scholarly journals Shear horizontal (SH) ultrasound wave propagation around smooth corners

Ultrasonics ◽  
2014 ◽  
Vol 54 (4) ◽  
pp. 997-1004 ◽  
Author(s):  
P.A. Petcher ◽  
S.E. Burrows ◽  
S. Dixon
Keyword(s):  
Wave Propagation ◽  
Ultrasound Wave ◽  
Shear Horizontal

Wave Propagation in a Piezoelectric Coupled Solid Medium

2002 ◽  
Vol 69 (6) ◽  
pp. 819-824 ◽  
Author(s):  
Q. Wang
Keyword(s):  
Wave Propagation ◽  
Wave Velocity ◽  
Electric Potential ◽  
Solid Medium ◽  
Electric Displacement ◽  
Piezoelectric Medium ◽  
Wave Number ◽  
Mode Shapes ◽  
Coupled Structures ◽  
Shear Horizontal

Shear horizontal (SH) wave propagation in a semi-infinite solid medium surface bonded by a layer of piezoelectric material abutting the vacuum is investigated in this paper. The dispersive characteristics and the mode shapes of the deflection, the electric potential, and the electric displacements in the thickness direction of the piezoelectric layer are obtained theoretically. Numerical simulations show that the asymptotic phase velocities for different modes are the Bleustein surface wave velocity or the shear horizontal wave velocity of the pure piezoelectric medium. Besides, the mode shapes of the deflection, electric potential, and electric displacement show different distributions for different modes and different wave number. These results can be served as a benchmark for further analyses and are significant in the modeling of wave propagation in the piezoelectric coupled structures.

Simulation of ultrasound wave propagation in heterogeneous materials

2015 ◽  
Vol 138 (3) ◽  
pp. 1764-1764
Author(s):  
Michael J. Lowe ◽  
Anton Van Pamel ◽  
Peter Huthwaite
Keyword(s):  
Wave Propagation ◽  
Heterogeneous Materials ◽  
Ultrasound Wave

Heat generation by ultrasound wave propagation in porous media with low permeability: Theoretical framework and coupled numerical modeling

2020 ◽  
Vol 124 ◽  
pp. 103607
Author(s):  
Borzouyeh Khanghahi-Bala ◽  
Ghassem Habibagahi ◽  
Siavash Ghabezloo ◽  
Arsalan Ghahramani ◽  
Bernhard A. Schrefler
Keyword(s):  
Numerical Modeling ◽  
Porous Media ◽  
Wave Propagation ◽  
Heat Generation ◽  
Theoretical Framework ◽  
Low Permeability ◽  
Ultrasound Wave

Broadband Reduction of the Second Harmonic Distortion During Nonlinear Ultrasound Wave Propagation

2010 ◽  
Vol 36 (10) ◽  
pp. 1568-1580 ◽  
Author(s):  
Mirza Pasovic ◽  
Mike Danilouchkine ◽  
Guillaume Matte ◽  
Antonius F.W. van der Steen ◽  
Olivier Basset ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Second Harmonic ◽  
Harmonic Distortion ◽  
Ultrasound Wave ◽  
Nonlinear Ultrasound

Wave Propagation in Periodic Piezoelectric Elastic Waveguides

2012 ◽  
Author(s):  
D. G. Piliposyan ◽  
K. B. Ghazaryan ◽  
G. T. Piliposian ◽  
A. S. Avetisyan
Keyword(s):  
Wave Propagation ◽  
Stop Band ◽  
Transmission Conditions ◽  
Band Gaps ◽  
Full System ◽  
One Dimensional ◽  
Dynamic Setting ◽  
Floquet Waves ◽  
Wide Range ◽  
Shear Horizontal

The prorogation of electro-magneto-elastic coupled shear-horizontal waves in one dimensional infinite periodic piezoelectric waveguides is considered within a full system of the Maxwell’s equations. Such setting of the problem allows to investigate the Bloch-Floquet waves in a wide range of frequencies. Two different conditions along the guide walls and three kinds of transmission conditions at the interfaces between the laminae of waveguides have been studied. Stop band structures have been identified for Bloch-Floquet waves both at acoustic and optical frequencies. The results demonstrate the significant effect of piezoelectricity on the widths of band gaps at acoustic frequencies and confirm that it does not affect the band structure at optical frequencies. The results show that under electrically shorted transmission conditions Bloch-Floquet waves exist only at acoustic frequencies. For electrically open interfaces the dynamic setting provides solutions only for photonic crystals. In this case the piezoelectricity has no effect on band gaps.

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