RT info:eu-repo/semantics/conferenceObject
T1 High visibility phase-sensitive optical time domain reflectometer for distributed sensing of ultrasonic waves
A1 Fidalgo Martins, Hugo
A1 Martín López, Sonia
A1 Corredera, Pedro
A1 Filograno, M. L.
A1 Frazão, O.
A1 González Herráez, Miguel
K1 Phase-sensitive OTDR
K1 Distributed sensor
K1 Optical fiber sensors
K1 Vibration measurements
K1 Ciencias tecnológicas
K1 Electrónica
K1 Technology
K1 Electronics
AB In structural health monitoring, the propagation of ultrasonic waves along a structure can reveal interesting data relevant to the integrity of the whole structure. The availability of a system for distributed sensing of ultrasonic waves could, in some cases (e.g. pipelines) provide extremely valuable information to civil engineers. Phase-sensitive optical time domain reflectometry (ΦOTDR) is a simple and effective tool allowing the distributed monitoring of vibrations along single-mode fibers. Up to now, ΦOTDRs have been used mostly for the measurement of sub-kHz vibrations. In this work, the authors present an experimental characterization of a high-visibility ΦOTDR and its performance when used for ultrasonic vibration measurements. The sensor was able to measure vibrations of up to 39.5 kHz with a resolution of 5 m over a range which could go up to 1.25 km. This is the first time to our knowledge that a ΦOTDR is demonstrated for distributed measurement of ultrasonic waves.
PB Society of Photo-optical Instrumentation Engineers (SPIE)
SN 9780819496348
SN 0277-786X
YR 2013
FD 2013-05-19
LK http://hdl.handle.net/10017/26499
UL http://hdl.handle.net/10017/26499
LA eng
NO 5th European Workshop on Optical Fibre Sensors, Krakow, Poland, (5th EWOFS'2013) 19-22 May, 2013.
NO Ministerio de Economía y Competitividad
DS MINDS@UW
RD 20-abr-2024