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Abstract:

The paper presents the research results of selected mechanical properties of models manufactured by the additive technology, Selective Laser Sintering (SLS). The material used to build the sample models was polyamide PA 3200 GF (reinforced with the addition of glass fiber). In addition, the research results were compared with the previously made test results obtained for pure polyamide PA 2200. The samples were subjected to two types of tests: measurement of mechanical properties determined during the uniaxial tensile test and an abrasive wear tests. The determination of the mechanical properties of the sample was carried out in accordance with the ASTM D638 standard. The measurement of abrasive wear was carried out on samples in the shape of rings. Three different angles between samples and building platform were chosen (0 degrees, 45 degrees and 90 degrees). Mechanical properties and tribological tests were carried out using the following machines: uniaxial testing machine, Inspekt mini 3kN and the tribological tester T-15 type ring on disc. The results of both strength tests and measurements of model wear confirm that the addition of fiberglass reduces the negative phenomenon of anisotropy in the aforementioned properties. In addition, it has been shown that the addition of glass fibers has a positive effect on both the strength of the models and their abrasive wear.

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Mechanical Properties of Models Prepared by SLS Technology