Good shit bro.
I was watching a video of a guy that imploded carbon fiber. I thought it would cave in. It did not, it shattered. So these dudes were air fried for a few milliseconds, then torn to shreds.
I still stand by the fact that you knew that shit was coming. It had to start creeking and cracking before it imploded.
And see that's why Carbon Fiber is not a good material to use for this, we don't know the "gives" it will yield under these conditions before it shatters. It doesn't bend and "give" like metal/alloys do. And we've been working with metal/alloys for over 100 years. CF is still a relatively new (around 30 years) material to use because of the cost and relatively difficult early manufacturing process.
2nd this mfkr screwed objects directly into the CF which would cause weak points.....he did 3 mostly successful dives (they came back alive.), this was the 4th dive, was there any testing, investigation and monitoring of the seals or integrity of the hull, (especially after running directly into the Titanic on the previous dive), ?!....we now know apparently not and that proved to be foolhardy and fatal.
CF makes good drive shafts, hoods / trunks....., be under consistent low/ relatively moderate pressure, heat, and use but also cover a large area and reduce weight.