20.500.12556/RUL-175242 Fabrication and response testing of a hybrid cellular structure with the ability to transform cells formed into diamond-shaped silhouettes The development, production and application of an active hybrid cell structure are presented. The composite structure is built from two very different materials, the combination of which enables changing the external geometry of the product with a temperature variation. The base (matrix) is a biodegradable polymer produced using additive manufacturing, to which wires made of high-strength material with a shape memory effect are subsequently added. The two materials are built into specially designed cell shapes with progressively increasing cell sizes. Since the wires are made of NiTinol alloy, this enables temperature activation of the wire network, which triggers controlled changes of the structure’s geometry. For this purpose, three implementations of cell structures were made with an objective to find the most effective backward transformation of the cellular structure after the activation of the wires. The activation of the structure was tested both in hot air and in hot water. Numerical simulations confirmed experimental tests and showed the strong regeneration ability of the hybrid especially in the third version of the structure. Predstavljeni so razvoj, izdelava in možnosti uporabe aktivne hibridne celične strukture, zgrajena iz dveh povsem različnih materialov, ki v sodelovanju omogočata spremembo zunanje geometrije produkta. Osnova (matrica) je biorazgradljivi 3D tiskani polimer v katerega so naknadno vstavljene žice iz visoko-trdnostnega materiala z oblikovnim spominom SMA. Vse skupaj je načrtno povezano v posebne celične oblike, ki tvorijo površinsko progresivno naraščajočo strukturo vzorcev. Ker so žice izdelane iz zlitine NiTinol-a, to posledično omogoča temperaturno aktivacijo mreže mimobežno postavljenih žic, kar se odraža v možnosti kontroliranega spreminjanja geometrije strukture. V ta namen so bile izdelane tri izvedbe celičnih struktur s ciljem čim bolj efektivnega odziva geometrije celic matrice po aktivaciji žic. Aktivacija strukture je bila preizkušena tako na vročem zraku kot tudi v vroči vodi. Numerične simulacije in nato potrjeni eksperimentalni testi kažejo, zlasti pri tretji različici, na izrazito regeneracijsko sposobnost hibrida. additive manufacturing PLA NiTinol shape memory effect temperature activation FEM numerical simulation aditivna proizvodnja oblikovni spomin materiala temperaturna aktivacija numerična simulacija MKE true false true Angleški jezik Slovenski jezik Članek v reviji 2025-10-22 15:23:00 2025-10-22 15:23:05 2025-12-07 04:05:57 0000-00-00 00:00:00 2025 0 0 17 str. Vol. 259, art. 114822 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1:519.876.5 0264-1275 10.1016/j.matdes.2025.114822 254349571 Tomazincic_Fabrication_and_response.pdf Tomazincic_Fabrication_and_response.pdf 1 9054B19816B5C5331CBCC489AC966F1B fd15b9e1c923de7a23ee78a89ad2bd38d54bb73606afcabf0996192f36c07b66 c1b90b6e-b0ca-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=220861 Tomazincic_Izdelava_in_preizkus.pdf Tomazincic_Izdelava_in_preizkus.pdf 1 FE8401C6FE3CF4B43A74581482A577FF 82dc325960a1ab6ce9bbf0ab92cc77a5a0e4a7c3e1b6131e5821ac8509ef2061 78068e16-b30e-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=220959 https://www.sciencedirect.com/science/article/pii/S0264127525012420 1 f56afbfb-af49-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=220587 Fakulteta za strojništvo 0 0 0