20.500.12556/RUL-152118 Simultaneous non-contact identification of the elastic modulus, damping and coefficient of thermal expansion in 3D-printed structures Thermoplastic-extrusion 3D printing has gained popularity for the fabrication of electrothermal soft actuators that can control shape in response to temperature changes generated by embedded 3D-printed heaters. However, the material properties, such as the coefficient of thermal expansion, elastic modulus, and damping, significantly impact the performance of these 3D-printed electrothermal actuators. The material properties can be temperature-dependent, and vary based on the print and fill orientation. Current experimental methods cannot simultaneously research these properties, resulting in partial research of the influencing parameters. This research introduces a simultaneous and non-contact identification method for the elastic modulus, damping, and coefficient of thermal expansion, utilizing optical and thermal cameras, a scanning laser vibrometer, IR heating, and electrodynamic shaker excitation. The method was applied to several materials, including composites. The introduced method can fully characterize the 3D prints and the materials used for 3D printing, leading to the faster and more predictable development of future 3D-printed electrothermal actuators. elastic modulus coefficient of thermal expansion damping ratio glass-transition temperature 3D printing electrothermal actuators modul elastičnosti temperaturni razteznostni koeficient razmernik dušenja temperatura steklastega prehoda 3D-tisk elektrotermični aktuatorji true false true Angleški jezik Slovenski jezik Članek v reviji 2023-11-06 13:35:08 2023-11-06 13:35:15 2025-08-08 13:22:33 0000-00-00 00:00:00 2023 0 0 14 str. Vol. 125, art. 108131 Aug. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.3 0142-9418 10.1016/j.polymertesting.2023.108131 170982915 Krivic,_Slavic-Simultaneous_non-contact_identification_of_the_elastic_modulus,_damping_and_coefficient_of_thermal_expansion_in_3D-printed_structures.pdf Krivic,_Slavic-Simultaneous_non-contact_identification_of_the_elastic_modulus,_damping_and_coefficient_of_thermal_expansion_in_3D-printed_structures.pdf 1 864803A611DE08037447EF3CE243CB8E 130091f20c6fdd90aa6b71ab9a5d59e1235eebef62ef03e3941dac67b367683f 64e2d82c-7ca1-11ee-ba57-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177400 https://www.sciencedirect.com/science/article/pii/S0142941823002118 1 efd459b6-7ca0-11ee-ba57-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177399 Fakulteta za strojništvo 0 0 0