1932 36 209 Vibrograms were obtained showing the vibration of different parts of the fuselage at various frequencies.
1950 21 Apr. 431/2 The principal parameters of a vibrogram from which its effect on a building can be estimated are the maximum amplitude and the average frequency of the vibration.
1975 XI. 445 (heading) Damping determination according to vibrograms of random oscillations in linear systems.