A Finite Element Simulation Method Of Piezoelectric Wafer Active Sensors With Mechanical Elements

Yu, Sunquan; Fan, Chengguang; Gao, Bin; Zhao, Yong; Yang, Lei

doi:10.1109/spawda51471.2021.9445486

Cited by 4 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a benchmark numerical simulation method, finite element analysis (FEA) has been proved effective in analyzing piezoelectric components and guided wave propagation. [15][16][17] In order to evaluate the performance of the proposed method, a plate with a single-integral stiffener is modeled using both the FEA and the 2D-FDTD methods. The size and material are consistent with those of the experimental model illustrated in the previous section.…”

Section: A Comparison With Fe Methodsmentioning

confidence: 99%

“…In recent decades, many numerical methods have been proposed to understand the propagation characteristics of Lamb waves in complex structures, as well as their interaction with damage. The most popular multiphysics simulation method for Lamb wave propagation with piezoelectric transducers is the finite element method (FEM), [15][16][17] which is supported by many commercial software, such as the ABAQUS, 17,18 ANSYS, 19 and COMSOL. 20 However, the linear FE need excessive spatial discretization to accurately solve the high-frequency wave propagation problem because their linear interpolation functions cannot precisely represent deformed shapes due to wave propagation within an element.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A rapid 2D-FDTD method for damage detection in stiffened plate using time-reversed Lamb wave

Fan

Zhao

2023

Structural Health Monitoring

Self Cite

View full text Add to dashboard Cite

This study proposes an improved two-dimensional finite-difference time-domain method (2D-FDTD) to simulate the propagation of guided waves in three-dimensional (3D) stiffened plates, which can greatly reduce the calculation amount and accelerate the simulation process. This method can be used for damage-detection imaging based on time-reversal with wavefield reconstruction (TR-RW) as a quick numerical simulation of wavefield is available. First, the piezoelectric wafer active sensors excite and collect Lamb wave signals in the damaged stiffening plate, after which these signals are reversed in the time domain. Second, the TR signals are again triggered by each sensor in turn on the reconstructed numerical model of the tested structure with 2D-FDTD. Third, the wavefield animation is obtained through simulation. Finally, the energy of the wavefield can be focused in certain areas, indicating the location of the damage. As an example, TR-RW, combined with 2D-FDTD method, is adopted to detect damage in an integral grid-stiffened plate, showing that the proposed 2D method can decrease the calculation time from dozens of minutes in the 3D model to dozens of seconds, which is of great significance for damage-detection applications. Furthermore, compared with the virtual TR method, the combined TR-RW and 2D-FDTD method can overcome the multipath effect and improve the damage location accuracy of stiffened structures.

show abstract

Section: A Comparison With Fe Methodsmentioning

confidence: 99%