Influence of biasing stresses on the propagation of surface waves

• DOI: 10.1063/1.334725
• Publication Date: 2002-07-26T12:53:21Z
• Authors: B. K. Sinha; W. J. Tanski; T. Lukaszek; A. Ballato
• Keywords: Biasing

It is known that the propagation characteristics of elastic waves are influenced by nature biasing stress distributions in propagating medium. A knowledge magnitude such effects plays an important role improving performance and long term aging surface acoustic wave (SAW) devices. Generally, SAW devices employ thin platelike structures as medium waves. The deformation due to externally applied forces can be decomposed into extensional flexural deformations which have substantially different on change time delay between two observations points. This paper describes a study fractional components terms general expressed. information state disks has been employed previously reported perturbation procedure for equations motion small dynamic field superposed static bias. Computational results obtained changes crystalline quartz various orientations directions many simple systems disks. We considered cases rectangular plates cylindrical bending subjected normal pressures, well pair acting diametrically circular disk along azimuthal angles. Experimental moment-frequency effect ST-cut force-frequency both singly, doubly rotated Good agreement theoretical predictions experimental measurements.