《Glossary of Commonly Used Vibration and》.pdf

V I B R A T I O N C O N T R O L S E L B A Glossary of Commonly Used Vibration and T L A C I T Vibration Control Terms P O Absolute. A term applied to Average. Refer to a textbook on Crossover Frequency. In sinusoidal D I calibration (e.g. of an accelerometer) electrical engineering. In the exclusive vibration testing, the unique foreign R G S based upon the primary standards of case of a pure sine wave, the average frequency at which the required S M mass, length and time. (See also value is 0.636 x peak value. displacement yields the desired D R R O A F O T comparison calibration.) acceleration and vice versa. A B L D P Averaging. Summing and suitably A E R Absorber. A device capable of soaking dividing several like measurements to Cycle. The complete sequence of B up vibration. improve accuracy or to lessen any instantaneous values of a periodic E S asynchronous components. event, during one period. T I E N R Acceleration. Acceleration is rate of A U R T G C change of velocity with time (denoted Balancing. (Mechanical) Adjusting Damping. Dissipation of oscillatory or , U B R 2 2 M T as dv/dt or d x/dt ), along a specified the distribution of mass in a rotating vibratory energy, with motion or with S O C D Y I axis, usually expressed in g or element, to reduce vibratory forces time. Critical damping CC is that value E G I N R gravitational units. It may refer to generated by rotation. of dampi