Transversely Inhomogeneous Nonlinear Surface Ultrasonic Monopulses in Solid Film-Substrate System

• Authors: M. Tecpoyotl-Torres , G. Vera-Dimas , V. Grimalsky , S. Koshevaya
• Languages of publication: EN

Abstracts

EN

Excitation of nonlinear acoustic monopulses, or baseband waves, is theoretically analyzed. The monopulses have a wide spectrum up till the gigahertz range ≤ 1 GHz. The propagation of waves is along the interface between a solid film and a solid substrate. A quadratic elastic nonlinearity in both contacting media of the system is taken into account. The nonlinear dynamics of waves depends essentially on the thickness of the film. The transverse inhomogeneity of the wave profile in the interface plane and the wave diffraction are taken into account, too. The baseband waves are not true solitons and manifest as single shock-like pulses in the case of an excitation from initial long rectangular pulses. The transverse inhomogeneity affects the dynamics of the shocks, and there is a possibility to focus the nonlinear monopulses.

Keywords

EN

43.25.Fe; 42.65.Tg; 62.50.Ef

Discipline

• 62.50.Ef: Shock wave effects in solids and liquids(for shock wave initiated high-pressure chemistry, see 82.40.Fp; see also 47.40.Nm Shock wave interactions and shock effects in fluid dynamics)
• 42.65.Tg: Optical solitons; nonlinear guided waves(for solitons in fibers, see 42.81.Dp)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 5
• Pages: 1118-1125

Dates

published

2014-05

received

2013-03-07

(unknown)

2013-12-17

Contributors

author

M. Tecpoyotl-Torres

• CIICAp, Autonomous University of State Morelos (UAEM), Cuernavaca Z.P. 62209, Mor., Mexico

author

G. Vera-Dimas

• CIICAp, Autonomous University of State Morelos (UAEM), Cuernavaca Z.P. 62209, Mor., Mexico

author

V. Grimalsky

• CIICAp, Autonomous University of State Morelos (UAEM), Cuernavaca Z.P. 62209, Mor., Mexico

author

S. Koshevaya

• CIICAp, Autonomous University of State Morelos (UAEM), Cuernavaca Z.P. 62209, Mor., Mexico

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Identifiers

DOI

10.12693/APhysPolA.125.1118