Static and fatigue behavior of 3D printed PLA and PLA reinforced with short carbon fibers

• Published in: Journal of mechanical science and technology Vol. 37; no. 11; pp. 5555 - 5559
• Main Authors: Vălean, Estera, Foti, Pietro, Razavi, Seyed Mohammad Javad, Berto, Filippo, Marșavina, Liviu
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01-11-2023; Springer Nature B.V; 대한기계학회
• Subjects: Carbon fibers; Control; Dynamical Systems; Engineering; Fatigue strength; Fatigue tests; Fused deposition modeling; Industrial and Production Engineering; Mechanical analysis; Mechanical Engineering; Mechanical properties; Original Article; Polylactic acid; Tensile strength; Three dimensional models; Three dimensional printing; Vibration; 기계공학; Fatigue test; Additive manufacturing; Tensile test; FDM; Carbon fiber
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-023-2307-3

Fabrication based on additive manufacturing (AM) process from a threedimensional (3D) model has received significant attention in the last few years. The present paper presents the mechanical characterization of 3D printed specimens based on fused deposition modelling (FDM), which is one of the most commonly used AM methods. Tensile and fatigue tests were performed to characterize the quasi-static mechanical response and to evaluate the fatigue performance of FDM thermoplastic materials, respectively. The materials used to manufacture the specimens were polylactic acid (PLA) and PLA reinforced with short carbon fibers (CF). Good correlations were obtained between fatigue resistance and tensile strength for each type of material. It was also observed that the samples reinforced with CF present both lower tensile and fatigue properties. The poorer properties of PLA-CF specimens could be attributed to several reasons such as higher porosity and poorer adhesion between filament layers compared to the PLA counterparts.