Proyecto de Investigación:
RESISTENCIA Y TOLERANCIA AL DAÑO POR IMPACTO DE BAJA VELOCIDAD EN ESTRUCTURAS DE MATERIALES COMPUESTOS PROCESADOS MEDIANTE FABRICACION ADITIVA

Logotipo del proyecto

Colaboradores

Financiadores

ID

PID2021-122491OB-I00

Autores

Publicaciones

Miniatura
PublicaciónAcceso Abierto
Fiber bragg gratings sensor strain–optic behavior with different polymeric coatings subjected to transverse strain
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-04-27) González Gallego, Manuel; Terroba, F.; Martínez, J. L.; González del Val, Miguel; López Cela, Juan José; Frövel, M.; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
This research work is based on a previous study by the authors that characterized the behavior of FBG sensors with a polyimide coating in a structural monitoring system. Sensors applied to structural health monitoring are affected by the presence of simultaneous multidirectional strains. The previous study observed the influence of the transverse strain (ey) while keeping the longitudinal strain constant (ex), where the x direction is the direction of the optical fiber. The present study develops an experimental methodology consisting of a biaxial test plan on cruciform specimens with three embedded FBG sensors coated with polyimide, acrylate, and ORMOCER®. Applying the Strain–Optic Theory as a reference, a comparison of the experimental values obtained with the different coatings was studied. This experimental work made it possible to study the influence of the transverse strain (ey) on the longitudinal measurements of each FBGS and the influence of the coating material. Finally, the calibration procedure was defined as well as K (strain sensitivity factor) for each sensor.

Unidades organizativas

Descripción

Palabras clave

footer.link.logos.derechosLogo Acceso abiertoLogo PublicacionesLogo Autores
Logo Sherpa/RomeoLogo DulcineaLogo Creative CommonsLogo RecolectaLogo Open AireLogo Hispana