Shear strength and shear energy measurement of brittle materials using two novel disc and beam shape configurations under asymmetrical three-point bend loading
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Karimi Hamid Reza, Aliha M. R. M., Mousavi Amir, Ghoreishi S. M.N. , Sadowski Tomasz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 493 |
| Numer artykułu: | 143165 |
| Strony: | 1 - 12 |
| Impact Factor: | 8,0 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | FD-20/IL-4/ 046. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Accurate measurement of shear strength in brittle materials remains challenging due to the complexity of existing test methods, which often require specialized specimens or loading fixtures (e.g., L-shape, shear-box). This study proposes two novel, practical testing methods, Asymmetrical Bend Disc (ABD) and Asymmetrical Bend Beam (ABB), to overcome these limitations. Both specimens utilize asymmetrical three-point bending to control shear-to-tensile stress contributions by varying support spans (S1, S2), enabling dominant shear failure at S2/D ≤ 0.1. Finite element analysis confirmed shear-dominated stress distributions (mode mixity, Me≥0.73), and experimental validation using cement paste demonstrated strong agreement with the Japan Society of Civil Engineers (JSCE) standard method. ABD and ABB yielded shear strengths of 4.0–4.7 MPa and 4.37–4.63 MPa, respectively, versus JSCE’s 4.43 MPa. The proposed methods simplify testing by using conventional three-point bending fixtures, minimize specimen preparation, and accommodate both isotropic and anisotropic materials. Shear fracture energy, however, is measured in the range of 1420–720 J/m2, indicating a need for further studies. |
