Sine Vibration vs. Random Vibration Testing. Which Should You Perform?
Elite Electronic Engineering, Inc.
Since 1954, we've been your complete testing lab for EMC, Environmental Stress, Photometric, and Durability testing.
When it comes to vibration testing there are two popular types to consider: sine and random. We receive frequent requests for clarification on which test to run specific products on. The answer is, of course, it depends. So here’s a bit of background to help you make a decision.
Sine Vibration Testing
Sine vibration testing applies a single frequency to a test item and selectively excites resonant structures within the device. In a swept sine test a vibration sine tone is ramped up and down through a range of frequencies and for a specified rate and duration.
Random Vibration Testing
A random vibration test is one comprised of vibration energy at all frequencies over a specified range. The vibration frequency components that make up the input signal for a random test combine in amplitude and phase to create a time waveform that appears on an oscilloscope as random noise. The characteristics of the random waveform are constantly updating and changing within the bounds of the programmed random input.
We’ve been running vibration tests at Elite for a long time so if you need assistance in specifying a vibe test for your product contact us to discuss the particular details of your product and your end-use application. With multiple vibration test systems and large item capability, Elite is among the most capable dynamics testing labs in the world to get your project started quickly.
Continue reading and learn more in our related blog about which testing you should perform based on your needs.
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