P5.1 - Polymer planar Bragg grating sensor for 2D strain sensing
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P5 - Optical Sensors
- M. Rosenberger, W. Eisenbeil, S. Hessler, S. Belle, R. Hellmann - University of Applied Sciences Aschaffenburg (Germany), B. Schmauss - University of Erlangen-Nuernberg, Erlangen (Germany)
- 795 - 798
We report on the application of a 2-dimensional polymer planar Bragg grating sensor (2D PPBG) for measuring multi axial tensile and compressive strain. The 2D PPBG consists of Polymethylmethacrylate including two integrated planar Bragg gratings twisted against each other by an angle of 40°. These Bragg gratings are sequentially written into the polymer substrate by applying a rapid fabrication technique. After connecting a single mode fiber to each integrated Bragg grating, the sensing device is bonded to stainless steel and applied for tensile and compressive strain measurements. The 2D PPBG reveals a distinctive angle dependent behavior of the reflected Bragg wavelength, which in turn makes this device suitable for measuring multi axial tensile and compressive strain.