scholarly journals Development of a low frequency shear horizontal piezoelectric transducer for the generation of plane SH waves

2016 ◽  
Author(s):  
Guillaume Boivin ◽  
Martin Viens ◽  
Pierre Belanger
Keyword(s):  
Piezoelectric Transducer ◽  
Low Frequency ◽  
Sh Waves ◽  
Shear Horizontal ◽  
Plane Sh Waves

Low‐frequency piezoelectric‐transducer applications of ZnO film

1974 ◽  
Vol 25 (1) ◽  
pp. 10-11 ◽  
Author(s):  
Tadashi Shiosaki ◽  
Akira Kawabata
Keyword(s):  
Piezoelectric Transducer ◽  
Low Frequency ◽  
Zno Film

Scattering of plane sh waves by a semi-elliptical canyon

1974 ◽  
Vol 3 (2) ◽  
pp. 157-169 ◽  
Author(s):  
H. L. Wong ◽  
M. D. Trifunac
Keyword(s):  
Sh Waves ◽  
Plane Sh Waves

Shear horizontal (SH) waves propagating in piezoelectric–piezomagnetic bilayer system with an imperfect interface

2012 ◽  
Vol 223 (9) ◽  
pp. 1999-2009 ◽  
Author(s):  
Guoquan Nie ◽  
Jinxi Liu ◽  
Xueqian Fang ◽  
Zijun An
Keyword(s):  
Imperfect Interface ◽  
Sh Waves ◽  
Bilayer System ◽  
Shear Horizontal

Scattering of Anti-Plane (SH) Waves by a Shallow Semi-Elliptical Hill with a Concentric Elliptical Tunnel

2015 ◽  
Vol 20 (3) ◽  
pp. 363-382 ◽  
Author(s):  
Alongkorn Amornwongpaibun ◽  
Hao Luo ◽  
Vincent W. Lee
Keyword(s):  
Sh Waves ◽  
Plane Sh Waves

Interaction of a shear wall with the soil for incident plane SH waves

1972 ◽  
Vol 62 (1) ◽  
pp. 63-83
Author(s):  
M. D. Trifunac
Keyword(s):  
Incidence Angle ◽  
Closed Form Solution ◽  
Shear Wall ◽  
Elastic Half Space ◽  
Form Solution ◽  
Angle Of Incidence ◽  
Sh Waves ◽  
Incident Plane ◽  
Interaction Equation ◽  
Plane Sh Waves

Abstract The closed-form solution of the dynamic interaction of a shear wall and the isotropic homogeneous and elastic half-space, previously studied only for vertically-incident SH waves, is generalized to any angle of incidence. It is shown that the interaction equation is independent of the incidence angle, while the surface-ground displacements heavily depend on it. For the two-dimensional model studied, it is demonstrated that disturbances generated by waves scattering and diffracting around the rigid foundation mass are not a local phenomenon but extend to large distances relative to the characteristic foundation length.

Dynamic Interaction of Two Independent SDOF Oscillators Supported by a Flexible Foundation Embedded in a Half-Space: Closed-Form Analytical Solution for Incident Plane SH-Waves

2021 ◽  
pp. 1-24
Author(s):  
Liguo Jin ◽  
Liting Du ◽  
Haiyan Wang
Keyword(s):  
Analytical Solution ◽  
Closed Form ◽  
Half Space ◽  
Strong Interaction ◽  
Rigid Foundation ◽  
Structural Stiffness ◽  
Sh Waves ◽  
Closed Form Analytical Solution ◽  
Flexible Foundation ◽  
Plane Sh Waves

This paper presents a closed-form analytical solution for the dynamic response of two independent SDOF oscillators standing on one flexible foundation embedded in an elastic half-space and excited by plane SH waves. The solution is obtained by the wave function expansion method and is verified by comparison with the results of the special cases of a rigid foundation and the published research result of a flexible foundation. The model is utilized to investigate how the foundation stiffness influences the system response. The results show that there will be a significant interaction between the two independent structures on one flexible foundation and the intensity of the interaction is mainly dependent on foundation stiffness and structural stiffness. For a system with more flexible foundation, strong interaction will exist between the two structures; larger structural stiffness will also lead to a strong interaction between the two structures. When the structural mass and the structural stiffness are all larger, the flexible foundation cannot be treated as a rigid foundation even if the foundation stiffness is many times larger than that of soil. This model may be useful to get insight into the effects of foundation flexibility on the interaction of two independent structures standing on one flexible foundation.

Immunity of the second harmonic shear horizontal waves to adhesive nonlinearity for breathing crack detection

2021 ◽  
pp. 147592172110571
Author(s):  
Fuzhen Wen ◽  
Shengbo Shan ◽  
Li Cheng
Keyword(s):  
Crack Detection ◽  
Guided Waves ◽  
Lamb Waves ◽  
Second Harmonic ◽  
Sh Waves ◽  
High Order Harmonic ◽  
Thin Walled Structures ◽  
Harmonic Shear ◽  
Contact Acoustic Nonlinearity ◽  
Shear Horizontal

High-order harmonic guided waves are sensitive to micro-scale damage in thin-walled structures, thus, conducive to its early detection. In typical autonomous structural health monitoring (SHM) systems activated by surface-bonded piezoelectric wafer transducers, adhesive nonlinearity (AN) is a non-negligible adverse nonlinear source that can overwhelm the damage-induced nonlinear signals and jeopardize the diagnosis if not adequately mitigated. This paper first establishes that the second harmonic shear horizontal (second SH) waves are immune to AN while exhibiting strong sensitivity to cracks in a plate. Capitalizing on this feature, the feasibility of using second SH waves for crack detection is investigated. Finite element (FE) simulations are conducted to shed light on the physical mechanism governing the second SH wave generation and their interaction with the contact acoustic nonlinearity (CAN). Theoretical and numerical results are validated by experiments in which the level of the AN is tactically adjusted. Results show that the commonly used second harmonic S0 (second S0) mode Lamb waves are prone to AN variation. By contrast, the second SH0 waves show high robustness to the same degree of AN changes while preserving a reasonable sensitivity to breathing cracks, demonstrating their superiority for SHM applications.

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