Fatigue performance of distributed optical fiber sensors in reinforced concrete elements António Barrias a *, Joan R. Casas a and Sergi Villalba b a Department of Civil and Environmental Engineering, Technical University of Catalonia, UPC-BarcelonaTech, c/ Jordi Girona 1-3, 08034 Barcelona, Spain; b Department of Project and Construction Engineering, Technical University of Catalonia, UPC-BarcelonaTech, c/ Colom 11, 08222 Terrassa, Spain Corresponding author: Tel.: +34934016200 email: antonio.jose.de.sousa@upc.edu