Next Article in Journal
Strain Rate during Creep in High-Pressure Die-Cast AZ91 Magnesium Alloys at Intermediate Temperatures
Previous Article in Journal
Multifunctional Performance of a Nano-Modified Fiber Reinforced Composite Aeronautical Panel
Previous Article in Special Issue
Size-Dependent Free Vibration and Buckling of Three-Dimensional Graphene Foam Microshells Based on Modified Couple Stress Theory
Article Menu

Export Article

Open AccessFeature PaperArticle
Materials 2019, 12(6), 871; https://doi.org/10.3390/ma12060871

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

Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, 300 222 Timisoara, Romania
*
Author to whom correspondence should be addressed.
Received: 9 January 2019 / Revised: 22 February 2019 / Accepted: 11 March 2019 / Published: 15 March 2019
Full-Text   |   PDF [3175 KB, uploaded 15 March 2019]   |  
  |   Review Reports

Abstract

This paper presents a study on the tensile properties of Alumide and polyamide PA2200 standard samples produced by Additive manufacturing (AM) based on selective laser sintering (SLS). Because of the orthogonal trajectories of the laser beam during exposure, different orientations of the samples may lead to different mechanical properties. In order to reveal this process issue, four orientations of the samples in building envelope were investigated. For data reliability, all the other process parameters were constant for each material and every orientation. The tensile tests highlight small differences in elastic properties of the two materials, while significant differences in strength properties and energy absorption were observed. Nevertheless, Young modulus indicates high stiffness of the Alumide comparing to PA2200 samples. The stereo microscopy reveals a brittle fracture site for Alumide and a ductile fracture with longitudinal splitting zones for PA2200. From the orientation point of view, similar properties of samples oriented at 0 and 90 degrees for all investigated mechanical properties were observed. However, tensile strength was less influenced by the sample orientations. View Full-Text
Keywords: porous materials; additive manufacturing; selective laser sintering; process parameters; sample orientation; tensile test; mechanical properties; energy absorption porous materials; additive manufacturing; selective laser sintering; process parameters; sample orientation; tensile test; mechanical properties; energy absorption
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Stoia, D.I.; Linul, E.; Marsavina, L. Influence of Manufacturing Parameters on Mechanical Properties of Porous Materials by Selective Laser Sintering. Materials 2019, 12, 871.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top