An Introduction to Shaker Vibration Testing
Simulating the everyday life of any product is an integral part of its test and validation process. Shaker testing allows you to predict the failure modes of an equipment or component and monitor their dynamic behaviour to improve their reliability.
Learn more about shaker testing with our recorded webinar and discover more about the following topics:
- A brief history of LDS shakers
- An introduction to shaker testing including theory
- Which testing equipment and vibration systems are required?
- Information on typical shaker testing applications
- How can I add value to shaker testing?
- Random-on-Random: narrow bands of noise sitting on a broader band of random energy
- Sine-on-Random: single tracked pure sine frequencies sitting on a broader band of random energy
- Material preference is aluminium or magnesium alloys for strength to mass ratio and good damping properties
- Low mass, high stiffness and a minimum thickness of 20 mm
- Specified flatness tolerance and a good balance/C of G
- All interface hole patterns should incorporate counterbored holes, which allow for a flat washer and cap head screw/bolt
- Steel inserts should be used for interface to Jig
- 100 mm minimum hole spacing, in a square pattern where possible and consider how to control and where to position the accelerometers using 10/32 threaded holes
The actual control is still completed by the accelerometer measurement feedback by calculating the acceleration amplitude equivalent to displacement at each frequency. The transition frequency can be calculated by comparing the increase in acceleration with the displacement constant:
How do I select the right shaker system for my application? Which parameters do I need to consider? With the recorded webinar ‘How to Select the Right Shaker System for Your Application’ Brian Zielinski-Smith will guide you through the planning process.