I have collected time-domain acceleration signals from the test rig through an accelerometer. Voltage signals are scaled to acceleration signals based on voltage sensitivity of accelerometer. Please refer the link given at the last to get the link for PDF attachment to see the time domain acceleration signals. Acceleration varies from 4 to -13 m/sec2. Later FFT analysis is done in Matlab software. Please refer to the link given at the end to get the link for attached PDF file to see the Frequency-domain acceleration signals. But here I got the acceleration peaks very high (of the order 70-100 m/sec2). Kindly suggest me whether the acceleration peaks convey the meaning ful result? Whether some kind of normalization is required for Y axis (acceleration peak) of the frequecy domain signal? Please guide me how to present the acceleration peaks in a meaning ful way?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks in advance!

Waiting for ur valuable suggestions...

Please click this link to get another link where PDF document of signal analysis is available:

http://imechanica.org/node/9195

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Help needed in analyzing FFT acceleration peak

**Physics Forums | Science Articles, Homework Help, Discussion**