Direct and indirect test techniques for measuring the tensile strength of brittle materials, an experimental study
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Karimi Hamid Reza, Aliha M. R. M., Mousavi Amir, Salehi S. M., Sadowski Tomasz |
| Dyscypliny: | |
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| Rok wydania: | 2025 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 82 |
| Numer artykułu: | 110756 |
| Strony: | 1 - 10 |
| Impact Factor: | 4,3 |
| Efekt badań statutowych | NIE |
| Finansowanie: | his work was supported (T.Sadowski) and funded under the grant “Subvention for Science” by the Ministry of Science and Higher Education of the Republic of Poland - project No. FD-20/IL-4/046. M.R.M. Aliha acknowledges the Polish National Agency for Academic Exchange (Grant No.ULAM NAWA BNI/ULM/2024/1/00180/UO/00001) for visiting scientists on sabbatical leave to visit Lublin University of Technology, Poland. Also, M.R.M. Aliha acknowledges the TÜB˙ITAK (Grant No. 2221-1059B212200747) program for visiting scientists on sabbatical leave to visit Gebze Technical University, Turkey. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| To address challenges associated with measuring the tensile strength of brittle materials, a comparative analysis was conducted on several specimens and a new test specimen. The new test method is a symmetrical bend disc (SBD) that can be prepared from in-field cores. Evaluations were performed employing direct tension, Brazilian disc, and three-point bending beam specimens. The samples were made of cement paste, a foundational construction material. The findings indicated that the tensile strength values derived from the direct tension test yielded the lowest estimates (1.93 ± 0.2 MPa), whereas those from the three-point bending beam were 2.71 ± 0.05 MPa, and those from the Brazilian disc ranged from 2.02 to 2.33 MPa. In comparison, the tensile strength recorded for the SBD ranged from 2.01 to 2.39 MPa. Analysis shows that specimen geometry and loading configuration have a significant effect on the measured tensile strength, so that by adjusting the thickness-to-diameter (t/D=0.3) and span-to-diameter (S/D=0.8) ratios, the exact value of tensile strength measured by direct tensile strength can be obtained. In these cases, the diameter value (100 and 150 mm in this study) also affects the results. After the experimental tests, numerical simulations were undertaken to investigate the stress distributions and fracture patterns characteristic of the specimens. Results showed that, compared with BD as the standard test method, which exhibits significant gradients in compressive-tensile strengths resulting in high coefficients of variation (about 10 %), while SBD exhibits lower gradients and lower coefficients of variation (about 4 %). |
