Posted by Gordon England on April 30, 2003 at 00:13:21:

In Reply to: residual stress between coating and substrate posted by Brad Lucht on April 29, 2003 at 20:57:00:

: Refering to the paper at the following website:

: http://dresser-rand.com/e-tech/PDF%20Files/tp101.pdf

: Specifically, Eqn. 2 at the bottom of the page, for the solution of stress in the coating.

: No reference is given for this equation. The derivation is not shown. The closest I have been able to find is the following:

: stress(c) = [E delta(alpha) delta(T)]/[1- (poisson's ratio)]

: Have you ever seen Eqn. 2 before?
: Any idea of how it has been derived?
: References you could point me toward?

Hi Brad

Can't help with first two questions. Don't think formula is very helpful in calculating residual coating stress. Far too many variables not accounted for.

The following links should give good reading on this subject:

http://asq.web.psi.ch/ASQ/projects/thermetcoat/JB_2000_02.pdf

http://www.msm.cam.ac.uk/mmc/research/plasmaspray/num_model_detail.html

http://www.msm.cam.ac.uk/mmc/publications/twc010.pdf

http://www.msm.cam.ac.uk/mmc/research/plasmaspray/material_properties.html

http://www.msm.cam.ac.uk/mmc/research/plasmaspray/prod_tbc.html

Regards Gordon

Follow Ups:

• Re: residual stress between coating and substrate hadi 11:10:27 04/20/04(0)
• Re: residual stress between coating and substrate hadi 11:07:48 04/20/04(0)

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