Characterization and imaging of single layered materials by the Lamb wave lens
Author
Değertekin, F. Levent
Advisor
Atalar, Abdullah
Date
1991Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
The Lamb wave lens, which was introduced earlier as a new kind of lens for
scanning acoustic microscope, is analyzed theoretically. A simulation program
capable of handling single layered materials with different material parameters
and bonding conditions is developed. The validity of theory is investigated
by comparing the simulation results with the experimented ones for speciidly
prepared samples. Parameter sensitivity of V{f) curves are used to test the
characterization ability of the lens in layered materials. Sul)surface imaging
ability of the Lamb wave lens is also investigated by forming amplitude and
peak frequency images of some samples.