In message
<D7E9B3C7419B3F41B63AB79347D7D6C768C910BD3D@HEMC08.hemcs.local>, dated
Wed, 1 Apr 2015, Julian Jones <ju...@hursley-emc.co.uk> writes:
We have had an enquiry from a customer about testing their special
copper foam material which is used as a heat sink and also doped with
some ferrous materials to improve RF absorption. I realise copper
doesn?t have great properties as an RF absorber as standard.
We have no expertise here in house and am looking to see who I can pass
them on to. I did find ANSI spec D4935. Sample sizes are small
typically 120mm diameter maximum.
This is a real can of worms (think Maxwell's Equations) to get results
that are generally applicable, i.e. can be used to determine the
properties of any particular object made of the material. That's
probably a job for the National Physical Laboratory.
On the other hand, simple objects could be designed using one of the
free finite-element programs. But that doesn't help with the issue of
generalized testing.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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