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if
The term “good vibrations” has a special
meaning to the young. Most people
concede that there are good vibrations—
those produced by a symphonic
orchestra, for instance. No such con
cession is made, however, for vibrations
from a jackhammer or unbalanced lathe.
What can be done with such undesired
vibration? Here, for the nonexpert— A vibration calibration lab maintained by
RCA’s AstroElectronics Div. An
the engineer who wants to speak accelerometer is being calibrated on the
the language of vibrations, who wants shaker at left; the accelerometer cable
leads to a signal amplifier. After processing
to measure and analyze vibration and the signal is plotted by the X-Y plotter.
correct it—are guidelines for selection
of vibration-measuring equipment.
RATION
testing instrument
Selection
116 Circle 12-E on Yellow Card for extra copy. Machine Design
