20.500.12556/RUL-154842 Mehanska, ekonomska in ekološka primerjava različnih materialov vlaken pri kompozitni sendvič konstrukciji Mechanical, economical, and ecological comparison of fiber materials for composite sandwich construction Uporaba kompozitnih materialov v industriji, še posebej v navtični, je zelo pogosta. Kupci na proizvajalce pritiskajo z zahtevo po čim cenejših izdelkih, ki so obenem tudi v skladu z ekološkimi smernicami. Proizvajalci morajo tem zahtevam slediti, obenem pa poskrbeti še za to, da so izdelki mehansko ustrezni. V diplomski nalogi med seboj primerjamo steklena, ogljikova, bazaltna in lanena vlakna iz mehanskega, ekonomskega in ekološkega stališča. Z enostavnim teoretičnim modelom smo izračunali karakteristike materialov nato pa izdelali preizkušance in izmerili njihovo togost z upogibnim preizkusom. Primerjali smo izračune in meritve, prav tako smo obravnavali rezultate izračunov cen in ogljičnega odtisa posameznega materiala. Pokazalo se je, da so različni materiali najboljši iz posameznega vidika: ogljikova vlakna imajo najboljše mehanske lastnosti, iz ekonomskega stališča so najboljša najbolj razširjena steklena vlakna, iz ekološkega stališča prednjačijo bazaltna vlakna. Lanena vlakna so težka, imajo visoko ceno in večji ogljični odtis zaradi veliko uporabljene smole, zato jih v tem kontekstu ni smiselno uporabljati. Usage of composites in industries is very common, especially in naval industry. Buyers demand affordable products that also adhere to environmental guidelines. Manufacturers must follow those demands as well as ensuring mechanical adequacy. A comparison was made between glass, carbon, basalt, and flax fiber from mechanical, economic, and ecological viewpoints. Using a simple theoretical model, we determined the characteristics of the materials and manufactured samples, which were subjected to bend tests to measure their stiffness. We have compared calculations with measurement, and also examined the prices and carbon footprint of each material. The result showed that different materials are best from different viewpoints: carbon fiber has the best mechanical properties, from economical perspective the most widely used glass fiber is the best and from ecological perspective basalt fiber proves it’s dominance. Flax fiber are heavy, expensive and have higher carbon footprint due to double of resin used to make it, that’s why their usage in this context is not reasonable. kompozitni materiali primerjava ojačitvenih vlaken cene vlaken ogljični odtis sendvič konstrukcija navtika composite materials fiber comparison fiber prices carbon footprint sandwich construction naval industry true false false [M. Vrečko] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-03-06 07:30:22 2024-03-06 07:30:26 2024-03-12 10:11:27 0000-00-00 00:00:00 2024 0 Ljubljana 0 XX, 33 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1:624.073:678.6:629.5(043.2) 259985 188504067 32883.pdf 32883.pdf 1 C574D6AA04F5ACFD8337D4DDFD041E11 3ca99e47ecd93225842dd75f64b7c37a98695fe11772e00900b0676c5a52a7c7 04bd6385-db83-11ee-bf12-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=181462 Fakulteta za strojništvo 0 0 0