Vibration and optimization based damage identification of plates with a variably oriented surface crack
Hajar Chouiyakh  1, @  , Lahcen Azrar * , Khaled Alnefaie, M.z Essadek, Omar Akourri, @
1 : Equipe de Modélisation Mathématique et Contrôle  (MMC)
Equipe de Modélisation Mathématique et Contrôle, Département de Mathématiques, Faculté des Sciences et Techniques de Tanger, Université Abdelmalek Essaadi, BP416 Tanger-Maroc, -  Maroc
* : Auteur correspondant

The main aims of this work are on one hand to investigate free and forced vibrations of plates containing a surface inclined crack, and on the other hand to develop crack identification strategies by using optimization techniques.The 2D differential quadrature method is elaborated for free vibration problems, and the genetic algorithm is adopted for damage identification. Eigenfrequencies and eigenmodes are obtained by few discretization points, and used for cracks parameters identification. The impact of crack orientation, length and depth is investigated for plates with different boundary conditions. Identification of damage severity is also discussed; and an efficient crack characterization is elaborated.

Type : : oral
Langue du texte intégral : anglais
Thématiques : T01: Dynamique et vibrations
Mots-Clés : Plate ; oriented crack ; DQM ; optimization ; identification
Personnes connectées : 2