Micromechanical Analysis of the Kink-Band Performance at the Interface of a Thermoplastic Composite Under Tensile Deformation
The manufacture of thermoplastic composites nor- mally involves compression molding that generates fiber dislocations known as kink-bands, which create stress concentrations able to cause the premature compression failure of a composite; nevertheless, the kink-band influence over the interfacial perfo...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2010 |
| País: | México |
| Institución: | Centro de Investigación Científica de Yucatán |
| Repositorio: | Repositorio Institucional CICY |
| Idioma: | inglés |
| OAI Identifier: | oai:cicy.repositorioinstitucional.mx:1003/194 |
| Acceso en línea: | http://cicy.repositorioinstitucional.mx/jspui/handle/1003/194 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3312 |
| Sumario: | The manufacture of thermoplastic composites nor- mally involves compression molding that generates fiber dislocations known as kink-bands, which create stress concentrations able to cause the premature compression failure of a composite; nevertheless, the kink-band influence over the interfacial performance or failure of a composite tested under tension is not fully understood. This work uses Raman spectroscopy as a tool to map the axial stress distribution around a kink-band in an aramid/low density polyethylene single fiber composite. The stress distribution along the fiber was fitted to a generalized shear-lag model to calculate the interfacial shear stress; its maximum was found around the kink-band where the fiber interface was still bonded to the matrix, defining a localized stress concentration. |
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