Finding damping coefficient of material

[srchandran]

i have found the damping factor of a plate from experimental vibration.

how can i find the damping coefficient of the material of the plate

 

[minger]

One of the more easy methods is the log decrement method. Basically, you displace the plate, release and measure the displacement as a function of time. The displacement should damp logarithmically which can give you the damping coefficient.

http://en.wikipedia.org/wiki/Logarithmic_decrement