Journal of Casting & Materials Engineering
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ISSN 2543-9901
Issue Date
2020
Volume
Vol. 4
Number
No. 3
Description
Journal Volume
Journal of Casting & Materials Engineering
Vol. 4 (2020)
Projects
Pages
Articles
A statistical analysis of evaporative pattern casting process parameters for the production of aluminum alloy components
(AGH University of Science and Technology Press, 2020) Omidiji, Babatunde Victor
Four process parameters were investigated with the aim of determining their influence on the mechanical properties of some test castings, bars, cylinders and plates. The influence was quantified in terms of percentage contribution. Analysis of variance (ANOVA), regression, main effects and interaction effects plots were employed to carry out the statistical analysis. As regards the tensile strength of the test castings, the geometry of components (GOC) dominated, contributing 90.83% and the pouring temperature (PT) contributed 91.90% influence on the hardness property. These dominating potentials of these two parameters limited the interaction of the parameters studied in the research.
Polylactide used as filment in 3D printing - Part 1: FTIR, DRIFT and TG-DTG studies
(AGH University of Science and Technology Press, 2020) Grabowska, Beata; Kaczmarska, Karolina; Cukrowicz, Sylwia; Mączka, Elżbieta; Bobrowski, Artur
A short literature review was undertaken in terms of the structure, properties and applications of polymers, including those commonly used in 3D printing. The research part included the structural and thermal analysis of polylactide (PLA), which is an example of an extensively used polymer in the developing 3D technology. Special attention was paid to the comparison of structure and thermal stability of two different (from various producers) polylactide samples. The research, involving such analytical methods as infrared spectroscopy (FTIR) and diffuse reflectance infrared spectroscopy (DRIFT), allowed the comparison of the structure of the two PLA samples considered. The determination of the temperature range in which changes related to PLA thermodestruction occur was a result of the performed thermoanalytical research (DRIFT, TG-DTG). Thermal studies also allowed to establish the temperature range in which the material does not yet degrade, which is important in the context of future planned research work on polylactide modification to obtain the improvement of the thermal and mechanical properties of PLA-based materials. This research area will be described in the second part of the publication.