Dr. Hamdi Ezzin received his Ph.D. degree in Physics and Acoustics from the University of Sfax/Faculty of Science of Sfax in 2017. He is now an Assistant Researcher at Nanjing University of Aeronautics and Astronautics College of Aerospace Engineering. His research focused on acoustic wave behavior in complex solid structures such as piezoelectric, piezomagnetic, and magneto-electric materials
Vibration Analysis of Power Law Functionally Graded Magneto-Electro-Elastic Plate Hamdi Ezzin International Journal of Structural Stability and Dynamics, 2025 Functionally-graded materials (FGMs) have great potential in many industry areas for the development of novel acoustic devices such as sensors, electromechanical transducers, actuators and filters. The study of the propagation of elastic waves is a primordial step for a number of such applications. In this study, the stiffness matrix method and the Stroh formalism with the formulation of Ingebrigsten and Tonning were used to establish the relationship between the stress and displacement from the top to the bottom of the fictive multilayer. A power-law inhomogeneity distribution is introduced in the mechanical tensor of the magneto-electro-elastic (MEE) composite. The obtained results indicate that the introduction of heterogeneity has a great influence on nondimensional frequency and modal shape. It is also found that the frequency vibration decreases with the increase in gradient coefficient [Formula: see text]. Furthermore, the metallization of the free surface (vanishing of electrical and magnetic potential) highly decreases the stress, especially in the median of the plate.
Wave propagation in piezoelectric phononic and nesting Fibonacci composite laminates: A parametric study Mohamed Mkaoir, Hamdi Ezzin, Silvia Monchetti, Roberto Brighenti, Anouar Njeh Mathematics and Mechanics of Solids, 2025 In the present study, the plane wave expansion (PWE) and the stiffness matrix method (SMM) are employed to predict the transmission spectrum of piezoelectric phononic and quasi-periodic composite laminates with and without a defect layer. We propose a two-dimensional (2D) geometric system that combines two sub-models: piezoelectric phononic or quasi-periodic strips along the x -direction and periodic laminates in the z -direction. Investigations are conducted to predict the transmission coefficient variation within a high range of frequencies excitation, in quasi-periodic composite laminates and phononic composite laminates with various generation numbers. Numerical simulations show that the introduction of a non-periodic structure (nesting Fibonacci), a defect layer, as well as increasing the generation number increase the number of band gaps. Furthermore, the effect of a defect layer on the transmission spectrum of phononic or quasi-periodic composite laminates is highlighted. Finally, a parametric investigation varying the thickness of the defect layer is carried out.
Multimode Design and Piezoelectric Substrate Anisotropy Use to Improve Performance of Acoustic Liquid Sensors Andrey Smirnov, Vladimir Anisimkin, Natalia Voronova, Elizaveta Shamsutdinova, Peng Li, Hamdi Ezzin, Zhenghua Qian, Tingfeng Ma, Iren Kuznetsova Sensors, 2022 Using acoustic wave modes propagation in piezoelectric plates loaded with conductive liquids, peculiarities of the mode-liquid acoustoelectric interaction are studied. It is found that (i) in contrast to bulk and surface acoustic waves propagating in piezoelectric semiconductors, the acoustoelectric attenuation of the modes is not symmetric in respect to its maximum, (ii) a large increase in attenuation may be accompanied by a small decrease in phase velocity and vice versa, (iii) the peculiarities are valid for “pure” (without beam steering) and “not pure” (with beam steering) modes, as well as for modes of different orders and polarizations, and (iv) conductivity of test liquid increases electromagnetic leakage between input and output transducers, affecting results of the measurements. To decrease the leakage, the liquid should be localized between transducers, outside the zone over them. If so, the mode sensitivity may be as large as 8.6 dB/(S/m) for amplitude and 107°/(S/m) for phase. However, because of comparable cross-sensitivity towards viscosity and dielectric permittivity, modes with selective detection of liquid conductivity are not found.
Lamb Wave Analysis in Anisotropic Multilayer Piezoelectric-piezomagnetic Material Hamdi Ezzin, Mohamed Mkaoir, Zhenghua Qian, Mohammad Arefi, Raj Das Journal of Applied and Computational Mechanics, 2022 The dynamic response of an anisotropic multilayer magneto-electro-elastic (MEE) plate due to an external excitation is investigated in this work, using the stiffness matrix approach. A parametric study is performed by varying the stacking sequence, polarization direction, boundary conditions, and interlayer thickness. The proposed method yields the numerical estimation of the dispersion curve and the free vibration of the Lamb waves for different crystallographic orientations and magneto-electric boundary conditions. It is demonstrated that the anisotropy highly affects the dispersion curve and the non-dimensional frequency, and also decreases the interlayer thickness of the magneto-electro-elastic multilayer and raises the phase velocity of the fundamental symmetric Lamb mode vibration. The key outcomes of this research can serve as a reference in the design and analysis of new smart magneto-electro-elastic structures.
