Damage location method for thin composites structures - application to an aircraft door

Valérie Pommier-Budinger (1) , Olivier Cherrier (2) , Joseph Morlier (2) , Frederic Lachaud (2)

1 DMIA - Département de Mathématiques, Informatique, Automatique
2 ICA - Institut Clément Ader

Piezoelectric sensors are widely used for Structure Health Monitoring (SHM) technique due to their high-frequency capability. In particular, electromechanical impedance (EMI) techniques give simple and low cost solutions for detecting damage in composite structures. For example, damage indicators computed from EMI deviations between the pristine structure and the damaged structure can be compared to a threshold in order to point damage. When it is question of damage localization, the simple analysis of the electromechanical impedance fails to furnish enough information. We propose a method based both on EMI damage indicators and on the acoustic attenuation level to locate damage. One of the main advantages of our method, so called data driven method, is that only experimental data are used as inputs for our algorithms. It does not rely on any model.

Mots clés: Damage localization; EMI; Aircraft door; Composites

Domaines: Mécanique des structures [physics.class-ph]

Valérie Pommier-Budinger, Olivier Cherrier, Joseph Morlier, Frederic Lachaud. Damage location method for thin composites structures - application to an aircraft door. AST 2013 4th International Workshop on Aircraft System Technologies, Apr 2013, Hamburg, Germany. pp.0. ⟨hal-01851658⟩