Influence of SLS processing parameters according to the new mathematical model on flexural properties

Abstract

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is the selection of production parameters in selective laser sintering -SLS for the production of quality products (e.g. good mechanical properties). The manufacturing procedure affects the properties, which is especially significant in additive procedures, as the products are not cheap and the procedure and material need to be optimally selected. Design/methodology/approach -The paper presents an analysis of the fabrication parameters in selective laser sintering (SLS) that affect the flexural properties of the finished product. Findings -The influence of a new parameter has been found, the overlay ratio, and using the mathematical and scheme method, the selection of parameters for obtaining the optimal flexural properties has been proposed. Originality/value -The paper presents a new mathematical model for the calculation of the processing parameters in SLS of polymer products and gives a diagram for the determination of which parameters are the best to use for practical purposes.

Mode I Fracture Toughness of Polyamide and Alumide Samples obtained by Selective Laser Sintering Additive Process

“…Some authors have focused their work on the geometrical accuracy of samples obtained at different orientations and/or energy density by measuring the size and shape and inspecting the surface of the parts by stereomicroscopy [11][12][13] without taking into account the mechanical aspects that are directly influenced by the process parameters. The mechanical characterization of SLS polymer parts was conducted through tensile tests by some authors [14], while in other studies flexural properties were determined according to the manufacturing parameters [15,16]. However, the process parameters greatly influence the mechanical properties of the samples.…”

Influence of Manufacturing Parameters on Mechanical Properties of Porous Materials by Selective Laser Sintering

“…The technological parameters in the selective laser sintering (SLS) process generate a great influence on the mechanical properties of the resulting samples. Pilipovic et al [29] highlighted the main flexural properties of finished products, according to some manufacturing parameters. They focus on the influence of the energy density used in the sintering process.…”

Flexural properties of selectively sintered polyamide and Alumide

“…The mechanical characterization of SLS plastic parts was conducted through tensile tests by some authors, while in other studies, flexural properties were determined according to manufacturing parameters, leading to the conclusion that process parameters are greatly influencing the mechanical properties of samples.…”

“…1,2 The deflections from the nominal shape and size and also the mechanical properties of the obtained parts are representing a challenging aspect. 3,4 The mechanical characterization of SLS plastic parts was conducted through tensile tests by some authors, 5,6 while in other studies, flexural properties were determined according to manufacturing parameters, 7,8 leading to the conclusion that process parameters are greatly influencing the mechanical properties of samples.…”