Nonlinear Analysis of Damaged Metal-Based Composite Plates Using Guided Waves

Autor:	Antonin Novak, M. Bentahar, R. El Guerjouma, Yousra Baccouche, Charfeddine Mechri
Přispěvatelé:	Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM)
Rok vydání:	2017
Předmět:	Metal [SPI]Engineering Sciences [physics] Nonlinear system Materials science Acoustics and Ultrasonics visual_art 0103 physical sciences Composite number visual_art.visual_art_medium Composite material 010301 acoustics 01 natural sciences Music
Zdroj:	Acta Acustica united with Acustica Acta Acustica united with Acustica, Hirzel Verlag, 2017, 103 (6), pp.967-977. ⟨10.3813/AAA.919126⟩
ISSN:	1610-1928 1861-9959
Popis:	International audience; Resonance experiments have already proved the high level of nonlinearity in complex materials, including microcracked composites. However, the nonlinear parameters related to elastic modulus and damping are defined around a given resonance mode and are therefore known over a very limited frequency domain. In this contribution, the nonlinear parameters are determined on intact and damaged metal-based composite plates for several flexural resonances. Furthermore, the use of the theoretical formalism corresponding to guided flexural waves allowed to define a nonlinear parameter over a larger frequency domain. Finally, the nonlinear convolution method allowed to take advantage of the harmonics related to the different resonance modes in order to define new nonlinear parameters whose sensitivity is much greater than the ones determined at the fundamental frequencies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e79d478a5b1eca224f8b7fc999d53b4 https://doi.org/10.3813/aaa.919126 Zobrazit plný text záznamu