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
#2[flagged]
Re: To build ships that break ice, U.S. must relearn to cut steel
#3"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 steel, yet is lighter than fiberglass
Make it out of hemp aerogel and you could carry the boat.
Re: To build ships that break ice, U.S. must relearn to cut steel
#4"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.
Re: To build ships that break ice, U.S. must relearn to cut steel
#5"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…
The problem with carbon fiber and epoxy composites. Once it cracks, you cannot repair it, easily. It relies on a continuous composite structure. You can't patch it because that patchwork joint will just be a weak spot.
So you are talking about writing off tens of millions of dollars of a boat just because someone lost control and hit something too hard.
Steel is infinitely repairable, cut out the damaged section and weld in new steel.
Damage will and does occur to boats.
Re: To build ships that break ice, U.S. must relearn to cut steel
#6Re: To build ships that break ice, U.S. must relearn to cut steel
#7[flagged]
If there's a workaround, it's ok. Users usually post workarounds in the thread.
This is in the FAQ at https://news.ycombinator.com/newsfaq.html and there's more explanation here:
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
Re: To build ships that break ice, U.S. must relearn to cut steel
#8[deleted]
Re: To build ships that break ice, U.S. must relearn to cut steel
#9"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.
Well there's always reinforced ice: https://en.m.wikipedia.org/wiki/Project_Habakkuk
;-)
Re: To build ships that break ice, U.S. must relearn to cut steel
#10"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…
A boat you could carry couldn’t break ice.