20.500.12556/RUL-121580 Altering the elastic properties of 3D printed poly-lactic acid (PLA) parts by compressive cyclic loading In designing high-performance, lightweight components, cellular structures are one of the approaches to be considered. The present study aimed to analyze the effect of the infill line distance of 3D printed circular samples on their compressive elastic behavior. Lightweight cellular poly-lactic acid (PLA) samples with a triangular infill pattern were exposed to cyclic compressive loading and their stiffness was investigated. PLA is one of the most commonly used thermoplastic materials in additive manufacturing using the fused filament fabrication (FFF) process. 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). 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. Furthermore, an analysis of the dependence of the modulus of elasticity on the effects of cyclic loading was performed. It was found that through elastic deformation, and combined elastic and plastic deformation, the samples’ properties such as stiffness could be altered. 3D printing compression test cyclic loading FFF PLA infill line distance loading–unloading 3D tiskanje FFF PLA tlačni preizkus ciklično obremenjevanje true false true Angleški jezik Slovenski jezik Članek v reviji 2020-10-16 11:29:30 2020-10-16 11:29:37 2022-09-02 04:00:01 0000-00-00 00:00:00 2020 0 0 18 str. iss. 19, art. 4456 Vol. 13 Oct. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.92:620.173(045) 1996-1944 10.3390/ma13194456 32536579 RAZ_Pepelnjak_Tomaz_2020.pdf RAZ_Pepelnjak_Tomaz_2020.pdf 1 CFE797260CD383B19B910690AE562512 e78c2f8580ac8fd28f8cfa66439f8ac92a8824f9cbc1245c197ee8fcac3122ef 1f788307-7abc-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153155 https://www.mdpi.com/1996-1944/13/19/4456 0 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=136557 Fakulteta za strojništvo 0 0 0