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Buckling and cracking of thin films on compliant substrates under compression

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Buckling and cracking of thin films on compliant substrates under compression

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Title: Buckling and cracking of thin films on compliant substrates under compression
Author: Cotterell, Brian; Chen, Zhong
Copyright year: 2000
Abstract: It is shown that unless the substrate is at least as stiff as the film, the energy stored in the substrate contributes significantly to the energy release rate of film delamination under compression either with or without cracking. For very compliant substrates, such as polyethylene terephthalate (PET) with a indium tin oxide (ITO) film, the energy release rate allowing for the deformation of the substrate can be more than an order of magnitude greater than the value obtained neglecting the substrate's deformation. The argument that buckling delaminations tunnel at the tip rather than spread sideways because of increase in mode-mixity may need modification; it is still true for stiff substrates, but for compliant substrates the average energy release rate decreases with delamination width and the limitation in buckled width may be due to this stability as much as the increase in mode-mixity.
Subject: DRNTU::Engineering::Materials
Type: Journal Article
Series/ Journal Title: International journal of fracture
School: School of Materials Science and Engineering
Rights: © 2000 Kluwer Academic Publishers. This is the author created version of a work that has been peer reviewed and accepted for publication by International Journal of Fracture, Kluwer Academic Publishers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1023/A:1007628800620].
Version: Accepted version

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