Page 20 - Shock and Vibration Overview
P. 20
Equipment Setup
EQUIPMENT SETUP
Accelerometer Mounting
The method of mounting the accelerometer to the vibrating structure and the coupling
between the sensor and the measurement point is a critical factor in obtaining accurate
results. Mounting types and methods influence the resonant frequency of the
accelerometer. If/when the accelerometer’s mounting results in a reduction of its
natural frequency the bandwidth (or useful frequency range) is reduced.
Accelerometers, piezoelectric in particular, have a very high amplification factor at
resonance too; so it’s important to avoid using a mounting method that shifts the
resonance into the frequency range of your vibration environment. There are six main
mounting methods listed below; their frequency response is compared in Figure 10.
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