Ponencia
A modified Brazilian test for the generalized-fracturetoughness determination in multimaterial corners. Numerical and experimental results
Autor/es | Vicentini, Daniane F.
Barroso Caro, Alberto Justo Estebaranz, Jesús Mantic, Vladislav París Carballo, Federico |
Departamento | Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras |
Fecha de publicación | 2011 |
Fecha de depósito | 2018-07-13 |
Publicado en |
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ISBN/ISSN | 978-84-692-5483-7 |
Resumen | In the present work, a general procedure for the experimental evaluation of the
generalized fracture toughness in multimaterial corners is defined. The proposed
method is suitable for closed corners (all material wedges ... In the present work, a general procedure for the experimental evaluation of the generalized fracture toughness in multimaterial corners is defined. The proposed method is suitable for closed corners (all material wedges being bonded) having two singular terms in the asymptotic stress representation at the corner tip. For a particular corner configuration, the method finds the load configuration at which one of the singular terms vanishes, thus the main stress contribution being controlled by the other non-vanishing singular term. The experimental test, until failure, using the previously defined load configuration allows the generalized fracture toughness associated to each singular term to be evaluated. The whole procedure has been applied to a bimaterial CFRP-Adhesive bimaterial corner and the generalized fracture toughness values have been obtained. The testing of mixed modes has permitted a failure envelope based on the generalized fracture toughness values at the corner tip to be defined. Previously published results, with different geometries, but involving the same corner, have shown that the failure envelope can predict accurately the failure initiation at these corners. |
Identificador del proyecto | P08-TEP-4071
P08-TEP-4051 MAT2009-14022 |
Cita | Vicentini, D.F., Barroso Caro, A., Justo Estebaranz, J., Mantic, V. y París Carballo, F. (2011). A modified Brazilian test for the generalized-fracturetoughness determination in multimaterial corners. Numerical and experimental results. En MATCOMP´11 (419-424), Girona: AEMAC (Asociación Española de Materiales Compuestos). |
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