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Author: tracylam
Time: 08/15/07 20:47 PST
This is a reply to message no. 19017 by cessna
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I presume I excitated the clamped-free beam at its resonance frequency. It is because I varied the vibration frequencies from the shaker carefully at the frequency range near the fundamental frequency of the beam and tuned the frequencies until the maximum amplitude at the free end of the beam is record.

I excitated the beam for about an hour using sine excitation. By the peak ratio method, the synchronous amplification factor (Q factor) is 17.4. May I know the defination of a "high value" of Q factor? Can I calculate the failure time using the Q factor?

Thanks a lot.

 Best regards,


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