Strain Measurement in Coilable Thin Composite Shells with Embedded Fiber Bragg Grating Sensors
Progress towards the use of ultra-thin fiber Bragg grating sensors for the in-situ strain measurement of coilable thin composite shells is presented. The first part of this work presents the manufacturing procedure used in the construction of these composite shells with embedded sensors. The second part of this work investigates how embedded ultra-thin fiber Bragg grating sensors affect the bending stiffness and failure curvature of these laminates through the use of the column bending test. The influence of the embedded sensors on the failure of these laminates is further investigated through μCT imaging after failure.
© 2023 by Brayden Aller, Sergio Pellegrino, Nathan Kinkaid, Juan Mejia-Ariza, Richard Otis, Patrick Hon Man Chan and Francisco Pena. The research was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). Support from the Caltech Space Solar Power Project is acknowledged. The authors would also like to acknowledge the contribution of Uba K. Ubamanyu for his input on the experimental setup used in this work.
Accepted Version - 2023_Strain_measurement_SciTech.pdf