Safe tests performance

Question

We need to test a complex and expensive device – could you please give us recommendations on safe tests performance?

Answer

If by safety you mean strict observation of the specified vibration level, then you should configure corresponding settings of the shaker controller.

The easiest way to do that is to decrease shaker system parameters amount in the settings (displacement, acceleration, and velocity). In this case, the tests process will be stopped should the set values be exceeded.

A more complex way is to change the profile settings. To change the profile settings, one should measure the tested object FR value. The FR value is used to decrease sweep rate for sinusoidal vibration tests or to introduce additional point for random vibration testing in the resonance area or FR swing section.

The best option is to control tests process with several sensors. For feedback communication, choose the control option via the maximum value. In this case, there will be no overloads. The more sensors are used, the higher will be the tests performance safety.