Foam composite construction

Discussion in 'Materials' started by Pericles, Oct 23, 2007.

  1. Guillermo
    Joined: Mar 2005
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    Guillermo Ingeniero Naval

    Let's compare it with a well known product as Dyvinicell H130:
    (http://www.diabgroup.com/europe/literature/e_pdf_files/ds_pdf/H_DS_EU.pdf)

    Nominal density: 130 kg/m3
    Compressive strength: 3,0 MPa
    Compressive modulus: 170 MPa
    Tensile strength: 4,8 MPa
    Tensile modulus: 175 MPa
    Shear strength: 2,2 MPa
    Shear Modulus: 50 MPa
    Shear Strain: 40%

    (1 Pascal = 1 Newton/sqm)
     
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  2. kengrome
    Joined: Jul 2006
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    Location: Gulf Coast USA

    kengrome Senior Member

    All I know how to compare here is the density and compressive strength, and although the divinycell is a little bit heavier it is also more than 4 times stronger in compression.
     
  3. Pericles
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    Pericles Senior Member

    Ken,

    Yes, 3.0 MPa equals 3000 kN / m2, which pretty much rules Foamglas out of consideration. You wouldn't believe how difficult it is to find the compressive strength of Meranti ply though. I wanted it for comparison. According to the Forest Products Lab. in Wisconsin, ordinary sheathing plywood ranges between 20.7 to 34.5 MPa.
     
  4. Man Overboard
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    Man Overboard Tom Fugate

    Meranti (Hydrotech) Compression Parallel to Grain - 52.9 N/mm2
     

  5. Pericles
    Joined: Sep 2006
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    Location: Heights of High Wycombe, not far from River Thames

    Pericles Senior Member

    Tom,

    Thanks for that figure, which means if I have got the wording correct, the compressive strength may be expressed as 52.9 MPa. No wonder epoxy/Meranti ply composite craft are so tough!

    Perry
     
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