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To build ships that break ice, U.S. must relearn to cut steel
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Re: To build ships that break ice, U.S. must relearn to cut steel
#12[deleted]
Re: To build ships that break ice, U.S. must relearn to cut steel
#13"This new idea could reduce steel’s carbon emissions by 90%" https://www.freethink.com/energy/decarbonizing-steel Why is steel necessary for ships? From "Plant-based epoxy enables recyclable carbon fiber" (2022) https://news.ycombinator.com/item?id=30138954 : > And once it’s completed you have an insanely strong material that makes steel look weak and brittle. It’s reported to be as much as ten times stronger than st…
Carbon fiber materials have excellent tensile strengths, especially under steady-ish loads.
The front of an icebreaker's hull mostly faces compressive loads, with lots of shocks from hitting ice.
Try searching for "OceanGate Titan" if you want to read more about the performance of carbon fiber composites under large compressive loads in a marine environment.
Re: To build ships that break ice, U.S. must relearn to cut steel
#14"This new idea could reduce steel’s carbon emissions by 90%" https://www.freethink.com/energy/decarbonizing-steel Why is steel necessary for ships? From "Plant-based epoxy enables recyclable carbon fiber" (2022) https://news.ycombinator.com/item?id=30138954 : > And once it’s completed you have an insanely strong material that makes steel look weak and brittle. It’s reported to be as much as ten times stronger than st…
You need mass to break ice.
> You need mass to break ice.
this is one of the narrow cases where pounds comes off the bench to say, "actually, you need weight"
(icebreakers slide/ride up on top of the ice and the weight of the ship breaks breaks it ice downward)
Re: To build ships that break ice, U.S. must relearn to cut steel
#15"This new idea could reduce steel’s carbon emissions by 90%" https://www.freethink.com/energy/decarbonizing-steel Why is steel necessary for ships? From "Plant-based epoxy enables recyclable carbon fiber" (2022) https://news.ycombinator.com/item?id=30138954 : > And once it’s completed you have an insanely strong material that makes steel look weak and brittle. It’s reported to be as much as ten times stronger than st…
"Stronger than steel" is a common materials science catchphrase, but it usually carries more than enough asterisks, daggers, and double-daggers to skewer practical applications.
Re: To build ships that break ice, U.S. must relearn to cut steel
#16Do we really need to OWN icebreakers? Maybe we could start a website where countries and companies who own icebreakers can operate them for the benefit of other countries and companies who want to use them. They just walk to the shore in the Canadian north, click the "Call Icebreaker" button on the app and wait for an icebreaker someone else owns to arrive.
Re: To build ships that break ice, U.S. must relearn to cut steel
#17[flagged]
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Re: To build ships that break ice, U.S. must relearn to cut steel
#18Just wait a few years, there won't be any ice.
Re: To build ships that break ice, U.S. must relearn to cut steel
#19Just wait a few years, there won't be any ice.
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Re: To build ships that break ice, U.S. must relearn to cut steel
#20Do we really need to OWN icebreakers? Maybe we could start a website where countries and companies who own icebreakers can operate them for the benefit of other countries and companies who want to use them. They just walk to the shore in the Canadian north, click the "Call Icebreaker" button on the app and wait for an icebreaker someone else owns to arrive.
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