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Ground vibration testing of a helicopter rotor blade using optical fibre sensors
Author(s): Thomas Kissinger; Simone Weber; Edmond Chehura; James Barrington; Stephen Staines; Stephen W. James; Mudassir Lone; Ralph P. Tatam
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Paper 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.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119902 (28 August 2019); doi: 10.1117/12.2538810
Show Author Affiliations
Thomas Kissinger, Cranfield Univ. (United Kingdom)
Simone Weber, Cranfield Univ. (United Kingdom)
Airbus Helicopters UK (United Kingdom)
Edmond Chehura, Cranfield Univ. (United Kingdom)
James Barrington, Cranfield Univ. (United Kingdom)
Stephen Staines, Cranfield Univ. (United Kingdom)
Stephen W. James, Cranfield Univ. (United Kingdom)
Mudassir Lone, Cranfield Univ. (United Kingdom)
Ralph P. Tatam, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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