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Topic: Filtering Signal from Accelerometer Impact Data
Replies: 1   Last Post: May 8, 2013 1:04 AM

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Jonathan

Posts: 1
Registered: 5/7/13
Filtering Signal from Accelerometer Impact Data
Posted: May 7, 2013 6:28 PM
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Hello,

I have conducted a series of impact tests using an accelerometer mounted to the hammer of a Charpy impact tester. Instead of swinging through at the bottom of the swing arc, I installed a flat plate as an impact "target" to stop the swing.

From each of the tests, I acquired various sets of data from the impact. I aquired the following type of plot:

https://docs.google.com/file/d/0BxFCEJ8KYcAJMENERkltckp3Rms/edit?usp=sharing

After the first impact, the hammer bounced several times, explaining the repeated "bump" sections.

The objective of the tests were to determine the dampening effect of adding certain material cross sections to the hammer impact face.

This appears to be a sinusoidal waveform, which is expected. My question is, what would be the best way to filter this data in order to remove the noise associated with the accelerometer?

Any help is appreciated. Thank you



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