Implications of substrate geometry and coating thickness on the cracking resistance of polymer-based protective coatings

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dc.contributor.authorWray, Lesley-Anne
dc.contributor.authorAyre, David
dc.contributor.authorIrving, Phil E.
dc.contributor.authorJackson, Paul A.
dc.contributor.authorJones, P. R.
dc.contributor.authorZhao, F.
dc.date.accessioned2019-08-22T17:41:43Z
dc.date.available2019-08-22T17:41:43Z
dc.date.issued2018-12-31
dc.description.abstractWelded steel T-sections of different weld fillet geometries coated with water ballast tank protective coatings were subjected to thermal cycling with a temperature range from 60°C to -10°C. Cracks developed in the coatings at the weld line, propagating longitudinally along it. The number of cycles required to create 1 mm cracks was strongly dependent on the weld geometry and the coating Dry Film Thickness (DFT). Finite Element Modelling (FEM) was employed to calculate thermally induced strain fields in the coatings subjected to the same temperature range. FEM predicted that the greatest strain concentrations are present at the coating surface within the weld fillet region. Increased DFT and decreased fillet radius leads to increased maximum principal strains. Numerical analysis predicts that greatest strain ranges promoting the earliest cracking/failure are found in thicker coatings applied to smaller weld radii. Experimental observations confirm this.en_UK
dc.identifier.citationWray LA, Ayre D, Irving PE, et al., (2018) Implications of substrate geometry and coating thickness on the cracking resistance of polymer-based protective coatings. Procedia Structural Integrity, Volume 13, 2018, pp. 1768-1773en_UK
dc.identifier.issn2452-3216
dc.identifier.urihttps://doi.org/10.1016/j.prostr.2018.12.370
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14457
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCoatingsen_UK
dc.subjectThermal Strainsen_UK
dc.subjectFatigueen_UK
dc.subjectFEM Analysisen_UK
dc.subjectCracking Failureen_UK
dc.subjectCoating Lifeen_UK
dc.titleImplications of substrate geometry and coating thickness on the cracking resistance of polymer-based protective coatingsen_UK
dc.typeArticleen_UK

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