What is the natural frequency vibration test?

A natural frequency is the frequency at which a system will oscillate after an external force is applied and then removed. Most products have many natural frequencies. During vibration testing using vibration shakers, a sinusoidal vibration resonance scan or resonance search is used to study resonances in products.

How do you measure natural frequency?

Impact test: One of the most commonly used methods for measuring a system’s natural frequency is to strike it with a mass and measure the response. This method is effective because the impact inputs a small amount of force in the equipment over a large frequency range.

What is natural frequency analysis?

Natural frequency analyses are used to determine the dynamic properties of a system and to identify its resonant frequencies. Some frequencies can cause elements to ‘sing. At the same time, we can also use this knowledge of natural frequency to dampen an object’s resonant frequencies and vibrations.

How to diagnose resonance and natural frequency?

The same happens in cost down, when the RPM gain a small distance from the natural frequency, the vibration decreases immediately. There are 3 tests that you can do in order to diagnose resonance. This test is performed by recording the vibration during the stoppage.

How does the amount of vibration affect the natural frequency?

The amount of vibration produces small structural changes that momentarily change the natural frequency as well as the damping, causing it to behave slightly different at different levels of vibration. All of this turns balancing complicated. Learn how to Diagnose Resonance.

Which is the best domain for vibration analysis?

The result is acceleration/vibration amplitude as a function of frequency, which allows performing analysis in the frequency domain (or spectrum) to gain a deeper understanding of the vibration profile. Most vibration analysis will typically be done in the frequency domain.

How is vibration analysis used in the real world?

Nevertheless, vibration analysis can be used to predict how a system will react to a given input and gives engineers the tools needed to ensure the survivability of their systems. Vibration testing allows them to understand the vibration environment.