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Bilz Vibration Technology, Inc.

Telephone (440) 735-3072                                                                                                                                                             5353 Majestic Parkway-Unit A

Fax (216) 274-9198                                                                                                                                                                     Bedford, OH, USA 44146-1756

After hours: 440-478-3456                                                                                                                                                                  E-mail: info@bilz-usa.com

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Vibration Measurement catalog page 40-41

Measurement and Technical V

The measurement and technical vibration analysis of emmissions and immissions is compared to acceptable limits (graph 1).  As can be seen from graph 2, different limit values must be observed, depending on the location of the machine. This standard aims at laying down principles according to which mechanical shocks can be measured in buildings, enabling the determination of effects of vibrations on human beings and building construction.  Another relevant example for the necessity of a vibration analysis is the mounting of high precision coordinate measuring machines as well as of other testing, measuring or grinding machines. As a rule, measurement tests must be carried out on proposed locations for such machines to ensure that local ground oscillations do not exceed permissible values.  To this end, oscillation accelerations within a given frequency spectrum(1–100 Hz) are taken down, because a simple summation value measurement would give only an approximate indication of the exact environmental conditions. The evaluation of the power path signals takes place with a Fast Fourier analyzer, indicating the measured value for each frequency of the spectrum (vibration acceleration in g). Should the interferences (vibration magnitude) be outside the admissible range, a suitable isolation can be worked out with the assistance of our computer calculation programs.

Very accurate and sensitive vibration analyses at low frequencies are carried out with a high tech Geophone. With the Geophone it is possible to measure vibration amplitudes from 0,01 μm/s at frequencies from 0,2 to 30 Hz. Especially in the nano-tech and semiconductor industry as well as in the field of cutting edge 3D metrology, absolute accurate vibration measurements is of great importance to achieve optimal and customer specific vibration isolation.

Vibration Analysis

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