Article
Evaluation of sensitivity for detecting different failure modes of epoxy matrix composites doped with graphene nanoparticles
Author/s | Sánchez Martínez, María
Moriche Tirado, Rocío González Prolongo, Silvia Marrón, A. R. Jiménez Suárez, Alberto Ureña Fernández, Alejandro |
Department | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Publication Date | 2019-10 |
Deposit Date | 2023-12-14 |
Published in |
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Abstract | In recent years, the interest in monitoring the damage of composite materials by measuring the variation of electrical resistance is increasing because deformations and cracks generated in the structure produce changes in ... In recent years, the interest in monitoring the damage of composite materials by measuring the variation of electrical resistance is increasing because deformations and cracks generated in the structure produce changes in the electrical conductivity of the material. In this work, the structural integrity of glass fiber composite materials with epoxy matrix doped with graphene nanoparticles is evaluated under in plane tests (interlaminar shear tests and fracture propagation tests in mode I and II). The results demonstrated the ability of graphene nanoparticles to form conductive networks in the epoxy resin with auto-detection capability of deformation and damage. In the interlaminar shear tests, permanent changes in resistance were associated to strain and delamination produced during the test. In the case of fracture tests in mode I and II, the electrical resistance increased as the crack grew. The use of multiple electrodes has also allowed locating the area of damage generation in the material. Finally, the electrical response of discontinuities generated out of plane of the laminate was analyzed by means of cuts through the material. |
Funding agencies | Ministerio de Economía y Competitividad (MINECO). España Gobierno de la Comunidad de Madrid |
Project ID. | MAT2016-78825-C2-1-R
P2013/MIT-2862 |
Citation | Sánchez Martínez, M., Moriche Tirado, R., González Prolongo, S., Marrón, A.R., Jiménez Suárez, A. y Ureña Fernández, A. (2019). Evaluation of sensitivity for detecting different failure modes of epoxy matrix composites doped with graphene nanoparticles. Composite Structures, 225, 111167. https://doi.org/10.1016/j.compstruct.2019.111167. |
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