1. Biocompatibility and strength tests of PLA/SS316L composite material for orthopedic implant applications utilizing the 3D printing technique.
- Author
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Shamsudin, Shazarel, Ali, Abdulaziz, Kamarudin, Khairu, Al-Alimi, Sami, Altharan, Yahya M., and Ibrahim, Mustafa
- Subjects
POLYLACTIC acid ,ORTHOPEDIC implants ,THREE-dimensional printing ,COMPOSITE materials ,FUSED deposition modeling ,PRINTMAKING ,POLYMER clay - Abstract
Medical components made of titanium, steels, ceramic, and aluminium produced by metal injection moulding require different machining processes and creating a custom mould for each patient will limit the mould's flexibility. This research aimed at developing a Polylactic acid (PLA)/Stainless Steel (SS316L) composite filament for 3D printing and investigating the influence of the compounding ratio on the mechanical properties of PLA/SS 316L polymer composite printed by Fused Deposition Modelling (FDM) machine. The effects of SS316L content and melting temperature on tensile strength and impact strength of printed samples were analysed at 2%, 7%, and 12% weight percentage (wt.%) and 200°C, 210°C, and 220°C respectively. The SS 316L powder was added to PLA by weight percentage (wt.%), and 0.4 mm diameter nozzle was utilized during printing. At a 12% addition of SS316L, the tensile strength (TS) and Charpy impact strength (IS) were maximised to 52.832 MPa and 0.1275 kJ/m
2 respectively. A decreasing trend was observed for both properties with 2% and 7% of SS 316L addition. Moreover, when the temperature was set to 220°C, the TS increased for all composites regardless of the weight percentage. The optimized parameter setting by RSM was 12 wt.% and 220°C revealed the TS and IS at 54.04 MPa and 0.172 kJ/m2 . The errors between the predicted and experimental values for TS and IS were 1.4% and 4.65%. [ABSTRACT FROM AUTHOR]- Published
- 2023
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