Experimental validation of transient spectral finite element simulation tools dedicated to guided wave based structural health monitoring

Olivier Mesnil (1) , Arnaud Recoquillay (1) , Tom Druet (1) , Valentin Serey (1) , Huu Tinh Hoang (1) , Alexandre Imperiale (1) , Edouard Demaldent (1)

1 LSMA (CEA, LIST) - Laboratoire Simulation et Modélisation Acoustique (CEA, LIST)

In guided wave structural health monitoring (GW-SHM), a strong need for reliable and fast simulation tools has been expressed throughout the literature to optimize SHM systems or demonstrate performance. Even though guided wave simulations can be conducted with most finite elements software packages, computational and hardware costs are always prohibitive for large simulation campaigns. A novel SHM module has been recently added to the civa software and relies on unassembled high-order finite elements to overcome these limitations. This article focuses on the thorough validation of civa for SHM to identify the limits of the models. After introducing the key elements of the civa SHM solution, a first validation is presented on a stainless steel pipe representative of the oil and gas industry. Second, validation is conducted on a composite panel with and without stiffener representative of some structures in the aerospace industry. Results show a good match between the experimental and simulated datasets, but only if the input parameters are fully determined before the simulations.

Mots clés: elastic wave; numerical analysis; wave propagation modeling; validation; structural health monitoring

Domaines: Vibrations [physics.class-ph]; Modélisation et simulation

Olivier Mesnil, Arnaud Recoquillay, Tom Druet, Valentin Serey, Huu Tinh Hoang, et al.. Experimental validation of transient spectral finite element simulation tools dedicated to guided wave based structural health monitoring. Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, In press, ⟨10.1115/1.4050708⟩. ⟨hal-03187419⟩