Elastic and EM waves guided by periodic cracks or strips

Author

Danicki, E.

Author_Institution

Polish Acad. of Sci., Warsaw

fYear

1993

fDate

31 Oct-3 Nov 1993

Firstpage

831

Abstract

A system of perfectly bonded elastic halfspaces is analyzed. It is shown that periodic disbondings which are equivalent to in-plane cracks embedded in an infinite elastic medium, guide shear interfacial waves along the plane. Bragg reflection of the guided wave yields a wide relative stopband, apparently promising in applications in SAW-like resonators. It is also shown that entire, perfect bonding of two properly oriented piezoelectric halfspaces guides SH waves along the plane of bonding if there is a system of conducting strips (or entire metallization) in that plane. Applications are discussed. An EM leaky wave antenna is analyzed with help of the same method

Keywords

Green´s function methods; acoustic resonators; acoustic waveguides; antenna theory; cracks; crystal resonators; elastic waves; electromagnetic wave scattering; waveguide theory; Bragg reflection; EM leaky wave antenna; SAW-like resonators; conducting strips; in-plane cracks; infinite elastic medium; perfectly bonded elastic halfspaces; periodic disbondings; properly oriented piezoelectric halfspaces; relative stopband; shear interfacial wave; Bonding; Boundary conditions; Dispersion; Electromagnetic radiation; Equations; Fabry-Perot; Frequency; Glass; Reflection; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1993. Proceedings., IEEE 1993

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1993.339478

Filename

339478