Time-delayed layer-based piezoelectric transducer for unidirectional excitation and reception of SH guided wave

Du, Yuehao; Cai, Jiangcheng; Kan, Qianhua; Zhang, Qinghua; Wang, Ping; Miao, Hongchen; Kang, Guozheng

doi:10.1016/j.ymssp.2023.110268

Cited by 3 publications

(5 citation statements)

References 27 publications

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“…Note that these PZT wafers are activated simultaneously via one source device. The substructure shown in figure 1(b) can be regarded as a unidirectional transducer element, as indicated in the previous work [23]. When an alternating voltage is applied on the two PZT wafers of the substructure, two quasi-SH 0 modes with π phase difference will be excited in two rectangular strips, as depicted in figure 1(c).…”

Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 96%

“…In addition to SH 0 mode excitation, the proposed MSBPT can also be used as a sensor to detect SH 0 mode. According to the previous work [23], each transducer element can only receive the SH 0 mode traveling from the enhanced side and filter out the SH 0 mode traveling from the weakened side. Therefore, only the SH 0 mode propagation from the enhanced side can be detected by the proposed MSBPT.…”

Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 99%

“…The term E n (r n , θ n ) is the SH 0 wavefield generated by the nth unidirectional transducer element, which is equivalent to the wavefield caused by two antiparallel line traction sources [23]. Based on the Huygens principle, E n (r n , θ n ) can be given by…”

Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 99%

“…Currently, various directional transducers have been proposed to generate SH 0 mode and focus its wave energy along in four orthogonal directions [12,13], two opposite directions [14][15][16][17][18][19], or even one direction [20][21][22][23]. However, few directional SH 0 wave transducers can further deflect the wave beam.…”

Section: Introductionmentioning

confidence: 99%

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Metasubstrate-based SH guided wave piezoelectric transducer for unidirectional beam deflection without time delay

Miao,

2024

Smart Mater. Struct.

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Focusing the energy of a guided wave along a desired direction is of great significance in structural health monitoring (SHM), since it can improve the sensitivity to defects and reduce the complexity of signal interpretations. The phased array method is the most common approach for beam deflection, which requires a high uniformity of each element and the support of expensive and complex electronics. Moreover, the mirrored wave beam cannot be avoided for a linear array, resulting in the difficulty of distinguishing the defects at the symmetric positions. In this work, a metasubstrate-based piezoelectric transducer (MSBPT) is developed for unidirectional SH0 wave (the fundamental shear horizontal wave) beam deflection under a single driving source. The proposed MSBPT is constituted by a metasubstrate and two columns of thickness-shear mode PZT wafers. The metasubstrate is designed to provide the required phase gradient for unidirectional beam deflection, so no extra time delay is needed during excitation and reception. An analytical model is proposed to guide the design of the transducer to obtain the desired wave beam. The beam deflection properties of the MSBPT are validated by finite element (FE) simulations and experiments. It is observed that the MSBPT can concentrate the energy of the generated SH0 mode only in one desired direction with a small divergence angle. Moreover, the MSBPT can also serve as a sensor that only receives the SH0 mode propagating from the deflection angle and filters out the wave energies from other incident angles. Due to the simple configuration, the proposed MSBPT will be helpful in the controllable generation and reception of SH0 mode in SHM.

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Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 96%

Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 99%

Section: Configuration and Working Principle Of The Msbptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metasubstrate-based SH guided wave piezoelectric transducer for unidirectional beam deflection without time delay

Miao,

2024

Smart Mater. Struct.

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“…To accomplish this, a self-developed ultrasonicguided wave transducer is utilized as the array element, forming an arc sparse array [23,24]. The findings of this research provide valuable insights for the further advancement of ultrasonic-guided wave array imaging detection for welded structures.…”

mentioning

confidence: 98%

Full-rank Imaging Detection of Multi-frames of Ultrasonic-guided Waves in Welded Structural Plate Based on Arc Sparse Array

ZHU,

Yao,

Deng

et al. 2024

Preprint

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The utilization of ultrasonic-guided wave array imaging in the detection of weld structural plates holds significant importance. This study presents a novel approach for full-rank imaging of shear horizontal (SH)-guided wave arc sparse arrays in welding structure imaging detection, The paper discusses the mechanism behind the ultrasonic-guided wave arc sparse array, specifically focusing on its full-rank imaging of multi-frames (FRIMR) capabilities in the presence of weld scattering. The receiving aperture of the arc sparse array is analyzed and discussed using the amplitude matrix and time-transition matrix. Both synthetic aperture and FRIMR of the arc sparse array are examined. The research findings demonstrate that FRIMR detection using ultrasonic-guided wave arc sparse array effectively captures scattering information equivalent to the wavelength size in the imaging detection area. This results in an average signal-to-noise ratio (SNR) improvement of 39.2% in full-frame imaging compared to multi-frames imaging. The imaging experiment validates the feasibility of the proposed imaging principle, highlighting its potential for imaging detection of welded structures. The research presented in this paper serves as a crucial foundation for future studies and applications of array imaging detection using ultrasonic-guided waves in welded structural plates.

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A radar transducer for unidirectionally emitting and steering SH guided wave

Du,

Miao

2024

Ultrasonics

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Time-delayed layer-based piezoelectric transducer for unidirectional excitation and reception of SH guided wave

Cited by 3 publications

References 27 publications

Metasubstrate-based SH guided wave piezoelectric transducer for unidirectional beam deflection without time delay

Metasubstrate-based SH guided wave piezoelectric transducer for unidirectional beam deflection without time delay

Full-rank Imaging Detection of Multi-frames of Ultrasonic-guided Waves in Welded Structural Plate Based on Arc Sparse Array

A radar transducer for unidirectionally emitting and steering SH guided wave

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