SHM Based on Modal Analysis: Accelerometer and Piezoelectric Transducers Instrumentation for Civil Engineering in Heterogeneous Structures

Andrés Belisario-Briceño (1) , Sabeha Fettouma Zedek (1) , Thierry Camps (1) , Raoul François (2) , Christophe Escriba (1) , Jean-Yves Fourniols (1)

1 LAAS-N2IS - Équipe Nano Ingénierie et Intégration des Systèmes
2 INSA Toulouse - Institut National des Sciences Appliquées - Toulouse

This paper presents a strategy for the detection of mechanical damage of a reinforced concrete beam strengthened by Carbon Fiber Reinforced Polymers (CFRP) sheets (TFC ©) based on the joint use of piezoelectric sensors and conventional accelerometers. The beam is subjected to repeat impacts that may represent the action of vehicles on a roadway joint of a bridge, at different levels of damage induce by bending of the reinforced concrete beam. The results show that piezoelectric sensors provide a much wide response those accelerometers allowing a study in the high frequency range (above 2 kHz). The spectral response appears largely affected by mechanical damage on the beam and suggests a possible use for SHM in Civil Engineering structures.

Mots clés: Monitoring; Modal analysis; Civil engineering SHM applications

Domaines: Mécanique [physics]; Mécanique [physics.med-ph]; Statistiques [math.ST]; Théorie [stat.TH]

Andrés Belisario-Briceño, Sabeha Fettouma Zedek, Thierry Camps, Raoul François, Christophe Escriba, et al.. SHM Based on Modal Analysis: Accelerometer and Piezoelectric Transducers Instrumentation for Civil Engineering in Heterogeneous Structures. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01021063⟩