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Curvature Of Rectangular Coated Foils With Different Width-To-Length Ratios

Published online by Cambridge University Press:  10 February 2011

M. D. Tran ,
W. P. Vellinga  and
J. H. Dautzenberg
M. D. Tran
Affiliation:
Materials Technology, Mechanical Engineering, Eindhoven University of Technology, P.O.Box 513, 5600 MB Eindhoven, The Netherlands
W. P. Vellinga
Affiliation:
Materials Technology, Mechanical Engineering, Eindhoven University of Technology, P.O.Box 513, 5600 MB Eindhoven, The Netherlands
J. H. Dautzenberg
Affiliation:
Materials Technology, Mechanical Engineering, Eindhoven University of Technology, P.O.Box 513, 5600 MB Eindhoven, The Netherlands
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Abstract

This paper concerns the bending of rectangular foils with different width-to-length ratios, coated with a layer with high internal stress. Framework for the interpretation of experimental results is a description of the bending based on geometrically nonlinear elasticity. Calculations indicate that the (mean) biaxial modulus of coatings on foils may be determined by this method. Fully isotropic and isotropic-orthotropic bilayers are considered. Preliminary experimental results, of unbalanced magnetron sputtered PVD TiN coatings on stainless steel foil, are shown to be in qualitative agreement with the geometrically non-linear description of the bending of coated foils, provided anisotropy of the substrate and clamping conditions are taken into account.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 505 , 1997 , 533
Copyright
Copyright © Materials Research Society 1998

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References

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