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Authors
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Figiel, L. ; Lauke, B.
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Title
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Interface fracture of polymer films: blister test experiments and modelling
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Date
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21.11.2006
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Number
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12831
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Abstract
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The interface fracture between a rigid substrate and polymer film is investigated in this work using pressurised blister test experiments and modelling. The interface crack growth is studied for two different types of polymer films: stiff and compliant ones. The pressurised blister test is used to provide critical pressure-crack length curves for different loading media (water and electrolyte solutions) and loading rates. Two different analytical approaches and a numerical modelling concept are used to determine the critical total energy release rate as a function of the crack length (crack resistance curve or R-curve). A relatively flat R-curve is observed for the system with the stiff polymer film, whilst R-curve for the compliant film system exhibits an increasing tendency. The mixed-mode fracture behaviour occurs for both investigated polymer film systems, as shown by the value of the mixed-mode angle that is constant for all investigated crack lengths. R-curves are nearly unaffected by different loading media, whereas the loading rate has a strong influence on the interface fracture of the compliant file system. Finite element method-based prediction of the total energy release rate is in good agreement with that obtained from analytical expressions.
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Publisher
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International Journal of Fracture
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Wikidata
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Citation
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International Journal of Fracture 139 (2006) 71-89
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DOI
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https://doi.org/10.1007/s10704-006-6999-z
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