Study the crushing behavior of 3D printed Poly Lactic Acid samples

Document Type : Research articles

Authors

1 Department of Manufacturing Technology, Modern Academy for Engineering and Technology in Maadi, Cairo, Egypt

2 Department of Mechanical Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

3 Department of Advanced Manufacturing at The Central Metallurgical Research and Development Institute (CMRDI) - Ministry of Scientific Research, Egypt, Cairo, Egypt

4 2 Department of Mechanical Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

Abstract

Engineering product designs are becoming more complicated in shape and need sustainability for longer lifetimes; there is a need for new technology like 3D printing for fabricating complex parts. Fused deposition modelling (FDM) is among the widely used additive manufacturing technology to fabricate quality products with effective expenses. This investigation considered significant methodological parameters: layer layouts/ patterns (triangular and rectilinear), wall thickness (1.2,3.6,6) and infilled density (70, 85 and 100%) analyzed to check out right into their results on compression and impact mechanical behaviors of 3D-printed Poly Lactic Acid pulse (PLA+), utilizing FDM 3D printing machine. The Central Composite Face-centered (CCF)technique was conducted to design an optimal number of experiments. The compression and impact tests were applied according to ASTM guidelines. The results showed that the Rectilinear samples were mechanically weaker than the Triangle samples, as the samples with 1.2 mm outer wall and 70% or 85% infill collapsed abruptly. The outer wall thickness was the most effective parameter for all samples, as the triangle sample with 6 mm walls and 85% infill had the highest compression and impact strength.

Keywords

Engineering Research Journal (Shoubra)
Volume 52, Issue 4
October 2023
Pages 77-81

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