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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/195| A study of the fracture toughness of acrylic composites using the essential work of fracture method | |
| PEDRO JESUS HERRERA FRANCO | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| The Essential Work Fracture approach was used in order to calculate the fracture toughness of acrylic composites. The composite materials were formulated with polymethylmethacrylate (PMMA) as a matrix and either core–shell or multi-layer particles with 10 or 20% volume content. Double-Edge Notched Tension (DDENT) specimens were tested in a universal testing machine at 2 mm/min. It was found that the values of the specific essential work of fracture, we, increased with increase of the particle content. The composites prepared with 10 and 20% core–shell particles reached values of 4.63 and 9.72 kJ/m2, respectively, whereas the composites formulated with 10 and 20% multi-layer particles reached values of 8.36 and 8.42 kJ/m2, respectively. The nonspecific value of fracture for the multi-layer particle composites was found to yield a negative slope, however, from Scanning Electron Microscopy (SEM) micrographs, ductile-to-brittle behavior was observed, i.e., unstable crack growth. | |
| 13-05-2010 | |
| Artículo | |
| Inglés | |
| TECNOLOGÍA DE MATERIALES | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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