scholarly journals Elastic Property Estimation of Surface Layer of Layered Structure by Measuring Love Wave Propagation Characteristics using Laser Doppler Vibrometer

2018 ◽  
Vol 23 (1) ◽  
pp. 109-116
Author(s):  
Yusuke CHIBA ◽  
Tadashi EBIHARA ◽  
Koichi MIZUTANI ◽  
Naoto WAKATSUKI
Keyword(s):  
Wave Propagation ◽  
Surface Layer ◽  
Elastic Property ◽  
Layered Structure ◽  
Love Wave ◽  
Laser Doppler Vibrometer ◽  
Laser Doppler ◽  
Propagation Characteristics ◽  
Property Estimation

VISUALIZATION OF GUIDED WAVE PROPAGATION WITH LASER DOPPLER VIBROMETER SCANNING ON CURVED SURFACES

2008 ◽  
Author(s):  
T. Hayashi ◽  
Y. Kojika ◽  
K. Kataoka ◽  
M. Takikawa ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Laser Doppler Vibrometer ◽  
Guided Wave ◽  
Laser Doppler ◽  
Curved Surfaces ◽  
Guided Wave Propagation

Love Wave Propagation in Prestressed Piezoelectric Layered Structure

2016 ◽  
Vol 08 (04) ◽  
pp. 1650045 ◽  
Author(s):  
Shishir Gupta ◽  
Abhijit Pramanik ◽  
Mostaid Ahmed ◽  
Arun Kumar Verma
Keyword(s):  
Wave Propagation ◽  
Initial Stress ◽  
Layered Structure ◽  
Love Wave ◽  
Love Waves ◽  
Piezoelectric Film ◽  
Elastic Substrate ◽  
Open Case ◽  
Piezoelectric Layered Structure ◽  
General Dispersion

In this paper, the effect of initial stress on the propagation of Love waves in a layered structure with a thin piezoelectric film bonded perfectly to an elastic substrate has been investigated. General dispersion equations, describing the properties of Love waves in both cases, electrically open case and electrically shorted case of the piezoelectric layer, have been obtained. The effects of inhomogeneity parameters in the substrate and the initial stress in both, the layer and the substrate on the phase velocity of Love waves, are analyzed and presented graphically. The analytical method and obtained results may find applications for designing the resonators and sensors.

Love wave propagation in a solid with a cold-worked surface layer

1981 ◽  
Vol 2 (1) ◽  
pp. 51-55 ◽  
Author(s):  
M. Hirao ◽  
Y. Sotani ◽  
K. Takami ◽  
H. Fukuoka
Keyword(s):  
Wave Propagation ◽  
Surface Layer ◽  
Love Wave ◽  
Cold Worked

scholarly journals Influence of Poroelasticity of the Surface Layer on the Surface Love Wave Propagation

2018 ◽  
Vol 85 (5) ◽  
Author(s):  
Adil El Baroudi
Keyword(s):  
Wave Propagation ◽  
Surface Layer ◽  
Phase Velocity ◽  
Dispersion Equation ◽  
Love Wave ◽  
Wave Attenuation ◽  
Love Waves ◽  
Velocity Variation ◽  
Fluid Viscosity ◽  
Benchmark Solutions

This work presents a theoretical method for surface love waves in poroelastic media loaded with a viscous fluid. A complex analytic form of the dispersion equation of surface love waves has been developed using an original resolution based on pressure–displacement formulation. The obtained complex dispersion equation was separated in real and imaginary parts. mathematica software was used to solve the resulting nonlinear system of equations. The effects of surface layer porosity and fluid viscosity on the phase velocity and the wave attenuation dispersion curves are inspected. The numerical solutions show that the wave attenuation and phase velocity variation strongly depend on the fluid viscosity, surface layer porosity, and wave frequency. To validate the original theoretical resolution, the results in literature in the case of an homogeneous isotropic surface layer are used. The results of various investigations on love wave propagation can serve as benchmark solutions in design of fluid viscosity sensors, in nondestructive testing (NDT) and geophysics.

Love wave propagation in piezoelectric layered structure with dissipation

Ultrasonics ◽  
2009 ◽  
Vol 49 (2) ◽  
pp. 281-286 ◽  
Author(s):  
Jianke Du ◽  
Kai Xian ◽  
Ji Wang ◽  
Yook-Kong Yong
Keyword(s):  
Wave Propagation ◽  
Layered Structure ◽  
Love Wave ◽  
Piezoelectric Layered Structure

Wave Propagation Characteristics on a Pipe-Type Cable in Particular Reference to the Proximity Effect

2013 ◽  
Vol 133 (12) ◽  
pp. 954-960 ◽  
Author(s):  
Akihiro Ametani ◽  
Kazuki Kawamura ◽  
Asha Shendge ◽  
Naoto Nagaoka ◽  
Yoshihiro Baba
Keyword(s):  
Wave Propagation ◽  
Proximity Effect ◽  
Propagation Characteristics

Laser Doppler vibrometer measurements to verify microslip model of the bonding process

2007 ◽  
Author(s):  
H. Seppänen ◽  
A. Kaskela ◽  
A. Wallin ◽  
M. Oinonen ◽  
E. Hæggström
Keyword(s):  
Laser Doppler Vibrometer ◽  
Bonding Process ◽  
Laser Doppler
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