20.500.12556/RUL-115997 Tensile properties of mineral fibers determined with Sentmanat extensional rheometer Within the presented research, we utilized a non-standard technique, i.e. Sentmanat Extensional Rheometer (shorter SER-tool), which can potentially provide tensile measurements (i.e. tensile strength and Young's modulus) on relatively short and brittle fibrous materials such as slag mineral fibers. For easier transportation and fastening of the fibers, physical model of SER-tool was slightly modified. Consequently, modified technique was theoretically (through parametric error analysis) and experimentally (through mechanical characterization) evaluated on four different types of mineral fibers. Despite a fair, yet distinguishable scatter of tensile strength which cannot be theoretically evaluated due to size effect (related to thermo-mechanical histories), fiber's weakest link (related to fiber defects), etc., mechanical response, which is universally presented by Young's modulus, was reproducible. Parametrical error analysis, which determines the accuracy of modified SER-tool showed that the large part of the error arises from the combination of fiber diameter and error in fiber diameter, however by careful selection of fibers (related to the magnitude of the diameter and its error) the result remains within the predicted ranges. From the results different types of mechanical responses can be observed, which is related to ceramic content, i.e. SiO2+Al2O3, within the slag fiber. Utilized technique demonstrates the high performance and the capability of modified SER-tool to perform various studies, investigating the effects of thermo-mechanical histories, chemical composition and other parameters on mechanical properties of single fiber filaments. slag mineral fibers chemical composition mechanical properties tensile strength Young's modulus Sentmanant extensional rheometer mineralna vlakna iz žlindre kemična sestava mehanske lastnosti natezna trdnost Yangov modul natezni reometri true false true Angleški jezik Slovenski jezik Članek v reviji 2020-05-06 10:36:46 2020-05-06 10:36:53 2022-08-28 03:46:43 0000-00-00 00:00:00 2020 0 0 Str. 1-12 Vol. 253 2020 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2022-04-13 539.412(045) 0950-0618 10.1016/j.conbuildmat.2020.119215 13922563 RAZ_Oseli_Alen_2020.docx RAZ_Oseli_Alen_2020.docx 1 2EC75E6DF9816D1F92FE2BBEA57C5C28 bf883d542303f20c965643969fba36d5ef542b13bcc553f9cadcd823948f7e67 cae380e1-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129389 https://www.sciencedirect.com/science/article/abs/pii/S0950061820312204#! 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129387 Fakulteta za strojništvo 0 0 0