The effect of the 3D printout filling parameter on the impact strength of elements made with the FDM method

Abstract

The paper discusses the aspects of potential use of 3D printing technology in the process of manufacturing elements with different layer fillings. In 3D printing technology, the denser the percentage of filling a material, the higher the mechanical strength of a given element. However, in the literature on the subject, the dependence on these parameters for additive technology has not been unequivocally determined. Therefore, the aim of the study is to find a correlation between the internal structure of the elements understood as a percentage of filling the material produced by 3D printing technology and the impact strength achieved by these elements. To carry out the research process, sets of polymeric samples were prepared using 3D FDM printing. The shape and dimensions of the samples were determined in accordance with the PN-EN 10045-1 standard. The samples were made by means of the Printo H3 device with a closed working chamber, using ABS polymer filament. The samples were filled with a percentage interval of 10%. Impact strength tests of polymeric samples were carried out on a Charpy hammer stand adapted for this purpose. In this way, the results concerning the breaking energy were collected for particular groups of samples. The collected data allowed us to determine the relationship between the percentage of filling the sample and the energy absorbed by the sample. The results provided the basis for conclusions and recommendations regarding one of the most important technological parameters – the percentage of printed element filling.

Optimization of Printing Process Variables and the Effect of Post-Heat Treatments on the Mechanical Properties of Extruded Polylactic Acid–Aluminum Composites

“…Numerous studies have examined how filling patterns and infill density affect specimen mechanical characteristics. Impact strength, elongation, and tensile strength have been discovered to be influenced by the infill density and raster direction [ 24 , 25 , 26 ]. It has been discovered that the internal architecture or infill pattern affects flexural features, friction coefficient, Poisson’s ratio, and stress values [ 27 , 28 , 29 ].…”

Finite element theoretical and experimental study on the dynamic characteristics of material extrusion thin plates

“…At present, a large number of scholars have studied the mechanical properties of ME products, such as tensile strength, [6][7][8][9] fracture toughness, [10][11][12] impact strength, [13][14][15][16] and fatigue property. [17][18][19] Many studies have shown that processing parameters have a significant effect on the performance of ME products.…”

Mould design optimisation by FEM

“…The finite element method is used to solve various problems in engineering by using FEM software packages. Numerical simulation of solidification facilitates obtaining highquality castings and minimising product cost and scrap [1][2][3][4]. FEM-based software for solving casting problems has high computational capabilities for low operating costs, and advances in simulation methodology have made simulation the most widely used and accepted method in operations research and systems analysis.…”