Abstract
Ultrasonic wave scattering was studied from elliptical discontinuities of various aspect ratios (ratio of major to minor axes). The discontinuities are in titanium which is immersed in water. The amplitude of the scattered wave is measured at various angles for broadband (12‐MHz wide) pulses. The experiment which is in the ka > 1 region is analyzed based on elastodynamic diffraction theory. This theory offers an inversion process to obtain the size of the discontinuity. There is very good agreement between experiment and theory. [This research was sponsored by the Center for Advanced NDE operated by the Science Center, Rockwell International, for the Advanced Research Projects Agency and the Air Force Materials Laboratory under Contract F33615‐74‐C‐5180.]
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