Predicting coating failure using the central limit theorem and physical modelling

B. R. Hinderliter, S. G. Croll

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

In service, coatings are assaulted by huge numbers of ultraviolet photons, moisture molecules, pollutant molecules, thermal or other stresses with additional, occasional insults. Individually, these arrive at indeterminate times and locations so either Monte Carlo simulations or the statistics of random processes can be used to estimate the accumulation of damage. These damage results can then be used to calculate the deterioration in coating properties using well-known and robust physical models. In this way, not only can appearance properties like gloss and yellowing be modelled, but also the coating integrity via its fracture toughness or barrier properties, via electrochemical impedance. Additional physical detail or processes may be included, at several points, to produce a more complete predictive simulation or interpretative scheme. Simple calculations of how accelerated weathering affects coating service lifetime demonstrate how inconsistencies may arise between accelerated testing and natural exposure.

Original languageEnglish (US)
Title of host publication5th International Symposium on Advances in Corrosion Protection by Organic Coatings
Pages1-26
Number of pages26
Edition1
DOIs
StatePublished - Dec 29 2010
Event5th International Symposium on Advances in Corrosion Protection by Organic Coatings - Cambridge, United Kingdom
Duration: Sep 14 2009Sep 18 2009

Publication series

NameECS Transactions
Number1
Volume24
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other5th International Symposium on Advances in Corrosion Protection by Organic Coatings
Country/TerritoryUnited Kingdom
CityCambridge
Period9/14/099/18/09

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