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 in-
fancy, 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: