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- since 1996 -

Canadian Institute for NDE
We are specialized in training for Radiography, Ultrasonics, Magnetic Particle, Liquid Penetrant, Eddy Current and emerging NDT technologies.
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Technical Discussions
Philippe Rubbers
Engineering
SCM, South Africa, Joined Nov 1998, 22

Philippe Rubbers

Engineering
SCM,
South Africa,
Joined Nov 1998
22
06:45 Jul-23-2004
Materials used in probe shoes

Dear colleagues

For an inspection with limited access, I am required to either trim my probe's shoe (wedge) or use a shoe with a slower sound velocity, such that my probe is flatter (and therefore has a smaller footprint).
My question is this:
1) Can I use Teflon for my shoe, which has a sound velocity of 1.35km/s (cl) and 0km/s(ct). (so in theory should be OK)
2) Are there other materials that would be better suited for this heavy beam bending?... (even slower than Telfon)
3) Since it has a 0km/s transverse velocity, would it not be better than materials that do have a bulk modulus?
4) Are there any suggestions on how I can bend my beam such that I can get into the limited space, and what are your experiences concerning these applications. (I cannot get smaller probes, so changing the shoe is my only alternative, the probe is a Phased array probe).

Best regards



 
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