You could find an image of carbon fiber on the net somewhere and convert it to grey scale in photoshop or whatever, invert for specular and revert for bump(or vice versa) whatever your looking for. Heres a quick one I did for ya to check out(;

Its not great, but it is ok.

The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science...