Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66033
Type: Artigo de periódico
Title: Evaluation of varnish and paint films using digital image processing, energy dispersive X-ray fluorescence spectrometry, and chemometric tools
Author: Pereira, FMV
Bueno, MIMS
Abstract: This article reports an analytical study of modifications occurring on surfaces coated by 17 varnishes and 10 paints. The surface films were submitted to accelerated laboratory tests and atmospheric environmental exposures. Digital image processing, energy dispersive X-ray fluorescence spectrometry (ED-XRF), and principal component analysis (PCA) were applied. Digitalized images were obtained using a conventional scanner and converted into gray color scale histograms. The data were organized into a matri and analyzed with PCA. This method permits the classification of weatherproofing products according to their performance in the tests, avoiding subjective interpretations. ED-XRF spectra combined with PCA were also efficient for evaluating deterioration processes of varnishes and paints, confirming the results from digitized images.
Subject: Digital image processing
Principal component analysis
Energy dispersive X-ray fluorescence spectrometry
Quality control
Paint
Country: EUA
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s11998-009-9165-5
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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