INVESTIGATING THE EFFECT OF THE INFILL DENSITY AND GEOMETRY ON SOME MECHANICAL PROPERTIES OF PETG COMPONENTS MANUFACTURED USING FUSED FILAMENT FABRICATION

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  • TITLE: INVESTIGATING THE EFFECT OF THE INFILL DENSITY AND GEOMETRY ON SOME MECHANICAL PROPERTIES OF PETG COMPONENTS MANUFACTURED USING FUSED FILAMENT FABRICATION
  • AUTHOR(S): N. Petrov
  • ABSTRACT: In this work the effect of the infill density and geometry on the tensile and flexural properties of polyethylene terephthalate glycol (PETG) samples prepared using fused filament fabrication (FFF) was investigated. The infill density was varied between 15 %, 25 %, and 35 %, and the samples were denoted as T1, T2, and T3, correspondingly. All samples exhibited similar tensile strength with the maximum one being 18.05 MPa of the 35 % infill density sample. The flexural strength of samples T1-T3 was nearly identical meaning the infill density did not have a major effect on it. Based on the performed mechanical tests, the highest infill density was chosen to prepare three more samples where the infill geometry was varied. Three infill geometries were used, namely a triangular one, a honeycomb one, and an octet one, with samples denoted at T4, T5, and T6, accordingly. The results indicated that the highest tensile force of 18.31 MPa was achieved by using a honeycomb infill pattern, however, the octet pattern sample exhibited the highest flexural strength of 32.40 MPa. Samples T5 and T6 also required the highest printing time and raw material input, thus increasing the material cost for production. However, the obtained results emphasize the importance of selecting an appropriate design for the desired application where an optimal choice between cost and functionality should be made.
  • DOI: https://doi.org/10.62853/LIVX2292
  • PAGES: 41-48
  • DOWNLOAD: INVESTIGATING THE EFFECT OF THE INFILL DENSITY AND GEOMETRY ON SOME MECHANICAL PROPERTIES OF PETG COMPONENTS MANUFACTURED USING FUSED FILAMENT FABRICATION
  • HOW TO CITE THIS ARTICLE: Petrov N. INVESTIGATING THE EFFECT OF THE INFILL DENSITY AND GEOMETRY ON SOME MECHANICAL PROPERTIES OF PETG COMPONENTS MANUFACTURED USING FUSED FILAMENT FABRICATION. Journal of the technical university of Gabrovo. 70 (2025) 41-48. https://doi.org/10.62853/LIVX2292