Presentation
Thoughness determination in composite multimaterial closed corners
Author/s | Vicentini, Daniane F.
Barroso Caro, Alberto Justo Estebaranz, Jesús Mantic, Vladislav París Carballo, Federico |
Department | Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras |
Publication Date | 2011 |
Deposit Date | 2018-04-11 |
Published in |
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Abstract | 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 nonvanishing 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. |
Project ID. | P08-TEP-4071
P08-TEP-4051 MAT2009-14022 |
Citation | Vicentini, D.F., Barroso Caro, A., Justo Estebaranz, J., Mantic, V. y París Carballo, F. (2011). Thoughness determination in composite multimaterial closed corners. En International Conference on Composite Materials, Montreal, Canadá. |
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