Wave propagation in piezoelectric phononic and nesting Fibonacci composite laminates: A parametric study M Mkaoir, H Ezzin, S Monchetti, R Brighenti, A Njeh Mathematics and Mechanics of Solids, 10812865251403002 , 2025 2025
Vibration analysis of power law functionally graded magneto-electro-elastic plate H Ezzin International Journal of Structural Stability and Dynamics 25 (08), 2550077 , 2025 2025 Citations: 2
Analysis of guided wave propagation in functionally graded magneto-electro elastic composite H Ezzin, M Mkaoir, M Arefi, Z Qian, R Das Waves in Random and Complex Media 34 (4), 2858-2876 , 2024 2024 Citations: 14
Lamb waves analysis in high anisotropy alloys material: Propagation and infinite zero group velocity resonances H Ezzin, S Dahmen, Z Qian, C Glorieux, R Das Wave Motion 121, 103170 , 2023 2023 Citations: 2
Study of the transmission properties of piezoelectric/piezomagnetic phononic composite laminates M Mkaoir, H Ezzin, H Ketata, A Njeh Archive of Applied Mechanics 93 (6), 2273-2285 , 2023 2023 Citations: 3
Energy reflection and transmission characteristics of acoustic waves in a functionally graded piezoelectric plate immersed into non-viscous fluid H Ezzin, R Das, Z Qian, I Kuznetsova Journal of Sound and Vibration 535, 117139 , 2022 2022 Citations: 3
Multimode design and piezoelectric substrate anisotropy use to improve performance of acoustic liquid sensors A Smirnov, V Anisimkin, N Voronova, E Shamsutdinova, P Li, H Ezzin, ... Sensors 22 (19), 7231 , 2022 2022 Citations: 19
Lamb wave analysis in anisotropic multilayer piezoelectric-piezomagnetic material RD H. Ezzin, M. Mkaoir, Z.H. Qian, M. Arefi Journal of Applied and Computational Mechanics 8 (Issue 2), Pages 629-6 , 2022 2022 Citations: 7
Multiple crossing points of Lamb wave propagating in a magneto-electro-elastic composite plate H Ezzin, B Wang, Z Qian, M Arefi Archive of Applied Mechanics 91 (6), 2781-2793 , 2021 2021 Citations: 12
Propagation behavior of ultrasonic Love waves in functionally graded piezoelectric-piezomagnetic materials with exponential variation H Ezzin, B Wang, Z Qian Mechanics of Materials 148, 103492 , 2020 2020 Citations: 57
Rayleigh wave behavior in functionally graded magneto-electro-elastic material H Ezzin, M Mkaoir, MB Amor Superlattices and Microstructures 112, 455-469 , 2017 2017 Citations: 31
Propagation behavior of SH waves in layered piezoelectric/piezomagnetic plates H Ezzin, MB Amor, MHB Ghozlen Acta Mechanica 228 (3), 1071-1081 , 2017 2017 Citations: 88
Love waves propagation in a transversely isotropic piezoelectric layer on a piezomagnetic half-space H Ezzin, MB Amor, MHB Ghozlen Ultrasonics 69, 83-89 , 2016 2016 Citations: 88
MOST CITED SCHOLAR PUBLICATIONS
Propagation behavior of SH waves in layered piezoelectric/piezomagnetic plates H Ezzin, MB Amor, MHB Ghozlen Acta Mechanica 228 (3), 1071-1081 , 2017 2017 Citations: 88
Love waves propagation in a transversely isotropic piezoelectric layer on a piezomagnetic half-space H Ezzin, MB Amor, MHB Ghozlen Ultrasonics 69, 83-89 , 2016 2016 Citations: 88
Propagation behavior of ultrasonic Love waves in functionally graded piezoelectric-piezomagnetic materials with exponential variation H Ezzin, B Wang, Z Qian Mechanics of Materials 148, 103492 , 2020 2020 Citations: 57
Rayleigh wave behavior in functionally graded magneto-electro-elastic material H Ezzin, M Mkaoir, MB Amor Superlattices and Microstructures 112, 455-469 , 2017 2017 Citations: 31
Multimode design and piezoelectric substrate anisotropy use to improve performance of acoustic liquid sensors A Smirnov, V Anisimkin, N Voronova, E Shamsutdinova, P Li, H Ezzin, ... Sensors 22 (19), 7231 , 2022 2022 Citations: 19
Analysis of guided wave propagation in functionally graded magneto-electro elastic composite H Ezzin, M Mkaoir, M Arefi, Z Qian, R Das Waves in Random and Complex Media 34 (4), 2858-2876 , 2024 2024 Citations: 14
Multiple crossing points of Lamb wave propagating in a magneto-electro-elastic composite plate H Ezzin, B Wang, Z Qian, M Arefi Archive of Applied Mechanics 91 (6), 2781-2793 , 2021 2021 Citations: 12
Lamb wave analysis in anisotropic multilayer piezoelectric-piezomagnetic material RD H. Ezzin, M. Mkaoir, Z.H. Qian, M. Arefi Journal of Applied and Computational Mechanics 8 (Issue 2), Pages 629-6 , 2022 2022 Citations: 7
Study of the transmission properties of piezoelectric/piezomagnetic phononic composite laminates M Mkaoir, H Ezzin, H Ketata, A Njeh Archive of Applied Mechanics 93 (6), 2273-2285 , 2023 2023 Citations: 3
Energy reflection and transmission characteristics of acoustic waves in a functionally graded piezoelectric plate immersed into non-viscous fluid H Ezzin, R Das, Z Qian, I Kuznetsova Journal of Sound and Vibration 535, 117139 , 2022 2022 Citations: 3
Vibration analysis of power law functionally graded magneto-electro-elastic plate H Ezzin International Journal of Structural Stability and Dynamics 25 (08), 2550077 , 2025 2025 Citations: 2
Lamb waves analysis in high anisotropy alloys material: Propagation and infinite zero group velocity resonances H Ezzin, S Dahmen, Z Qian, C Glorieux, R Das Wave Motion 121, 103170 , 2023 2023 Citations: 2
Wave propagation in piezoelectric phononic and nesting Fibonacci composite laminates: A parametric study M Mkaoir, H Ezzin, S Monchetti, R Brighenti, A Njeh Mathematics and Mechanics of Solids, 10812865251403002 , 2025 2025
