Bragg Gratings in Micro-Structured Optical Fiber as Strain Sensors for Structural Health Monitoring of Fiber-Reinforced Plastics
Optical fibers typically only allow strain measurements in the direction along the fiber’s axis. We developed an optical fiber sensor that allows measuring transverse strains in fiber-reinforced plastics, when embedded between the reinforcement fibers. Assessing the strain levels in the composite’s out-of-plane direction thereby becomes possible with a resolution close to 1 µstrain. Our results have applications in the domain of load monitoring, but also in the fields of production monitoring and structural health monitoring.
Authors: T. Geernaert, S. Goossens, B. De Pauw, G. Chiesura, G. Luyckx, J. Degrieck, M. Kaufmann, H. Thienpont, and F. Berghmans
Conference: SAMPE Europe Conference 2016