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  • Judi Lynn (4032 posts)
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    MIT RESEARCHERS HAVE DEVELOPED A SPONGELIKE MATERIAL 10 TIMES STRONGER THAN STEE

    MIT RESEARCHERS HAVE DEVELOPED A SPONGELIKE MATERIAL 10 TIMES STRONGER THAN STEEL
    By Luke Dormehl — January 10, 2017 12:15 PM

     

     

    Stainless steel? Don’t make us laugh! A team of researchers at the Massachusetts Institute of Technology (MIT) has just developed one of the strongest lightweight materials known to man, woman and, well, frankly every living creature on Earth. Formed by compressing and fusing flakes of graphene using a combination of heat and pressure, the resulting creation boasts a sponge-like configuration with just 5 percent density of steel — but 10 times its strength.

    Based on all-around wonder material graphene, MIT’s new discovery is described this month in the journal Science Advances. The new 3D graphene material has a labyrinthine structure composed of a continuous surface of its 2D counterpart.

    “The curvature of the surface in the 3D space is caused by distribution of pentagon and heptagon rings in [a] certain way, making the geometry feature different from planar 2D graphene, which is composed of carbon atoms that are arranged in hexagonal rings,” researcher Zhao Qin told Digital Trends.

     

     

    WillyT, ozoneman, GloriaMundi and 3 othersPastiche, Peace Patriot, SurrealAmerican like this

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  • ThouArtThat (2787 posts)
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    1. You Tube Video Below

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    • Peace Patriot (1275 posts)
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      2. Thanks! I've always felt that geometry was the key to everything.

      It’s the only math class I loved in school.

      I gather that Einstein thought that, too.

      Geometry minds rule.

      (Ha!  Didn’t mean to rhyme.  I’m good at that, too, but at not much else.)

    • Judi Lynn (4032 posts)
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      4. Thank you for taking the time to add this.

  • happyslug (138 posts)
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    3. The question what is it good for?

    For example Stainless Steel is considered a WEAK Steel, regular steel is stronger.  This is the main reason for the lack of stainless steel Cars (Galvanized Steel provides all most all of the protection of Stainless Steel and is cheaper and leaves the steel stronger).

    Aluminium, Titanium and even Carbon Fiber are all stronger then steel but have limitations:

    Aluminium has a low melting point compared to steel and while its mass is stronger, its volume is three times the same mass as steel (thus the same THICKNESS of Steel is much stronger the the same thickness of Aluminum, but if you compare one pound of steel to one pound of aluminium, the Aluminum will be three times as strong.  This is the reason Aluminium bikes tubes are much thicker then steel bike tubes).

    Titanium has the same volume as Steel but more strength then Aluminum, and like Steel can withstand high temperatures (on planes going over 2000 mph, the only metals that can be used are Titanium and Steel, other metals melt at the heat generated at that speed). Above 2000 mph, you are looking at ceramics to take the heat, nothing else can handle the heat (Thus heat shields on in-coming space vehicles tend to be ceramic).

    Carbon Fiber is not used on high speed planes for it has a low melting point.  It has uses, but is expensive compared to the above metals.   Thus where to use this Material?   In the case of Carbon-Fiber, the use tends to be in places where strength is required but no heat resistance is required and cost is a secondary issue (thus the first use was on Jet Fighters, but on struts and other interior structural parts).

    I suspect the same with this material.  Use in places where price is secondary but strength is needed but no meed to worry about heat.  The issue is it is really needed, so will something cheaper perform the same job?  Carbon Fiber has been around since the 1960s, though use on civilian items only in the last 20 years. Carbon Fiber is strong and can take a beating, and the price is getting reasonable.   Thus the real question is how does this new material differ from Carbon Fiber already in use and is it more cost effective to use it or present day Carbon Fiber.

    Side Note:  No comment on life expectancy.  Kevlar was developed in the 1960s as an extra long fiber.  Such fibers are inherently strong but subject to break down if exposed to light.  Nylon has the same problem, but that was solved in the 1930s by developing a coating over the fiber. Kevlar was treated the same and with that treatment can last for decades.   Other long fibers have NOT had that track record.  One material proposed to replace Kevlar was when invented shown to be stronger then Kevlar and was supported as the replacement for Kevlar.  The problem was after five years, enough of the fiber has broke down that the resulting helmets were weaker then a Kevlar Helmet twice they age.  I have NOT heard of any problem with Carbon Fiber as to age, if it breaks it can NOT be fixed (Unlike a Steel part that can be welded back together) but if in good shape will still work as design.   This is another question mark on this new material, is it like natural fiber and coated Nylon and Kevlar, that is can last for decades, or is it like those other long fiber material the broke down after five years?  Only time will tell, but long fibers tend to break down the issue is how and how long does that occur with this material.