• chaogomu@lemmy.world
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    10 小时前

    Hardness isn’t the best thing to have in armor. In fact, extreme hardness means extreme brittleness.

    Tensile strength is more desirable in armor. That’s the sort of strength that a string or rope, or Kevlar will have.

    Those can stretch a bit before breaking.

    Kevlar will stretch a bit when catching a bullet, this does a few things, but importantly it slows the bullet before stopping it.

    So this new material will likely show extreme tensile strength rather than hardness.

    • CoffeeJunkie@lemmy.cafe
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      8 小时前

      Correct. 🙂 Reminds me of when I wanted new tires & I was complaining about how some tires were rated for a criminally short life. I wondered which ones lasted the longest.

      The mechanic then remarked that sure, they can make tires that last a hell of a long time & never puncture. But the ride would be so terrible because the tires would be tough, stiff, would work your suspension harder, and it would cost a fortune to boot. It’s not worth it. There are multiple material, usage considerations when making a product. Really makes you appreciate the experts in their various fields.