Analysis of two experimental setups to study mode II fracture on fibre-reinforced gypsum notched specimens
The main aim of this work is to study two relevant experimental setups designed for studying shear fracture and see if any of them allows studying the evolution of fracture under Mode II conditions, not only inducing a shear stress state at the onset of fracture. Two tests have been selected, a stan...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión borrador |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universidad de Jaén |
| Repositorio: | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| OAI Identifier: | oai:ruja.ujaen.es:10953/4779 |
| Acceso en línea: | https://doi.org/10.3989/mc.2023.325822 https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/3258 https://hdl.handle.net/10953/4779 |
| Access Level: | acceso abierto |
| Palabra clave: | Mode II Shear Push-off test Digital image correlation Fibre-reinforced gypsum 691.263.5 |
| Sumario: | The main aim of this work is to study two relevant experimental setups designed for studying shear fracture and see if any of them allows studying the evolution of fracture under Mode II conditions, not only inducing a shear stress state at the onset of fracture. Two tests have been selected, a standardised test described by a Japanese standard, here referred to as the JSCE test, and the push-off test. These tests have been carried out on fibre-reinforced gypsum specimens with increasing proportions of polypropylene fibres and monitored by means of digital image correlation (DIC). The results show that fracture under Mode II conditions is relatively easy to induce with both tests, but once fracture begins, it is extremely difficult to induce a fracture process under Mode II. In general, Mode II has an important role at the onset on fracture, but Mode I predominates afterwards. |
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