Abstract
The temp. dependence of ultrasonic velocity was used to determine the stress generated in a disk made of A533B steel, the stress introduced by shrink fitting a rod of the same steel in a hole of slightly smaller size. The measurements were made using longitudinal and shear waves propagating along the thickness of the disk in the temp. range between room temp. and--40 deg C. Shear velocities were also measured with the polarization adjusted parallel to and perpendicular to the radius on which the stress measurements were performed. At all locations, the ultrasonic velocity decreases linearly as the temp. is increased and the temp. dependence of ultrasonic velocity can be determined to plus /minus 2%. 11 ref.--AA