scholarly journals METHOD OF EXCITATION OF QUASI LONGITUDINAL ACOUSTIC WAVES IN LAYERED STRUCTURES

2021 ◽  
Vol 18 (4) ◽  
pp. 4-10
Author(s):  
Ya. M. Olikh ◽  
O. E. Belyaev ◽  
Ya. I. Lepikh
Keyword(s):  
Wave Vector ◽  
Acoustic Waves ◽  
Plate Thickness ◽  
Layered Structures ◽  
Film Plane ◽  
Frequency Range ◽  
Longitudinal Acoustic ◽  
Displacement Direction ◽  
Longitudinal Acoustic Waves

The analysis of methodological possibilities of excitation of quasi-longitudinal (QL) acoustic waves of the megahertz frequency range in layered structures GaN-on-sapphire is studied and carried out. Volume-type transducers polarized by plate thickness are used to generate and detect QL waves. It is concluded that quasilongitudinal modes (QL) can be excited by this method – the so-called Anisimkin (AN) waves, for which the displacement plane is localized in the film plane and the displacement direction is directed along the wave vector.

Interference of opposing longitudinal acoustic waves in an isotropic absorbing plate and a periodic structure with defects

2001 ◽  
Vol 47 (6) ◽  
pp. 721-726 ◽  
Author(s):  
A. A. Karabutov ◽  
V. V. Kozhushko ◽  
I. M. Pelivanov ◽  
G. S. Mityurich
Keyword(s):  
Periodic Structure ◽  
Acoustic Waves ◽  
Longitudinal Acoustic ◽  
Longitudinal Acoustic Waves

Short‐Period Nonlinear Viscoelastic Memory of Rocks Revealed by Copropagating Longitudinal Acoustic Waves

2018 ◽  
Vol 123 (5) ◽  
pp. 3993-4006 ◽  
Author(s):  
Xuan Feng ◽  
Michael Fehler ◽  
Stephen Brown ◽  
Thomas L. Szabo ◽  
Daniel Burns
Keyword(s):  
Acoustic Waves ◽  
Longitudinal Acoustic ◽  
Nonlinear Viscoelastic ◽  
Short Period ◽  
Longitudinal Acoustic Waves

scholarly journals Generation and detection of coherent longitudinal acoustic waves in ultrathin 1T’-MoTe2

2019 ◽  
Vol 115 (22) ◽  
pp. 223103
Author(s):  
Nicolas Rivas ◽  
Shazhou Zhong ◽  
Tina Dekker ◽  
Meixin Cheng ◽  
Patrick Gicala ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Longitudinal Acoustic ◽  
Longitudinal Acoustic Waves

Measurement of velocity distribution for longitudinal acoustic waves in welds by a laser optoacoustic technique

2007 ◽  
Vol 53 (4) ◽  
pp. 471-477 ◽  
Author(s):  
A. Yu. Ivochkin ◽  
A. A. Karabutov ◽  
M. L. Lyamshev ◽  
I. M. Pelivanov ◽  
U. Rohatgi ◽  
...  
Keyword(s):  
Velocity Distribution ◽  
Acoustic Waves ◽  
Longitudinal Acoustic ◽  
Longitudinal Acoustic Waves
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