Magnetostrictive properties of steel

[dondante]

Hi,

I'm looking for the magnetostrictive properties of bright mild steel (C = 0.15). I'm especially interested in its elongation vs magnetic field strength curve. I've been looking everywhere and can't seem to find any data.

Currently I'm busy with my engineering thesis on pulse-echo thermometry. I'm planning to send a pulse down a 2m steel rod (C1018) using a coil. The echoed pulse is picked up with a different coil.

I hope someone can help.

Cheers.

 

[Bob S]

We used to use thin magnetostrictive wires (< 1/16" dia) to read out high energy physics spark chambers with roughly 1 mm position resolution using the time delay of the magnetostriction pulse. See
http://adsabs.harvard.edu/abs/1966ihep.conf...29P
(This is a pay per view paper)