Analysis of Thin Film Cracking and Buckling on Compliant Substrate by Fragmentation Test

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Abstract:

Application of coating fragmentation test for determination of coating properties is considered. A probabilistic model of coating fragmentation under uniaxial tensile loading is applied for coating and interface property identification of thin brittle coating/polymer substrate system. A finite element model is developed to simulate the process of buckle formation in coating strips during fragmentation test. The measured buckle geometry parameters and buckle density evolution as a function of the applied strain is used to estimate the interface toughness.

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Key Engineering Materials (Volumes 348-349)

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329-332

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September 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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