Title: Impact of input parameters variability on surface roughness and density on laser sintered AlSi10Mg specimens

Authors: Ritesh Sharma; Sanjeev Kumar; Rajeev Kumar Saha

Addresses: Department of Mechanical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana 121006, India ' Department of Mechanical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana 121006, India ' Department of Mechanical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana 121006, India

Abstract: Process parameters significantly influence the properties of the specimen in any manufacturing system. Laser sintering is no exception when it comes to properties like surface roughness; density or mechanical properties. The present study is focused on evaluating the influence of process parameters specifically laser power, scan speed, hatch spacing and orientation on part properties namely density and surface roughness of the specimens sintered on selective laser melting of AlSi10Mg alloy. To delineate the parameters, the design of experiments was created using RSM. The data so received by conducting the experiments and observing the readings of the outcomes under study were analysed using ANOVA analysis. The optimisation was carried out using MATLAB software with optimisation toolbox. Hatch spacing proved to be the major contributor for influencing both density as well as surface roughness when the final outcomes were investigated.

Keywords: AlSi10Mg; surface roughness; density; response surface methodology; RSM; selective laser melting; SLM; ANOVA.

DOI: 10.1504/IJPQM.2021.118083

International Journal of Productivity and Quality Management, 2021 Vol.34 No.1, pp.84 - 101

Received: 28 Aug 2019
Accepted: 20 Feb 2020
Published online: 12 Oct 2021 *

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