Experimental Lamb mode identification in a plate containing a hole using dual signal processing - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Measurement Science and Technology Année : 2008

Experimental Lamb mode identification in a plate containing a hole using dual signal processing

Résumé

The identification of Lamb mode amplitude variation as a function of the damage evolution is still the most difficult step in the process of damage monitoring using embedded Lamb wave-based systems. The aim of this paper is to propose a simple system based on the generation of two different frequencies in order to better identify Lamb mode amplitude and to avoid false data interpretation in plates containing a hole of variable diameter. This identification is based on a simple relation between the short-time Fourier transform and the two-dimensional Fourier transform. Experimentally, a 3 mm thick aluminium plate is used and the two frequencies have been chosen equal to 400 kHz and 600 kHz in order to generate the two first fundamental Lamb waves.

Dates et versions

hal-00360096 , version 1 (10-02-2009)

Identifiants

Citer

Sébastien Grondel, Jamal Assaad, Faysal El Youbi, Emmanuel Moulin, Najib Abou Leyla. Experimental Lamb mode identification in a plate containing a hole using dual signal processing. Measurement Science and Technology, 2008, 19, pp.125703-1-6. ⟨10.1088/0957-0233/19/12/125703⟩. ⟨hal-00360096⟩
19 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More