Effect of Infill Density and Infill Pattern on Mechanical Properties in Fused Deposition Modeling (FDM)

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ŞAHİN İ., TOP N., BÜLBÜL R., Yazar A.

Innovative Approaches in Additive Manufacturing Congress (IA4AM), Ankara, Turkey, 16 July 2021, pp.65-74

  • Publication Type: Conference Paper / Full Text
  • City: Ankara
  • Country: Turkey
  • Page Numbers: pp.65-74
  • Gazi University Affiliated: Yes

Abstract

While the final product is reached by extracting the material from the raw material in blocks in traditional manufacturing techniques, 3D models are obtained in a single process step by adding the raw material layer by layer in Additive Manufacturing (AM) technologies. 3D models obtained in Computer Aided Design (CAD) software can be saved in Stereolithography (stl) format and transferred directly to 3D printers. AM technologies, which produce the part closest to the CAD model with minimum waste material, are a revolution in the manufacturing industry. In addition to the advantages of AM technologies over traditional production methods, long printing times still pose a barrier to mass production processes. It is possible to reduce production time by changing the part orientation and printing parameters. Changing parameters also reduce costs by reducing the amount of material used and production time. In this study, sample pieces of 30 x 30 x 30 mm were produced using the Fused Deposition Modeling (FDM) machine, which works with the material extrusion technique from AM technologies. Polylactic acid (PLA) samples with 50%, 30% and 15% volumes of 70% were produced in 3 different patterns as octet, gyroid and triangle. The effects of infill density and infill pattern printing parameters on production time, amount of material and mechanical strength were investigated by applying compression test to the samples.