Hey BoxOfRain, sorry for jumping in like this. I would like to Invite you to tilde as you asked earlier, let me know how. If you haven't got one already, cheers.
there isn't "a way carbon fiber fails", it fails according to how the structure was designed, and how the carbon fiber is utilized.
buckling delaminations -- espescially when alongside honeycomb or similar substrates -- very much looks like a 'crumpling'; unless you want to classify all epoxy matrix failures as a 'shattering', but I think that's far too generous given the variety of failure modes.
Not sure about decompression, after all they started at normal pressure before the incident so they wouldn't have unreasonable amounts of gasses in theur bodies that could expand to huge volumes when pressure lessens.
