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Fiber Bragg grating sensors for steel wire monitoring in real-time

: Koch, J.; Angelmahr, M.; Schade, W.


López-Higuera, J.M. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
23rd International Conference on Optical Fibre Sensors 2014. Vol.3 : 2 - 6 June 2014, Santander, Spain
Bellingham, WA: SPIE, 2014 (Proceedings of SPIE 9157)
ISBN: 978-1-62841-175-1
Paper 9157A2, 4 S.
International Conference on Optical Fibre Sensors (OFS) <23, 2014, Santander>
Fraunhofer HHI ()

Steel wires are widely applied in industrial applications - in most cases as critical components fulfilling high safety requirements in harsh environments (e.g. dockside cranes). In this paper a technique for real-time monitoring of steel ropes applying optical strain sensors based on fiber Bragg gratings is presented. The optical sensors are integrated within the wire strand and replace the core. The strain transmission from the outer wires to the sensors is assured by the mechanical coupling between the optical fiber and the strand. The actual strain load and rope vibrations in the kilohertz range can be determined in real-time.