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Fitting probability distribution functions to saturation crack spacing distribution in substrate plastic straining test for thin films and coatings

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Ogwu, AA, Colleran, P, Maguire, PD, Lemoine, P and McLaughlin, JAD (2002) Fitting probability distribution functions to saturation crack spacing distribution in substrate plastic straining test for thin films and coatings. Surface Engineering, 18 (4). pp. 277-282. [Journal article]

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URL: http://dx.doi.org/10.1179/026708402225006204

DOI: 10.1179/026708402225006204

Abstract

Various approximations involving computer simulation, and the ab initio assumption of a suitable probability distribution prior to simulation, have been suggested in the literature for determining the critical crack spacing at saturation in the substrate plastic straining test for films or coatings on metallic substrates, i.e when the detachment of films from substrate occurs. An experimental investigation of silicon modified DLC films on steel substrates (304 stainless and mild steel) has employed a simple statistical procedure which reveals a very good match between the saturation crack spacing frequency distribution and the two parameter Weibull distribution function. This allows faster determination of the mean crack spacing distribution and eliminates the need for a further computer simulation stage in the analysis as is currently adopted in the literature. The approach reported is simpler and is applicable to the treatment of crack spacing frequency distributions matching other probability functions. Copyright Maney Publishing 2002

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:1530
Deposited By:Mrs Ann Blair
Deposited On:27 Nov 2009 13:49
Last Modified:15 Jun 2011 10:51

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