Strain and Temperature Monitoring of Asymmetric Composite Laminate using FBG Hybrid Sensors
Auteur(s): |
Zhan-Sheng Guo
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Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Structural Health Monitoring, septembre 2007, n. 3, v. 6 |
Page(s): | 191-197 |
DOI: | 10.1177/14759217070060030201 |
Abstrait: |
Fiber Bragg grating (FBG) hybrid sensors and thermocouples measure strain and temperature simultaneously during and after cure of asymmetric cross-ply composite laminates. FBG strain sensor is used to measure strain; FBG temperature sensor and thermocouple are used to measure temperature. The characteristic matrix of the sensor is derived analytically and measurements can be done without sensor calibration experiments. A wavelength-swept fiber laser is used as the light source. Two FBG hybrid sensors and two K-type thermocouples are embedded in a carbon/epoxy asymmetric cross-ply composite laminate in different directions and different locations. The real-time measurement of fabrication strains and temperatures is performed at two points within the asymmetric composite laminate during the cure process in a hot press. Through these experiments, FBG hybrid sensors are proven to be an efficient choice for smart monitoring of composite structures. |
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10561566 - Publié(e) le:
11.02.2021 - Modifié(e) le:
19.02.2021