A planar ultrasonic tomography using shear waves

Author

Ko, D.S. ; Meyyappan, A. ; Wade, G.

Author_Institution

Dept. of Electron. Eng., Mokwon Univ., Taejon, South Korea

fYear

1996

fDate

8-9 Apr 1996

Firstpage

85

Lastpage

88

Abstract

The authors study the effect of using shear waves in scanning acoustic microscopy in which the specimens are solid. For any specimen with a shear modulus immersed in the microscope´s water bath, mode conversion will take place at the water-solid interface. In order to compare the operation of shear-wave tomography with that of longitudinal-wave tomography the authors have simulated tomographic reconstruction for each. Shear-wave velocities are lower than those of longitudinal-wave and hence the wavelengths at the same frequency are smaller. For this and other reasons the authors can expect that the resolution of shear-wave tomography to be substantially better than that for longitudinal-wave tomography

Keywords

acoustic microscopy; acoustic tomography; ultrasonic imaging; longitudinal-wave tomography; planar ultrasonic tomography; scanning acoustic microscopy; shear waves; simulated tomographic reconstruction; solid specimens; water bath immersion; Acoustic imaging; Acoustic propagation; Acoustic waves; Frequency; Image reconstruction; Microscopy; Optical reflection; Solids; Surface acoustic waves; Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Analysis and Interpretation, 1996., Proceedings of the IEEE Southwest Symposium on

Conference_Location

San Antonio, TX

Print_ISBN

0-7803-3200-8

Type

conf

DOI

10.1109/IAI.1996.493732

Filename

493732