STUDY OF STRENGTH CHARACTERISTICS OF PARTS OBTAINED BY FDM PRINTING FROM ABS AND COPET PLASTIC

Abstract

Additive technologies are promising for the field of mechanical engineering as they enable the creation of lightweight
structures with specified strength characteristics. 3D printing technologies are becoming increasingly popular due to their userfriendliness and the continual decrease in prices of technological equipment and materials. However, there is currently limited
information available regarding the mechanical properties of components printed using inexpensive open-source 3D printers.
The article focuses on studying the mechanical characteristics of components printed using FDM (Fused Deposition
Modeling) technologies. It demonstrates that parts manufactured through FDM using polymers are capable of withstanding
loads. The influence of infill density on the tensile strength of the components is determined. Deformation diagrams of samples
are constructed, from which mechanical properties and the nature of failure are identified. A comparative analysis of the
mechanical characteristics of two materials is conducted, along with an examination of the impact of infill density. As a result
of the analysis, it is established that the yield strength in samples made from the CoPet polymer is higher than in ABS. CoPet
samples exhibit plastic behavior, whereas ABS demonstrates brittle failure. These findings enable designers to make informed
decisions regarding the printing of elements with specified characteristics.