Long-period gratings for selective monitoring of loads on a wind turbine blade
- Publication Type:
- Journal Article
- Applied Optics, 2014, (18), pp. 3993 - 4001
- Issue Date:
© 2014 Optical Society of America. An optical fiber sensor based on long-period gratings (LPG) for selective measurements of flap- and edgewise bending of a wind turbine blade is presented. Two consecutive LPGs separatedby 40 mminterfere to improve resolution and reduce noise in a D-shaped fiber. The mode profile of the device was characterized experimentally to provide a model describing the mode couplings. The sensor was tested on a wind.
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