Hydrogel as a Medium for Fluid-Driven Fracture Study
| Autor: | Niall O'Keeffe, Paul Linden |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Aerospace Engineering Modulus Context (language use) Fracture mechanics 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology 01 natural sciences Brittleness Hydraulic fracturing Mechanics of Materials 0103 physical sciences Solid mechanics Fracture (geology) Geotechnical engineering 010306 general physics 0210 nano-technology Material properties |
| Zdroj: | Experimental Mechanics. 57:1483-1493 |
| ISSN: | 1741-2765 0014-4851 |
| Popis: | In this paper we describe how to construct polyacrylamide hydrogels to study the processes linked with hydraulic fracturing. These transparent, linearly elastic and brittle gels permit fracturing at low pressures and speeds allowing accurate measurements to be obtained. In the context of hydraulic fracturing, the broad range of modulus and fracture energy values that are attainable allow experimental exploration of particular regimes of importance. We also describe how material properties may be deduced from hydraulic fracturing experiments. Lastly, we analyse the fracture surface patterns that emerge from fluid-driven cracks occurring within the medium. These patterns are similar to those that have been observed in other materials and we comment on their fractal-like nature. |
| Databáze: | OpenAIRE |
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