Rayleigh Waves in an isotropic Body with Deep Periodic Grooves

• Autorzy: Danicki E.
• Języki publikacji: EN

Abstrakty

EN

Bragg scattering of waves propagating in a periodically disturbed substrate is widely applied in optics and micro-acoustic systems. Here, it is studied for Rayleigh waves propagating on a periodically grooved elastic substrate. Practically applied groove depth in the Bragg grating reflectors does not exceed a few percent of the Rayleigh wavelength. Here, the analysis is carried out for periodic grooves of larger depth by applying the elastic plate model for the groove walls. The computed results show that the surface wave existence and reflection depends strongly on both the groove depth and period, and that there are limited domains of both for practical applications, primarily in comb transducers of surface waves.

Słowa kluczowe

EN

surface acoustic waves; Bragg reflection; comb transducers

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2010
• Tom: Vol. 35, No. 1
• Strony: 67--74
• Opis fizyczny: Bibliogr. 12 poz., wykr.

Twórcy

autor

Danicki E.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawinskiego 5B, 02-106 Warszawa, Poland,

Bibliografia

• 1. Besserer H., Malishevsky P.G. (2004), Mode Series Expansion at Vertical Boundaries in Elastic Waveguides, Wave Motion, 39, 41-59.
• 2. Biriukov S.V., Gulyaev Yu.V., Krylov V.V., Plessky V.V. (1995), Surface Acoustic Waves in Inhomogeneous Media (Springer Series on Wave Phenomena), Springer, Berlin.
• 3. Brehovskich L.N. (1957), Waves in Layered Media [in Russian], IAN, Moscow.
• 4. Danicki E. (1984), Perturbation theory of surface acoustic wave reflection from a periodic structure with arbitrary angle of incidence, Arch. Mech., 36, 623-638.
• 5. Danicki E. (2000a), Periodic Crack-Model of Comb Transducers: Excitation of Interface Waves, Arch. Acoust., 25, 213-227.
• 6. Danicki E. (2000b), Periodic Crack-Model of Comb Transducers: Efficiency and Optimization, Arch. Acoust., 25, 487-507.
• 7. Danicki E.J. (2002), Scattering by periodic cracks and the theory of comb transducers, Wave Motion, 35, 355-370.
• 8. Danicki E.J. (2008), Evaluation of Planar Harmonic Impedance for Periodic Elastic Strips of Rectangular Cross Section by Plate Mode Expansion, ASME J. Appl. Mech., 041011-1-6.
• 9. Glass N.E., Maradudin A.A. (1983), Leaky surface-elastic waves on both flat and strongly corrugated surfaces for isotropic, nondissipative media, J. Appl. Phys., 54, 796-805.
• 10. Pagneux V. (2006), Revisiting the edge resonance for Lamb waves in a semi-infinite plate, J. Acoust. Soc. Am., 120, 649-656.
• 11. Quarry M.J., Rose J.L. (2002), Phase Velocity Spectrum Analysis for a Time Delay Comb Transducer for Guided Wave Mode Excitation, Lawrence Livermore Nat. Lab. Preprint UCRL-JC-138500.
• 12. Viktorov I.A. (1967), Rayleigh and Lamb Waves: Physical Theory and Applications, Plenum Press, New York.