Posted by hadi on April 20, 2004 at 11:07:48:
In Reply to: Re: residual stress between coating and substrate posted by Gordon England on April 30, 2003 at 00:13:21:
: : 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
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