Ground vibration testing of a helicopter rotor blade using optical fibre sensors

Thomas Kissinger; Simone Weber; Edmond Chehura; James Barrington; Stephen Staines; Stephen W. James; Mudassir Lone; Ralph P. Tatam

doi:10.1117/12.2538810

28 August 2019 Ground vibration testing of a helicopter rotor blade using optical fibre sensors

Thomas Kissinger, Simone Weber, Edmond Chehura, James Barrington, Stephen Staines, Stephen W. James, Mudassir Lone, Ralph P. Tatam

Author Affiliations +

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 1119902 (2019) https://doi.org/10.1117/12.2538810
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

The use of optical fibre Bragg gratings (FBGs) and direct fibre optic shape sensing (DFOSS) in the ground vibration testing of a full size helicopter rotor blade has been evaluated, with the performance benchmarked against measurements made using accelerometers. An array of FBGs was used to monitor the amplitudes of the mode frequencies at specific locations along the blade and DFOSS was used to measure directly the shape of the blade and to characterise its modal frequencies. While it was possible to measure modal frequencies using both approaches, DFOSS proved capable of detecting modal frequencies using a single sensor array located along the longitudinal axis of the blade.

Citation Download Citation

Thomas Kissinger, Simone Weber, Edmond Chehura, James Barrington, Stephen Staines, Stephen W. James, Mudassir Lone, and Ralph P. Tatam "Ground vibration testing of a helicopter rotor blade using optical fibre sensors", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119902 (28 August 2019); https://doi.org/10.1117/12.2538810

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KEYWORDS

Sensors

Fiber Bragg gratings

Optical fibers

Adhesives

Reflectors

Structured optical fibers

3D modeling

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