RT Journal Article
T1 Embedded Fiber Bragg Grating Sensors for Monitoring Temperature and Thermo-Elastic Deformations in a Carbon Fiber Optical Bench
A1 Fernández Medina, Ana
A1 Frövel, Malte
A1 López Heredero, Raquel
A1 Belenguer, Tomás
A1 Belenguer Dávila, Tomás
A1 de la Torre, Antonia
A1 Moravec, Carolina
A1 San Julián, Ricardo
A1 Gonzalo, Alejandro
A1 Cebollero, María
A1 Álvarez-Herrero, Alberto
AB A composite optical bench made up of Carbon Fiber Reinforced Polymer (CFRP) skin and aluminum honeycomb has been developed for the Tunable Magnetograph instrument (TuMag) for the SUNRISE III mission within the NASA Long Duration Balloon Program. This optical bench has been designed to meet lightweight and low sensitivity to thermal gradient requirements, resulting in a low Coefficient of Thermal Expansion (CTE). In addition to the flight model, a breadboard model identical to the flight one has been manufactured, including embedded fiber Bragg temperature and strain sensors. The aim of this is to explore if the use of distributed fiber Bragg gratings (FBGs) can provide valuable information for strain and temperature mapping of an optical instrument on board a space mission during its operation as well as its on-ground testing. Furthermore, surface-mounted strain FBG sensors and thermocouples have been installed in the optical bench for intercomparison purposes. This paper presents the results obtained from a thermal vacuum test consisting of three thermal cycles with stabilization steps at 100 °C, 60 °C, 20 °C and −20 °C. Experimental results provide information about how FBG embedded temperature sensors can provide a proper and quick response to the temperature changes of the optical bench and that embedded FBG strain sensors are able to measure micro-deformation induced in a close-to-zero CTE optical bench.
PB MPDI
SN 1424-8220
YR 2023
FD 2023-07-18
LK https://hdl.handle.net/20.500.14352/92671
UL https://hdl.handle.net/20.500.14352/92671
LA eng
NO Fernández-Medina, A.; Frövel, M.; López Heredero, R.; Belenguer, T.; de la Torre, A.; Moravec, C.; San Julián, R.; Gonzalo, A.; Cebollero, M.; Álvarez-Herrero, A. Embedded Fiber Bragg Grating Sensors for Monitoring Temperature and Thermo-Elastic Deformations in a Carbon Fiber Optical Bench. Sensors 2023, 23, 6499.
NO AEI/MCIN/10.13039/501100011033
DS Docta Complutense
RD 18 abr 2025