Re: [ATM] Blank ratios for different materials.

["Arjan te Marvelde" <arjan.te.marvelde@hetnet.nl>]

Quite a range for E.
The suggested relationship with yield strength is even farther from clear.
Typical breaking strength is 40 MPa, on average...
... but this value varies wildly between 15 and 150, depending on history,
glass quality, etc..

AtM

> 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
>

_______________________________________________
ATM mailing list http://www.atmlist.net/