sees external pressure. carbon fiber composites are used very successfully for internal pressure vessels let s say a scuba tank. you can get two or three times multiple of what you can get out of steel or aluminum. for something external pressure, all of the advantages go away and all of the disadvantages come into play. if you are using a uniform material like steel or titanium or a ceramic or a acrylic, you can do computer modeling with a high degree of accuracy and confidence. the second you start to do carbon composite or any type of composite material you re introducing two interiors that are in contact with each other. the filament itself and the epoxy matrix it sits within. at that point you have degradation failure.
that type of pressure bottle. but for something that s seeing external pressure all of the advantages of composite materials go away and all the disadvantages come into play. so if you re using a uniform material like steel or titanium or ceramic or acrylic, you can do computer modeling with a high degree of accuracy and confidence. the second you start doing carbon composite or any kind of composite materials you re introducing two materials that are in contact with each other. the filament itself and then the epoxy matrix that it sits within. and at that point you have degradation failure. so we always understood that this was the wrong material for submersible hulls because with each pressure cycle you can have progressive damage. so it s quite insidious. because you may have a number of successful dives, which is what happened here, and then have it fail later.
what, this was an experimental design, there s no question about it. it was a carbon composite. you can tell us more about what that actually means. i mean, it s the kind of stuff used in spacecraft. but is it design for deep underwater? pressure and what is the, what is the danger of that kind of material in this kind of? environment it s completely inappropriate for a vessel that sees external pressure. you know carbon fiber composites are used very successfully for internal pressure. that s a scuba tank and you can take all of we get all steel or aluminum for that type of pressure. bottle with if you get like ceramic, or similar. you can do computer modeling with a high degree of accuracy and confidence. the second you
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