Ponencia
Behaviour of fibre/matrix interface cracks under biaxial stress state caused by edge effect in carbon/epoxy laminates
Título alternativo | Comportamiento de grietas de interfase ante estado biaxial de tensiones debido al efecto borde en laminados de carbono/epoxi |
Autor/es | Sánchez-Carmona, Serafín
Sandino de Benito, Carlos Correa Montoto, Elena Barroso Caro, Alberto París Carballo, Federico |
Departamento | Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras |
Fecha de publicación | 2024-01 |
Fecha de depósito | 2024-02-19 |
Publicado en |
|
ISBN/ISSN | 2531-0739 |
Resumen | A recent study about the ''edge effect'' phenomenon in cross-ply laminates made of ultrathin plies composites has shown the presence of a relevant stress component through the
laminate thickness. This fact implies that ... A recent study about the ''edge effect'' phenomenon in cross-ply laminates made of ultrathin plies composites has shown the presence of a relevant stress component through the laminate thickness. This fact implies that there is a biaxial stress state in the 90° ply block, which is present both before and after the cyclic loading tests. 4 cross-ply laminates were analysed, only varying the 90° ply block thickness. In each case, the biaxial stress state was obtained, selecting the most detrimental one to analyse the Energy Release Rate (G) with respect to the fibre/matrix interface crack growth. This analysis is performed using a BEM model from a previous study of the authors. An exhaustive microscopic revision is performed both before (only sanded and polished after curing process) and after cyclic testing, corroborating the occurrence of different crack growth of the present longitudinal fibre/matrix interface debonds. In conclusion, the single fibre numerical model using BEM and the experimental microscopic observations shed light on the micromechanical behaviour of the interface cracks which are subjected to a biaxial stress state. |
Agencias financiadoras | Universidad de Sevilla Consejería de Economía y Conocimiento, Junta de Andalucía Ministerio de Ciencia, Innovación y Universidades (MICINN). España |
Identificador del proyecto | VIPPIT-2018-II.2
P18-FR-3360 PID2021-126279OB-I00 |
Cita | Sánchez-Carmona, S., Sandino, C., Correa Montoto, E., Barroso Caro, A. y París, F. (2024). Behaviour of fibre/matrix interface cracks under biaxial stress state caused by edge effect in carbon/epoxy laminates, Materiales Compuestos (2024). Vol. 08 - Comunicaciones MATCOMP21 (2022) Y MATCOMP23 (2023), Núm. 3 - Caracterización - Daño, Fractura y Fatiga, p. 1-3 |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
MC_2024_Sanchez-Carmona_Behavi ... | 2.354Mb | [PDF] | Ver/ | Versión publicada |