Vibration testing

After a balance adjustment, the vibration displacement is measured and taken as the residual unbalance.

Using an accelerometer and single-channel FFT analyzer, the attenuation waveform of the vibration after excitation is measured and the one-degree-of-freedom damping ratio is determined from the result.

To measure the transfer function, an impulse hammer and accelerometer as well as a 2-channel FFT analyzer are required.

Using the SA-02 system, the loss factor of a material can be measured, using either the center excitation method or the cantilever method.