Journal
MATERIALS
Volume 12, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/ma12060871
Keywords
porous materials; additive manufacturing; selective laser sintering; process parameters; sample orientation; tensile test; mechanical properties; energy absorption
Categories
Funding
- research project of the Romanian Ministry of Research and Innovation, CCCDI-UEFISCDI, within PNCDI III [PN-III-P1-1.2-PCCDI-2017-0391/CIA_CLIM-Smart]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available