Carbon Fiber vibration Fixture?

[floattuber]

Has anybody tried using carbon fiber as a fixture material? Here in the vibration lab, we were brainstorming about alternative fixtures for our products and an outside the box suggestion of carbon fiber came up. We're thinking why not? A foam core would be great for vibration damping, the carbon skin could be built up to be really stiff and the whole thing would be extremely light.

Does anybody know of any white papers or other documentation about this?

Thanks

 

[amanuensis]

When you create a composite material with carbon fiber, it's very curious but damping is always very light.

For example, when carbon fibers are mixed with a polymer such as epoxy (which have a heavy damping), then the resulting material has a light damping!

 

[Tmoose]

For stiffness efficiency the load paths have to be continuous straight lines. Feeding a force directly perpendicular into a flat panel means the bending stiffness of the panel is tested, and that is likely to be poor, relatively speaking, for panels with span/thickness ratios less than brontosaurus leg bone L/D.
Load path -

http://www.modernsteel.com/uploads/issues/february_2013/022013_steelwise.pdf

I have no clue how carbon fiber composites fare with fibers oriented to be compression, or if that is even the best orientation for known compression loading.