COMPRESSION BEHAVIOR OF DIFFERENT INFILL PATTERNS IN 3D PRINTING

Abo Elella, Menna Tullah Gamal; Ebeid, Samy Jimmy; Sayed, Moustafa Mamoud

doi:10.21608/auej.2025.362106.1783

COMPRESSION BEHAVIOR OF DIFFERENT INFILL PATTERNS IN 3D PRINTING

Document Type : Original Article

Authors

Design and Production Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.

10.21608/auej.2025.362106.1783

Abstract

This study investigates the influence of infill pattern arrangement and density on the compressive properties of Polylactic Acid (PLA) parts fabricated via Fused Deposition Modeling (FDM). Three distinct specimen types were created: single-infill patterns, and two-pattern combinations of triangle, honeycomb, and grid infill patterns. Specimens were printed at 20% and 50% infill densities to explore the combined effects of these parameters. Compression testing was conducted according to ASTM D695 using a universal testing machine at room temperature. The study analyzes compressive strength and energy absorption, correlating these properties with the different infill configurations and densities. The findings demonstrate that strategically combining different infill patterns can significantly enhance compressive strength compared to single-pattern designs. Specifically, (the grid plus honeycomb) patterns at 20% infill density and the (triangle plus Honeycomb) combination at 50% density exhibited the highest compressive strength, highlighting the potential for synergistic effects between different infill geometries Results highlight the significant impact of both infill pattern arrangements and density on the compressive behavior of PLA parts. The findings provide valuable insights for optimizing infill design to achieve desired mechanical properties in FDM-printed components, particularly for applications requiring specific compressive performance.

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