Abstract
The article contains an analysis of the applied thermoplastics used in prototyping parts of mechatronic complexes. Several types of experimental samples with different percent of filling are presented. Shown is the equipment on which the experimental studies were carried out. During the experiments, a specialized tensile testing machine was used. Experimental samples were installed in the developed centering device. Normal conditions were observed during the tests. The results of an experimental tensile study of PLA–plastic samples are presented. A characteristic stress–strain diagram of an experimental sample is described, which describes the dependence of stress on relative deformation. An equation of the linear dependence of the tensile strength on the percentage of filament filling has been compiled, which makes it possible to determine the ultimate strength of the product at any percentage of the filling of the plastic filament. Adequacy assessment is verified by Fisher's criterion. Recommendations are given on filament filling when prototyping machine parts.
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