On-field validation of real-time phase-OTDR for roller bearing monitoring

Carolina Franciscangelis; Magnus Lindblom; Walter Margulis; Kenny H. Tow; Ola Sjölander; Lars Kahlman; Olle Bankeström

doi:10.1117/12.2541266

28 August 2019 On-field validation of real-time phase-OTDR for roller bearing monitoring

Carolina Franciscangelis, Magnus Lindblom, Walter Margulis, Kenny H. Tow, Ola Sjölander, Lars Kahlman, Olle Bankeström

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111992G (2019) https://doi.org/10.1117/12.2541266
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

This work presents an on-field validation of an in-house built real-time phase-OTDR for monitoring the status of roller bearings. The acoustic sensor prototype was designed and assembled at RISE and evaluated on a 1 m diameter bearing at SKF AB facilities in Göteborg, Sweden. A 0.24 numerical aperture single-mode optical fiber was installed in the bearing lubrication groove, which is 50 mm large and 5 mm deep. Tests were performed to verify the response of the phaseOTDR to acoustic emissions in the bearing such as hammer hits and running the rollers at different loads. The fiber optic sensor results agree with the measurements performed by a standard industrial high sensitivity electronic accelerometer used for comparison. Moreover, as opposed to the reference electronic sensor, the phase-OTDR proved to be insensitive to electrical disturbances present on the environment.

Citation Download Citation

Carolina Franciscangelis, Magnus Lindblom, Walter Margulis, Kenny H. Tow, Ola Sjölander, Lars Kahlman, and Olle Bankeström "On-field validation of real-time phase-OTDR for roller bearing monitoring", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992G (28 August 2019); https://doi.org/10.1117/12.2541266

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KEYWORDS

Sensors

Acoustics

Fiber optics sensors

Optical fibers

Prototyping

Acoustic emission

Electronic circuits

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