imperative that they exhibit good surface quality to prevent wear caused by surface friction. Parts produced with SLS, however, typically have a higher surface roughness than those produced through traditional manufacturing techniques. Understanding the relationship between processing parameters and surface quality will allow one to better predict and control surfaces for end-use parts. A design of experiments was formulated to investigate the effects of four process parameters on parts produced across the powder bed: powder type, roller speed, laser power, and scan spacing. To analyze the surface roughness and area ratio of the parts, Focus Variation (FV) technology was implemented. Statistical models were developed to estimate the surface roughness and area ratio of manufactured specimens.

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          Most cited references 24

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          Dependence of mechanical properties of polyamide components on build parameters in the SLS process

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            Laser sintering of polyamides and other polymers

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              Surface roughness visualisation for rapid prototyping models

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                29 April 2020
                : 35
                : 2
                : 126-138
                Affiliations
                Polymer Engineering Center, University of Wisconsin-Madison, Madison, WI, USA
                Author notes
                [] Mail address: Sean Petzold, Polymer Engineering Center, University of Wisconsin-Madison, 1513 University Avenue, Madison, WI 53706-1572, USA, E-mail: spetzold@ 123456wisc.edu
                Article
                IPP3900
                10.3139/217.3900
                © 2020, Carl Hanser Verlag, Munich
                Page count
                References: 26, Pages: 13
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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