Fictitious crack modelling of polymethyl methacrylate porous material
| Autor: | E.Jimenez Pique, L.J.M.G. Dortmans, G. de With |
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| Přispěvatelé: | Materials and Interface Chemistry, Technisch Physische Dienst TNO - TH |
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Polymethyl methacrylates
White ware castings business.product_category Materials science Fracture testing Fictitious cracks Plastics casting Thermal effects Fracture toughness General Materials Science Porous materials Composite material Porosity Softening Mechanical Engineering Fracture mechanics Condensed Matter Physics Plastic molds Wedge (mechanical device) Fracture modelling Polymeric mould material Polymethyl methacrylate Mechanics of Materials Fracture (geology) Electronics business Porous medium Beam (structure) Force-diplacement curves |
| Zdroj: | Materials Science and Engineering A, 1-2, 335, 217-227 Materials Science and Engineering A, A335(1-2), 217-227. Elsevier |
| ISSN: | 0921-5093 |
| Popis: | Fracture tests were performed on a granular polymethyl methacrylate porous material used as a mould for white were castings. Two types of sample geometry (single-edge notch beam and wedge opening load) and two types of environment (dry at room temperature and in water at 45°C) were used and the force-displacement curves were measured. The fictitious crack model with a bilinear softening curve was used to fit the experimental data resulting in an excellent agreement for all types of test. From the values of the fracture energy it is concluded that the measurement of the fracture toughness cannot be performed through a maximum peak load experiment for the given sample size and geometry. A comparison of the fracture surfaces under both conditions is made and an explanation for the different types of morphology is proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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