We describe the application of a distributed optical fiber sensor based on stimulated Brillouin scattering, as an integrated system for safety monitoring of railway infrastructures. The strain distribution was measured statically and dynamically along 60 meters of rail track, as well as along a 3-m stone arch bridge. We show that, gluing an optical fiber along the rail track, traffic monitoring can be performed in order to identify the train passage over the instrumented sector and determine its running conditions. Furthermore, dynamic and static strain measurements on a rail bridge are reported, aimed to detect potential structural defects. The results indicate that distributed sensing technology represents a valuable tool in railway traffic and safety monitoring.
Key Words
optical fiber measurements; brillouin scattering; structural health monitoring
Address
Aldo Minardo, Agnese Coscetta and Luigi Zeni:Department of Industrial and Information Engineering, Second University of Naples, Via Roma 29 Aversa, Italy
Giuseppe Porcaro: Tecnomatica SaS, Corso del Mezzogiorno III trav. 71122 Foggia, Italy
Daniele Giannetta: Ferrovie del Gargano, Direzione di Esercizio – 71016 San Severo - Foggia, Italy
Romeo Bernini: Istituto per il Rilevamento Elettromagnetico dell\'Ambiente – Consiglio Nazionale delle Ricerche,
Via Diocleziano, 328 – 80124 Napoli, Italy
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