4 ms·

Empty eggshells implode into thousands of increasingly smaller little shards. Is that what happened here?

by Solvency 3y ago

jacquesm 3y ago
Depends on the speed of the change. The pressure differential is what causes the material to fracture, the longer the differential exists the more fracturing you will get. Carbon fiber fails much like wood, you'll end up with a couple of larger fragments and a much larger number of smaller fragments, some too small to even see with the unaided eye. Unlike say a metal vessel during an implosion which would remain mostly connected but crushed or ripped into a few larger chunks depending on where the initial fault was. https://www.youtube.com/shorts/VNvEpDyUhvo https://www.youtube.com/shorts/VNvEpDyUhvo Shows nicely how a fault propagates through carbon fiber.
- ilyt 3y ago
  > Shows nicely how a fault propagates through carbon fiber. That's tensile fault, in sub it would be compressed, for which carbon fiber is much worse for. But yeah, it would be equally if not more violent Edit: https://www.youtube.com/watch?v=QYqOMjoz_i8 https://www.youtube.com/watch?v=QYqOMjoz_i8 https://youtu.be/PlvyZ1r1DCM?t=266 https://youtu.be/PlvyZ1r1DCM?t=266 https://youtu.be/Iedj9OZlEfI?t=330 https://youtu.be/Iedj9OZlEfI?t=330 not explosive because hydraulic press doesn't move as much but still shows it will instantly lose strength the second it is breaking
ilyt 3y ago
At some fraction of milliseconds, maybe ? We're talking about pressure difference comparable to big explosion so any break would most likely, on top of near-immediately expanding the hole, compress everything into the sub and possibly heat it enough to combust. 400 atm is only one order of magnitude of a difference from what water cutters use. It's insane amount of force, there is no "small leak" nor "small leak expanding", just "boom"

4 ms·

Empty eggshells implode into thousands of increasingly smaller little shards. Is that what happened here?

by Solvency 3y ago

Empty eggshells implode into thousands of increasingly smaller little shards. Is that what happened here?

jacquesm 3y ago
Depends on the speed of the change. The pressure differential is what causes the material to fracture, the longer the differential exists the more fracturing you will get. Carbon fiber fails much like wood, you'll end up with a couple of larger fragments and a much larger number of smaller fragments, some too small to even see with the unaided eye. Unlike say a metal vessel during an implosion which would remain mostly connected but crushed or ripped into a few larger chunks depending on where the initial fault was. https://www.youtube.com/shorts/VNvEpDyUhvo https://www.youtube.com/shorts/VNvEpDyUhvo Shows nicely how a fault propagates through carbon fiber.
- ilyt 3y ago
  > Shows nicely how a fault propagates through carbon fiber. That's tensile fault, in sub it would be compressed, for which carbon fiber is much worse for. But yeah, it would be equally if not more violent Edit: https://www.youtube.com/watch?v=QYqOMjoz_i8 https://www.youtube.com/watch?v=QYqOMjoz_i8 https://youtu.be/PlvyZ1r1DCM?t=266 https://youtu.be/PlvyZ1r1DCM?t=266 https://youtu.be/Iedj9OZlEfI?t=330 https://youtu.be/Iedj9OZlEfI?t=330 not explosive because hydraulic press doesn't move as much but still shows it will instantly lose strength the second it is breaking
ilyt 3y ago
At some fraction of milliseconds, maybe ? We're talking about pressure difference comparable to big explosion so any break would most likely, on top of near-immediately expanding the hole, compress everything into the sub and possibly heat it enough to combust. 400 atm is only one order of magnitude of a difference from what water cutters use. It's insane amount of force, there is no "small leak" nor "small leak expanding", just "boom"