HYDRAULIC PRESS VS TITANIUM AND CARBON FIBER, BENDING TEST
1,722,310
Published 2022-11-23
All Comments (21)
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Absolutely completely insane that Ocean Gate could hear their pressure chamber tearing apart on every dive and they didn’t immediately abort the design and restart from scratch.
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"Don't repeat at home" Yeah everyone casually has an hydraulic press lying around
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Interesting to see the difference between the plastic deformation of aluminium and titanium, and the brittle sudden failure of the brass and steel alloys. Then naturally, in the light of recent events (and the naturally occurring morbid curiosity), the further comparison to various composites and acrylic became suddenly very topical and interesting in its own right.
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acrylic 201kg. / 12.5 g. / ratio 16.08 fiber glass 648. /20.9. / 31.00 aluminium 657. / 26.8. / 24.51 carbon fiber 740. / 15.2 / 48.68 brass 916. / 84. / 10.9 titanium 2418. / 44.5. / 54.34 HS steel 3870. / 76.8. / 50.39
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Shows how the way things fail matters as much as how strong they are. Some purposes, you need them to hold shape, and if they fail all is lost, some things bent is better than broken
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I’m honestly most impressed with Fiberglass and how slowly it fails.
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When the steel broke, it gave us an Excellent example of the Normal Force at work, proving that as the press pushed the Block into the table, the table pushed back against the press, launching the block upward as soon as the steel broke
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Would be interesting to see the carbon fiber test redone comparing parallel and cross-hatched strand orientation at various angle combinations to determine the differences in strength and failure profile.
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“I wonder why they call it high speed steel… oh that’s why…”
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Started out so good , i dont understand why you wont put the max pressure of each item in a graph at the end . Its like watching a half done video
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"Do not repeat this at home". No, just do it for real by trying to dive to the Titanic.
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I fully expected the HSS to snap, but I didn't think it would snap so violently.
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It would be nice to see the final chart, summarizing the strengths versus mass on a single screen. It is also important to highlight if the material breaks or bends.
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Resistances: -7 - Acrylic: Weight: 12,5 G/Resistance: 201 KG -6 - Fiberglass: Weight: 20,9 G/Resistance: 648 KG -5 - Aluminum: Weight: 26,8/Resistance: 657 KG -4 - Carbon Fiber: Weight: 15,2 G/Resistance: 740 KG -3 - Brass: Weight: 84 G/Resistance: 916 KG -2 - Titanium: Weight: 44,5 G/Resistance: 2418 KG -1 - HSS: Weight: 76,8 G/Resistance: 3870 KG
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Im guessing titanium is used in submersibles for more reasons than just being strong and light. It also has other really good properties such as highly resistant to general corrosion in seawater and is an extremely stable metal as far as thermal expansion goes.
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This channel has taught me that under enough pressure pretty much anything can be a spring.
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The carbon fiber is wild, considering what we know about the imploded sub. First, sounds like gunshots/fireworks were described in earlier dives. Then in the texts between the sub and the surface, they reported "crackling" sounds. Then apparently failure of the hull. That's exactly what's shown and heard in this example.
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This just showed how amazingly strong and tough fibreglass can be, and how rigid carbon-fibre is! Titanium is of course an amazing metal having almost half the weight of steel. Tool steel did what I expected.
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now i see why making the ocean-gate submersible out of carbon fiber was a big mistake . R.I.P to the victims
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Insanely great! Fantastic demonstrations! Thanks!
