The ability of Brillouin-based fiber-optic sensing to detect damage in a moving cantilever beam is demonstrated. A fully computerized, distributed and high spatial resolution (10cm) Fast-BOTDA interrogator (50 full-beam Brillouin-gain-spectra per second) successfully directly detected an abnormally stiffened (i.e., 'damaged') 20cm long segment in a 6m Aluminum beam, while the beam was in motion. Damage detection was based on monitoring deviations of the measured strain distribution along the beam from that expected in the undamaged case.
|Title of host publication||Sixth European Workshop on Optical Fibre Sensors|
|State||Published - 2016|
|Event||6th European Workshop on Optical Fibre Sensors - Limerick, Ireland|
Duration: 31 May 2016 → 3 Jun 2016
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||6th European Workshop on Optical Fibre Sensors|
|Period||31/05/16 → 3/06/16|
Bibliographical notePublisher Copyright:
© 2016 SPIE.
- Brillouin scattering
- Damage detection
- Fiber optics sensors
- Nonlinear optics
- Structural health monitoring