HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 20 SEARCH STATISTICS PAS - GDANSK DIVISION

Direct measurement of surface acoustic wave velocities and accuracy enhancement by wavelet transform

pp. 195-198, vol. 1, 1997

Klaus Kosbi
Institute of Materials Science and Structure Research, Physics Department, Bremen, Germany

Ulla Scheer
Institute of Materials Science and Structure Research, Physics Department, Bremen, Germany

Siegfried Boseck
Institute of Materials Science and Structure Research, Physics Department, Bremen, Germany

Key words:

Abstract: The aim of this work is to show that the wavelet transform as an image processing technique has the capability to improve quantitative measurements of surface acoustic wave (SAW) velocities. An outline of the basic properties of the wavelet transform and its advantages is given. We apply the wavelet transform to a recently developed measurement technique for the determination of SAW velocities. This technique is based on a modified scanning acoustic microscope (SAM) and can be thought as directly imaging SAWs that propagate on the surface of a solid. Results for the SAW velocity of silicon single crystals are presented.

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© Polish Acoustical Society - Gdansk Department, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported. (CC BY-NC-SA 3.0)