Improving efficiency and robustness of structural health monitoring techniques based on Lamb wave detection

Jocelyn Rebufa (1) , Gladys Jaussaud (1) , Marc Fournier (1) , M. Logeais (1) , N. Bencheikh (1) , F. Claeyssen (1) , Marc Rébillat (2) , Mikhail Guskov (2)

1 Cedrat Technologies
2 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

Required improvements of piezoelectric elements actuation and measurement system efficiency and robustness are introduced as a critical feature for structural health monitoring (SHM) applications. An electronic module (Lamb wave detection system: LWDS) allowing to use each piezoelectric element in an array either in emission or reception mode is presented. The high commutation rate between these two states, for each transducer separately, is a key enhancement for SHM methods. The robustness of the sensor integration is also studied considering the patches size and bonding method. Coupled dispersion curve are introduced Comparison of FEM simulation and experiments of the piezo-electric coupling are presented. This work takes part of the H2020 REMAP project about adaptive aircraft maintenance planning.

Mots clés: Structural health monitoring; Lamb waves; Pulse-echo; Piezo-electric arrays; High Frequency Power Amplifier

Domaines: Acoustique [physics.class-ph]

Jocelyn Rebufa, Gladys Jaussaud, Marc Fournier, M. Logeais, N. Bencheikh, et al.. Improving efficiency and robustness of structural health monitoring techniques based on Lamb wave detection. IX ECCOMAS Thematic Conference on Smart Structures and Materials, Jul 2019, Paris, France. pp.1-12. ⟨hal-03011989⟩