I'm a lot more comfortable being the beta tester of a new design/engineering concept when the consequences of a product or material failure don't include me being turned into particulates...

More like one compressed glop

Wonder if it was designed to ASME code requirements for the pressure it was going to work in?

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Jim

He admitted to going rouge on design. You missed that news? he made a vid bragging about it.

I did not watch it. Not really sure what he means when he says that. Back when I was using ASME codes regularly during work I do not ever remember seeing the numbers to use for carbon fiber stress calculations but maybe my books were old. I'd have to look.

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Jim

I'm sure that a lot of educated guesses were part of the design specs. Henry Ford kinda roughed it out when he designed his first horseless carriage, and that worked out just fine. He just made a point of not driving it into the ocean...

But you see, by using carbon fiber, his 0 to 60 time dramatically improved.

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1986 300SDL, 362K
1984 300D, 138K

Here is an article that has footage of OceanGate CEO more or less boasting about “breaking rules.”

https://www.independent.co.uk/news/world/americas/florida-couple-drops-oceangate-lawsuit-b2366259.html

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1986 300SDL, 362K
1984 300D, 138K

I understand that his concern for higher performance is the reason that his hearse is undergoing a turbocharger installation...

Hah!

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1986 300SDL, 362K
1984 300D, 138K

How different is it? I always thought it was as strong in compression or tension.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Substantial difference. If I can find write up on it I'll post it.

Thepipingtalk.com covers some of it.

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Jim

It is 6000 pounds per square inch pressure at the target dive ships depth. Deflection from the pressure is equal on a sphere shape. Not on a cylindrical shape with end caps.

At worse the end caps should have been of simular material to the cylinders construction. The elasticity as such of the materials would have been similar.

Poor design for the purpose I felt. Just my opinion of course.

To put 6 thousand pounds per square inch into a better perspective. That is 860,000 pounds per square foot. Possibly the weight of a larger diesel locomotive engine or greater sitting on a square foot of material. Any deflection of the carbon fiber will create a shear loading in the resin that binds it. So my guess that normally there would or could be a life cycles lifespan involved as well. As it had already survived that depth many times already. Every dive to extreme depths weakens the material layup a little. Plus resins do absorb moisture. At operational pressures it might be almost like force feeding moisture into the resin component. Of the carbon fiber.

In a true implosion there is an inward force vector that tends to drive materials together. They actually try to pass each other. The remains I saw did not resemble a true implosion. Looked more like a breach of the vessel instead. Then again what do I really know?

If the cylinderical part of the vessel deformed with the pressure. It would possibly break the bolted on flange area. Remember it also would have been almost instantainious. A crack combined with the reduced structural integrity. Could have elements of two types of failures as well in my opinion.

I also have no doubt as an implosion was also heard. I will always suspect it was the secondary effect of another issue though. The shape may have just lost structural integrity first in some way. For example a very small stream leak at the pressures down there. You can cut steel with a water jet. Again the physical shape of the remains I saw indicated the presence of some water internally before the implosion took place.

Then again certain charactaristics of carbon fibre could have changed what I would have expected the implosion to look like.

rouge = red blush make up''

Rogue is someone going outside the rules.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

He was a rogue, made up as a dandy with rouge.

I thought it important to mention that I didn’t like the guy, the llittle bit I saw of him. He seemed pretty impressed with himself. He thought he was some kind of movie star.

IMHO.

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1986 300SDL, 362K
1984 300D, 138K