[NDE] Trouble designing Eddy Current Probe

[Bayard Beling Morales]

Hi there.

 This may be a very trivial question for some, but I´m having lots of trouble
with it.
 I´m trying to design and manufature a differential Eddy Current probe. But,
after weeks trying to produce the coil with an wire AWG #39 (breaking it every
time), I gave up on this design (the project coordinator made the design of the
coil) and I started to think it´s not possible to manufature this coil.
Actually, I think the design is wrong.
 The question is: where can I find about the designing of EC probes?

 Thanks in advance.

Bayard B. Morales
bayard.morales@ufrgs.br
UFRGS - Física