![]() , which investigated the sustainability of thermoplastics one by Chacon et al. Due to the interest shown by the scientific community and the attractiveness of the subject, some recent publications have focused on the mechanical characteristics of the produced parts using FFF technology. The results show that the products printed by home desktop 3D printers (e.g., the RepRap 3D printer with low cost and small size that can be used at home, universities, etc.) using the FFF method can exhibit tensile strength equal to that of the products produced by commercial printers. Studies and research conducted over the past few years on the mechanical properties of products manufactured by 3D printers have aimed to enable the production of better and more capable products. In this article, the mechanical behavior of PLA parts produced by FFF technology is investigated. PLA is a biodegradable polymer and is currently used in packaging and for the production of disposable parts studies are being conducted on these parts in order to develop improvements that would allow the use of PLA in durable applications. According to many researchers, PLA can be a suitable replacement for ABS plastic, which is toxic for this reason, the use of PLA in desktop 3D printing is increasing. Thermoplastic polymer materials most commonly used for extrusion in additive manufacturing by the FFF method are poly-lactic acid (PLA) and acrylonitrile butadiene styrene (ABS). ![]() Through the efforts of the scientific and research community, properties such as the strength of materials used in 3D printing have been improved. In addition to reducing waste, this method also enables the fabrication of parts with complex geometries while requiring little supervision and protection during production. This technology, as part of the AM concept, has become very popular in recent years due to the increasing availability of low-cost small and portable 3D printers. There is an increasing demand for knowledge on how to properly use and benefit from fused filament fabrication (FFF) technology. Material extrusion is the most widespread AM technology. 3D printing is a typical example of an AM technology and one that has gained in popularity over the previous decade due to the reduction in the costs of printing equipment and materials as well as its broad applicability and implementation into Industry 4.0. ![]() It was found that through elastic deformation, and combined elastic and plastic deformation, the samples’ properties such as stiffness could be altered.Īdditive manufacturing (AM) methods, and 3D printing, in particular, are highly important for industry. Furthermore, an analysis of the dependence of the modulus of elasticity on the effects of cyclic loading was performed. Comparing the nominal compressive stress-nominal strain curves under cyclic loading showed that the first cycle response was significantly different with respect to the subsequent ones. Cylindrical samples with a diameter of 11.42 mm and a height of 10 mm were printed using FFF technology with two different infill line distances (1.6 mm and 2.4 mm). PLA is one of the most commonly used thermoplastic materials in additive manufacturing using the fused filament fabrication (FFF) process. Lightweight cellular poly-lactic acid (PLA) samples with a triangular infill pattern were exposed to cyclic compressive loading and their stiffness was investigated. The present study aimed to analyze the effect of the infill line distance of 3D printed circular samples on their compressive elastic behavior. In designing high-performance, lightweight components, cellular structures are one of the approaches to be considered. ![]()
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