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.
2020
2020-05-06 10:36:46
1033
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
dk_c
Alen
Oseli
70
Benjamin
Bizjan
70
Elżbieta
Król
70
Brane
Širok
70
Lidija
Slemenik Perše
70
UDK
4
539.412(045)
ISSN pri članku
9
0950-0618
DOI
15
10.1016/j.conbuildmat.2020.119215
COBISS_ID
3
13922563
RAZ_Oseli_Alen_2020.docx
2265071
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2020-05-06 10:48:41
0
Izvorni URL
2020-05-06 10:36:55