Use of a Gaussian transducer to correct ultrasonic wave attenuation for diffraction and wedge angle in solids

Author

Edward T. Karkut

Date of Award

8-1985

Degree Type

Thesis

Degree Name

Master of Science

Major

Engineering Science

Major Professor

M. A. Breazeale

Abstract

A study is made of ultrasonic waves propagating in steel samples whose surfaces are intentionally nonparallel. By using a recently designed Gaussian transducer one now is able to correct for the effects of both diffraction and wedge angle on measured pressure amplitudes and hence determine the intrinsic attenuation of the material under investigation. A through-transmission technique is used to obtain pulse echo patterns from a steel plate having facets whose angles range between 0 and 0.018 radians. A mathematical model is developed which corrects ultrasonic echo heights for diffraction and wedge angle.

Finally, a computer program is given and its use to correct ultrasonic echo amplitudes for frequencies of 3 and 6 MHz is illustrated.

Recommended Citation

Karkut, Edward T., "Use of a Gaussian transducer to correct ultrasonic wave attenuation for diffraction and wedge angle in solids. " Master's Thesis, University of Tennessee, 1985.
https://trace.tennessee.edu/utk_gradthes/14041