Based on these results, the HP system was updated to a HP
5451A system, and a more extensive set of tests was performed
by the undergraduate advanced vibration class (class of 1971 and
’72). Groups of 2 to 3 students were given a project to use impact
or step relaxation for testing of a variety of test objects. There were
approximately 10 groups per class. Fourier analysis was in its infancy, and the student projects actually contributed significantly
to the transient testing state of the art. Some of the contributions
of the student projects to transient testing: