Sci-fi topic: Shall we one day be growing our boats?

Discussion in 'Boat Design' started by daiquiri, Dec 17, 2012.

  1. daiquiri
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    daiquiri Engineering and Design

    2000 micrometers = 2 mm. Then it could work, imo, provided that the formula is still applicable to this case too. The present case is perhaps more similar to a load-transmission through CSM - because the lighting-shape filaments do not transmit loads in a straight line:
    [​IMG]

    Edit:
    Check this similar electric discharge video: https://www.youtube.com/watch?v=SYraS3LwbIo
    The explanation: http://en.wikipedia.org/wiki/Lichtenberg_figure
     
  2. rxcomposite
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    rxcomposite Senior Member

    I think so. You just have to substitute the tensile strength of the metal whisker.
    The formula for the Ultimate strength is
    Tu=Vf(1-Lf/2L)Tf+VmTm where:
    Tu= ultimate strength of composite
    Vf= volume fraction of fiber
    Lf= critical fiber length
    L= length of fiber
    Tf= tensile strength of fiber
    Vm= Volume fraction of matrix
    Tm= Tensile strength of matrix

    Fiber orientation is important even in glass fiber technology. Because the fibers is a mixture of long and short, they use a process to ensure that filaments are parallel. That is why I suggested magnetism to ensure alignment of the fibers. This has another advantage too. Less pocket for resin, greater fiber volume.

    PS

    Glass fibers diameter ranges from 3.5 to 23.24 microns depending on the designation with 9 microns diameter typical of E glass fibers.
     
    Last edited: Dec 19, 2012
  3. alan craig
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    alan craig Senior Member

    Rwatson in an earlier post in this thread suggested UV cured epoxy 3d printing. That process already exists - a light beam (or two complementary light beams) are scanned across the surface of a tub of epoxy or other polymer to cure it where the light touches, then the build platen is lowered in the liquid polymer and the next layer is printed.

    I found this thread just after unretiring and getting some temporary work at a university in Chatham, UK and this is what I saw there. The boat below is printed in about 18 sections, it is 73" long overall and 11.5" beam. The printer used was a Dimension SST.
     

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  4. rwatson
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    rwatson Senior Member

    Found one -




    found a main supplier too

    http://www.solarez.com/
     
  5. daiquiri
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    daiquiri Engineering and Design

    Looking at all these 3D printing videos, just have to quote Doug Lord's signature:

    Yes, it is a Revolution

    :)
     
  6. El_Guero

    El_Guero Previous Member

    "Soylent .... Soylent green is people."

    ;)
     
  7. Aerynt
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    Aerynt New Member

    Going back to Daiquiri's first post, there was a 1000 lb car design competition in 2010 and one of the concepts was from Nissan called the iV that was to be grown on a farm.
    A report can be found here and some pictures of the Nissan concept can be found here.
     
  8. Petros
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    Petros Senior Member

    yes, but can you build a pretty wood boat out of a vat of polymer goo?
     
  9. gonzo
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    gonzo Senior Member

    Technology starts simple and gets more complex by steps. Parts of boats have been grown for centuries as a previous post shows. There were crooks and other parts made that way. It is not so hard to envision larger parts produced through genetic engineering of plants. Giant bamboo with more weather and rot resistance could grow pontoons.
     
  10. Petros
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    Petros Senior Member

    Interesting article on 3D printing and the third world (and boats). Some university students built or "printed" a 2.5 meter plastic canoe using a home made printer made of salvaged parts from a used plasma cutter. They have a "milk carton boat race" locally in Seattle, the boat must be made of milk cartons. this team melted milk cartons and used their homemade large scale "printer" to build up a canoe hull.

    [​IMG]

    http://www.economist.com/news/scien...ique-could-help-poor-countries-well-rich-ones

    more pics I found:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  11. daiquiri
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    daiquiri Engineering and Design

    That Nissan concept is fantastic, and is the closest thing I've seen so far to what I've seen in my dream. ;)
    Thanks for the link.
     
  12. Petros
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    Petros Senior Member

    what is new about a 1000 lb car, before the feds started requiring all kinds of heavy equipment, there were lots of 1000 lb cars you could buy. A Fiat 600 or X1-9, 850, The Austin Healy sprite, the MG Miget, the first Honda cars imported were about that heavy, there was an air-cooled BMW car that was very light (my uncle had one), Lancia, Toyota, etc all had lightweight and inexpensive cars that weighed about 1000 lbs.

    You can not meet current federal requirements with a 1000 lb cars, the darn 16 airbags weigh about 300 lbs by themselves. And their safety record is rather suspect as far as I am concerned. better ways to improve safety without adding all that heavy and costly equipment.
     
  13. daiquiri
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    daiquiri Engineering and Design

    I can see at least 2 distinguishing things:

    1) the design (styling) is extremely fancy:
    [​IMG]
    [​IMG]

    (sure, if you have problems with your knees or a hernia, they will have to pull you out of it...)

    2) the production method of the shell is unortodox, to say the least:
    [​IMG]

    It's bold. I like it.
     
  14. rxcomposite
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    rxcomposite Senior Member

    Or you could fall asleep while driving because the sitting(?) position is like lying on a hammock streched between trees.:D

    Here is one more in case you missed it.

    And another futuro concept from Mazda.
     

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  15. Petros
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    Petros Senior Member

    looks like even a minor accident will mean death.
     
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