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Re: [ATM] Blank ratios for different materials.
Arjan te Marvelde wrote:
> In principle the modulus can very well be the same while the materials still
> have a different yield or breaking strength.
Modulus, given in KgF/mm^2 the units used in Plop, is
Plate Glass 6000
Duran 50 6300
Pyrex 6400
Suprax 8848 6830
BVC 7200
Fused Silica 7400
Zerodur 9100
Density, given in KG/mm^3 the units used in Plop, is
Plate Glass 2.45E-6
Duran 50 2.23E-6
Pyrex 2.23E-6
Suprax 8848 2.3E-6
BVC 2.44E-6
Fused Silica 2.22E-6
Zerodur 2.48E-6
Poisson's ratio (dimensionless) is
Plate Glass 0.22
Duran 50 0.2
Pyrex 0.2
Suprax 8848 0.20
BVC 0.23
Fused Silica 0.17
Zerodur 0.24
For comparison, 6061 T-6 aluminum, a good and commonly used aluminum
alloy, has the following
Modulus 7025
Density 2.7
Poisson's ratio 0.33
--
Mark Holm
mdholm@telerama.com
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