Is there a way to check for non-visible damage on a carbon frame? I had an accident on my carbon road bike. As I look at it, I do not see visible damage to the frame or forks. Is there a way that the frame can be tested for damage and if so, how do I get this testing done?
I've heard of people having their frames x-rayed, but for obvious reasons that's not very practical. The most reliable manner of checking a carbon frame for damage that I'm aware of is the old coin tap test. Get a quarter ( or whatever coin fits that form factor in your local currency) and go over the frame lightly tapping the edge of the coin against the frame. Intact carbon makes a distinct "clack", whereas damaged, delaminating carbon will have a much duller thud sound when tapped. Keep in mind that as the tubes change shapes and thicknesses the sound will gradually change. What you're looking for is a distinctly different muted report that abruptly changes within a very localized area.
Keep in mind that this is not a foolproof or exhaustive method of checking your frame and fork for damage, but it does work surprisingly well. I've found many a damaged frame this way.