Artículo
An approach using highly sensitive carbon nanotube adhesive films for crack growth detection under flexural load in composite structures
Autor/es | Sánchez Romate, Xoan F.
Moriche Tirado, Rocío Jiménez Suárez, Alberto Sánchez Martínez, María Güemes, Alfredo Ureña Fernández, Alejandro |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Fecha de publicación | 2019-09 |
Fecha de depósito | 2023-12-14 |
Publicado en |
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Resumen | Sensing capabilities of carbon nanotube (CNT)doped adhesive films under bending conditions were investigated. Standard Mode-II coupons and skin-stringer sub-elements were manufactured while their electrical resistance was ... Sensing capabilities of carbon nanotube (CNT)doped adhesive films under bending conditions were investigated. Standard Mode-II coupons and skin-stringer sub-elements were manufactured while their electrical resistance was monitored. Mode-II energy fracture was improved when adding CNTs in comparison to neat adhesive joints due to their toughening effect. Electrical monitoring showed a stable increase of the electrical resistance with crack length with lower sensitivity than Mode-I testing due to a lower crack opening effect. A good agreement was observed by comparing to theoretical estimations, indicating a uniform adhesive distribution inside the joint, confirmed by SEM analysis. Monitoring tests on skin-stringer sub-elements subjected to bending load showed a similar behavior but some sharp increases were observed, especially in the last stages of the test, due to a less uniform adhesive distribution in the central region. Therefore, the proposed technique shows a high potential and applicability for Structural Health Monitoring of composite structures. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Gobierno de la Comunidad de Madrid |
Identificador del proyecto | MAT2016-78825-C2-1-R
2013/MIT-2862 |
Cita | Sánchez Romate, X.F., Moriche Tirado, R., Jiménez Suárez, A., Sánchez Martínez, M., Güemes, A. y Ureña Fernández, A. (2019). An approach using highly sensitive carbon nanotube adhesive films for crack growth detection under flexural load in composite structures. Composite Structures, 224, 111087. https://doi.org/10.1016/j.compstruct.2019.111087. |
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