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INVESTIGATION OF FATIGUE BEHAVIOR OF 3D PRINTED PLA BEAMS REINFORCED WITH CARBON FIBERS
(2022-08) Bawadikji, Husam
Using 3D printing technology has enabled researchers to manufacture complex parts more easily and in less time. One of the most common methods of 3D printing is the FDM method. This technology allows lightweight products to be built using different infill density. In this research, tensile test and fatigue test are applied to pure PLA and PLA reinforced with carbon fiber to investigate how main 3D printing parameters influence the tensile strength and Fatigue of PLA products. Samples are designed using two infill density percentage, 70% and 100%. The samples are also designed using 3 types of material: (pure PLA, PLA reinforced with 15% carbon fiber, and PLA reinforced with 20% carbon fiber). Tensile and fatigue experiments were conducted on the samples, and the results of the study concluded that the use of PLA, reinforced with 15% carbon fiber, is the one that achieves the highest mechanical properties. When the percentage of carbon fiber reaches 20%, the mechanical properties of the material deteriorate due to the effect of carbon fiber on the adhesion of the layers of the material during 3D printing.