Semi-analytical hybrid approach for modelling smart structures and guided wave-based SHM systems for a laminate with multiple delaminations and surface-mounted inhomogeneities

Golub, Mikhail V.; Fomenko, Sergey I.; Shpak, Alisa N.; Gu, Yan; Wang, Yanzheng; Zhang, Chuanzeng

doi:10.1016/j.apm.2023.04.017

Cited by 7 publications

(4 citation statements)

References 57 publications

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“…Let us consider wave excitation in the wedge by the rectangular piezoelectric actuator with an intermediate laminated rectangular EMM block as schematically shown by a dashed circle in Figure 1 . In the present study, we employ the boundary integral equation method [ 29 , 32 , 33 ], the semi-analytical hybrid approach [ 34 , 35 ] and the finite element method to solve the boundary-value problem described in the following subsection.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…Wave motion of a piezoelectric transducer with given voltage on surface electrodes is simulated using the spectral finite element method. Wave-field in the layered waveguide with regular boundaries is obtained in the integral form using the Fourier transform of the Green’s matrix of the layered structure and a load generated by the transducer [ 34 , 35 ]. The employed numerical algorithm for the evaluation of the Green’s matrix of layered elastic structures including periodic ones can be found in [ 33 , 46 ].…”

Section: Transducer With Emm Intermediate Without Voidsmentioning

confidence: 99%

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Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Golub,

Fomenko,

Usov

et al. 2023

Sensors

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Optimization of the structure of piezoelectric transducers such as the proper design of matching layers can increase maximum wave energy transmission to the host structure and transducer sensitivity. A novel configuration of an ultrasonic transducer, where elastic metamaterial insertion is introduced to provide bulk wave mode conversion and to increase wave energy transfer into a substrate, is proposed. Configurations of layered elastic metamaterials with crack-like voids are examined theoretically since they can provide wide band gaps and strong wave localization and trapping. The analysis shows that the proposed metamaterial-based matching layers can sufficiently change wave energy transmission from a piezoelectric active element for various frequency ranges (relatively low frequencies as well as higher ones). The proposed configuration can also be useful for advanced sensing with higher sensitivity in certain frequency ranges or for demultiplexing different kinds of elastic waves.

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Section: Formulation Of the Problemmentioning

confidence: 99%

Section: Transducer With Emm Intermediate Without Voidsmentioning

confidence: 99%

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Golub,

Fomenko,

Usov

et al. 2023

Sensors

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“…Current nondestructive testing technologies for grouting sleeves include impact echo, ray detection, embedded chip, and infrared thermal imaging methods, each with its limitations [6][7][8][9]. Although the impact echo method [10,11] has low cost and simple operation, its accuracy is insufficient.…”

Section: Introductionmentioning

confidence: 99%

Time Reversal Method for Lamb−Wave−Based Diagnostics of Multiple−Sleeve Grouting Connections

Lin,

Wang,

Chen

et al. 2023

Buildings

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The grouting quality of the grouting sleeve connector is crucial for ensuring the stability of prefabricated building components. In practical engineering, the grouting sleeve is often arranged with multiple sleeves, and there is no feasible nondestructive testing method for testing the complex arrangement of the sleeve grouting joints in the embedded state. Building upon the feasibility of nondestructive detection of single socket grouting connectors, this study discusses the feasibility of defect detection and the severity of defects. Simulation results are used to investigate the choice of the best excitation signal. For different simulated damage cases, it is proven that the selected damage index can be very sensitive, and both the location and the extent of the damage can be detected successfully. The results demonstrate that with the section injury rate ranging from 10% to 40%, the reverse focus peak decreased from 20% to 60% compared to no injury. The effectiveness of the Lamb−wave−based time reversal method in detecting the internal grouting defects of multiple grouting sleeve joints is proven. This paper focuses on the detection study of the Lamb−wave−based time reversal method and proves its ability to perform the detection task effectively and accurately.

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“…Complex engineering problems currently can be solved using robust numerical methods such as the finite element method, as well as the spectral element method, the boundary element method, the finite volume method, and meshless methods. Various coupling procedures (hybrid and coupled numerical methods) have been proposed incorporating different numerical methods in order to take advantage of their respective benefits [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Elastic Wave Propagation in Porous Soils with Vertically Inhomogeneous Fluid Contents Due to Infiltration

Fomenko,

Jana,

Golub

2023

Mathematics

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The structure of soils is often heterogeneous with layered strata having distinct permeabilities. An advanced mathematical and numerical coupled model of elastic wave propagation in poroelastic multi-layered soils subjected to subsoil water infiltration is proposed in this study. The coupled model was based on the introduction of an inhomogeneous functionally graded fluid-saturation of the considered soil depending on the infiltration time, which was evaluated employing Richards’ equation. The time-harmonic solution was formulated in terms of the Fourier transform of Green’s matrix and the surface load that excites the vibration. The convergence and efficiency of the proposed approach are demonstrated. An example of dispersion curves for partially saturated porous strata made of loam, sand, and rock at different infiltration times is provided, and it is shown that the characteristics of the surface acoustic waves change with time, which can be further used for inverse problems’ solution.

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Semi-analytical hybrid approach for modelling smart structures and guided wave-based SHM systems for a laminate with multiple delaminations and surface-mounted inhomogeneities

Cited by 7 publications

References 57 publications

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Time Reversal Method for Lamb−Wave−Based Diagnostics of Multiple−Sleeve Grouting Connections

Numerical Modeling of Elastic Wave Propagation in Porous Soils with Vertically Inhomogeneous Fluid Contents Due to Infiltration

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