OceanGate CEO Stockton Rush reportedly used expired carbon fiber that was "past its shelf life" to build the doomed Titan submersible.
New evidence strongly suggests that OceanGate's submersible, which imploded and killed all passengers on its way to the Titanic wreck, was unfit for the journey. The CEO, Stockton Rush, bought discounted carbon fiber past its shelf life from Boeing, which experts say is a terrible choice for a deep-sea vessel. This likely played a role in the submersible's tragic demise.
That guy was a backyard inventor and charlatan, like those 19th century backyard aircraft inventors. It's one thing to take yourself out of the gene pool through your own recklessness, it's another to take others with you.
Rush bypassed over a hundred years of engineering lessons learned the hard way with the rationale it stifles innovation. He even fired and sued one of his own employees for calling him out on it. The sub had zero certifications and then he lied to customers about it saying his designs were approved by NASA and Boeing who never even heard of the guy.
Aside from the lack of safety engineering and lack of proper fail-safes in his design, there's a reason engineers don't use carbon fiber composites in subs. They have a tendency to delaminate. When used in aircraft, composites have to be examined and certified at a regular service interval with special inspection equipment.
I think that sub was an accident waiting to happen from day one. The hull probably failed due to inspection negligence and a failure to detect delamination. That's even if the hull could have been rated properly for 4km. If it wasn't the hull, it would been one of the other jury-rigged systems.
I can't believe people smart enough to acquire the wealth for that excursion weren't smart enough to check out the qualifications of the company hosting it. I think it was plainly obvious just looking at the sub yourself. A navigation system that consists of a consumer laptop PC and Logitech gaming controller should have been a dead giveaway.
I think most billionaires have a bit of their brain set to believe in themselves rather more than is warranted. It's great for making money, but maybe not something you want to put your life on the line over.
It could have been fresh from the factory and would have had the same result It was an improper application of the material to save on the more expensive titanium Same with the acrylic viewport, while not the best material it's the design that was non-standard Quartz would have been better but more expensive Not the time to cheap out on materials, design, nor experience when lives are on the line
From my limited experience with laying up carbon fiber, I know there's the raw carbon fiber cloth and there's liquid resin that you spread into the cloth. It's also very common to see carbon fiber cloth that is "pre-impregnated" - the resin is already applied to the cloth. Everyone calls this "pre-preg".
So I've seen a lot of folks online scratching their heads about "how can carbon expire?" or "my carbon fiber (bike/boat/etc.) is N-years old, is it expired?" but I think the most likely thing to expire is the resin. Once the resin is cured it is much more stable.
Any materials folks or structures engineers who want step in and correct me, please do.
It would have been a brilliant business move if it had worked. Shysters and cheats have been mixing in expired or substandard additives to food and drug products for all of history. As long as nobody dies, and you don't get caught, it's just free money in your pocket. I believe it was Heintz, around the turn of the 20th century, who lobbied strongly in favor of the Pure Food and Drugs Act in the US because he felt it would give him a competitive advantage over others by requiring the additives in food be safe. Crazy concept, right?
I hear more and more about this every day, about some design flaw. Didn't they think it through? I may be dumb but even I would nope out if the sub was unable to complete any of its test runs successfully.