[CAUT] Wire Stretch

[John Delacour]

At 5:59 pm -0500 30/4/07, Ron Nossaman wrote:

>I don't think long term wire elongation is much of a factor at all, if any.

Amazing!

>  I agree it's ridiculous that information about wire elongation 
>seems to be such a valuable secret as to not be available. I'm 
>trying to chase down some believable (official, recognized, 
>sanctified) source of this information so we won't have to do this 
>every year (he raves).

Start here <http://scienceworld.wolfram.com/physics/Elasticity.html>

At 7:47 pm +0100 27/4/07, John Delacour wrote:

>Love (A Treatise of the Mathematical Theory of Elasticity - 1926. 
>From Dover) cites a number of previous researchers and notes an 
>experiment by Vicat:- " He found that wires held stretched, with a 
>tension equal to one quarter of the breaking stress, retained the 
>length to which this tension brought them throughout the whole time 
>of his experiments (33 months) , while similar wires stretched with 
>a tension equal to half the breaking stress, exhibited a notable 
>gradual increase of extension."

<http://art-et-histoire.com/index4.php?segarch.php?>
<http://www.1911encyclopedia.org/Elasticity>




JD