TECHNIQUES FOR ANALYZING NONSTATIONARY VIBRATION DATA

Methods are described and discussed, from a general viewpoint, for analyzing data on non-stationary vibrations. The analysis must take into account both frequency and time as variables, so the methods used are complex and voluminous. The case is also considered in which the vibrations are non- stationary but repetitive. The application of the methods discussed in analysis of missile-vibration problems is outlined. (T.F.H.