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[article]
Titre : Knowledge versus risk : Close study of substrate can identify precise causes of coating failures - Part 1 Type de document : texte imprimé Auteurs : Roger Dietrich, Auteur Année de publication : 2009 Article en page(s) : p. 126-131 Langues : Anglais (eng) Catégories : Métaux -- Surfaces
Polymères -- Surfaces
Surfaces -- Analyse
Surfaces -- Nettoyage
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : The role of the substrate in causing painting failures and ways in which these problems can be identified by modern analytical techniques are considered. Cleaning or pretreatment may remove only certain forms of contamination on polymeric substrates and may encourage rapid re-contamination. However, the precise nature of surface contamination or defects which cause problems can often be determined. Note de contenu : - Metal substrate quality equals surface quality
- Contaminants can be identified precisely
- Polymeric substrates may have 'built in' contamination
- Processing conditions may harm plastic substrates
- Cleaning processes may be only partly effective
- Cleaning itself may promote fresh contamination
- Metal pretreatment is also prone to failureEn ligne : https://drive.google.com/file/d/1yeOxuK_GbSK-edAli7ryNETwFYo_u309/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24166
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/2009 (04/2009) . - p. 126-131[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011199 - Périodique Bibliothèque principale Documentaires Disponible Knowledge versus risk (Part 2) / Roger Dietrich in EUROPEAN COATINGS JOURNAL (ECJ), N° 07-08/2009 (07-08/2009)
[article]
Titre : Knowledge versus risk (Part 2) : Identifying paint contaminants and their contribution to coating failures Type de document : texte imprimé Auteurs : Roger Dietrich, Auteur Année de publication : 2009 Article en page(s) : p. 34-37 Langues : Anglais (eng) Catégories : Revêtements -- Défauts:Peinture -- Défauts
Surfaces -- AnalyseIndex. décimale : 667.6 Peintures Résumé : An evaluation of data on paint failures showed that only 16 % could be attributed directly to poor paint quality. Common problems and some methods of identifying precisely the nature of unexpected materials in paint samples and applied paint films are discussed. It is shown how precise identification can help to find the causes of application failures. En ligne : https://drive.google.com/file/d/1pLeh7pCyOcYQW8BkH4zhPBNCuA6L1jQs/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5992
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 07-08/2009 (07-08/2009) . - p. 34-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011471 - Périodique Bibliothèque principale Documentaires Disponible Learning to recognize irregular feature on leather surfaces / Masood Aslam in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 5 (05/2021)
[article]
Titre : Learning to recognize irregular feature on leather surfaces Type de document : texte imprimé Auteurs : Masood Aslam, Auteur ; Tariq M. Khan, Auteur ; Syed Saud Naqvi, Auteur ; Geoff Holmes, Auteur ; Rafea Naffa, Auteur Année de publication : 2021 Article en page(s) : p. 169-178 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuir
Evaluation visuelle
Qualité -- Contrôle
Surfaces -- Analyse
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : As part of industrial quality control in the leather industry, it is important to identify the abnormal features in wet-blue leather samples. Manual inspection of leather samples is the current norm in industrial settings. To comply with the current industrial standards that advocate large-scale automation, visual inspection based leather processing is imperative. Visual inspection of irregular surfaces is a challenging problem as the characteristics of the abnormalities can take a variety of shape and color variations. The aim of this work is to automatically categorize leather images into normal or abnormal by visual analysis of the surfaces. To achieve this aim, a deep learning based approach is devised that learns to recognize regular and irregular leather surfaces and categorize leather images on its basis. To this end, we propose an ensemble of multiple convolutional neural networks for classifying leather images. The proposed ensemble network exhibited competitive performance obtaining 92.68% test accuracy on our own curated leather images dataset. Note de contenu : - LITERATURE REVIEW
- THE PROPOSED METHOD : Data augmentation - Convolutional neural network ensembles - Setting up the CNN and training process - Global average pooling
- EXPERIMENTAL DESIGN : Dataset - Performance measures - Benchmark deep learning methods - State-of-the-art methods for comparison
- RESULTS : Comparison with descriptors based machine learning methods - Comparison with deep learning based methods - Class Activations Maps (CAM)
- Table 1 : Comparison of models parameters with and without the GAP layer
- Table 2 : Computational complexity of pooling strategies
- Table 3 : Hyper-parameter values used in algorithms
- Table 4 : Comparison with the state-of-the-art methods in terms of classification accuracy. T acc stands for training accuracy, val acc for validation accuracy and test acc for test accuracy
- Table 5 : Comparison of methods in terms of precision, recall, F1-score and AUC
- Table 6 : Comparison of models in terms of accuracy, transfer learning, batch normalization, batch size using global average pooling and image size of 500 x 375DOI : https://doi.org/10.34314/jalca.v116i5.4291 En ligne : https://drive.google.com/file/d/1Ubev3KPms4yofj6BFf-ZgdPRP_AoZado/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35760
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 5 (05/2021) . - p. 169-178[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22726 - Périodique Bibliothèque principale Documentaires Disponible Life-stage analysis of solvent induced fissures under static stress in PET fibers / M. Ramisetty in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 4 (08/2013)
[article]
Titre : Life-stage analysis of solvent induced fissures under static stress in PET fibers Type de document : texte imprimé Auteurs : M. Ramisetty, Auteur ; A. Rodriguez, Auteur ; A. Aneja, Auteur ; Y. Wang, Auteur Année de publication : 2013 Article en page(s) : p. 376-385 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alcools
Déformations (mécanique)
Fibres textiles synthétiques -- Fissuration
Plan d'expérience
Polyéthylène téréphtalate
Polymères -- Surfaces
solvants
Surfaces -- AnalyseIndex. décimale : 668.4 Plastiques, vinyles Résumé : The paper discusses the impact of drawing poly(ethylene terephthalate) (PET) fibers in the presence of solvents, which consist of the first five homologues of aliphatic primary alcohols, namely methanol to amyl alcohol. The solvent induced deformation under tensile load leads to surface fissures characterized by four stages: fissure formation (birth), incipient draw (neck formation), partial draw, and full draw. This process results in internal void formation in the presence of a propagating neck. A design of experiment (DOE) was performed to screen out the process parameters critical for understanding surface fissure formation. Four process parameters were investigated: initial material properties (orien„tation) ; environment of draw (i.e. type of alcohols used as solvent) ; rate of extension ; and amount of extension. The response of solvent induced deformation were characterized by the natural draw force reduction ; number of fissures formed at time of birth, fissure width at time of formation, and neck angle. Of all the four process parameters involved, the analysis indicates that the material properties and amount of extension were the best predictors of solvent induced fissure formation. Organic solvents reduce the tension required for draw and create internal voids, a porous network, with possibly the penetrant being "sucked" into the interior of PET fibers drawn in the presence of alcohols. DOI : 10.3139/217.2708 En ligne : https://drive.google.com/file/d/1VkmmZfFk_I5tggqkig288LobCB2sm68a/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19282
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 4 (08/2013) . - p. 376-385[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15396 - Périodique Bibliothèque principale Documentaires Disponible A macroscopically nondestructive method for characterizing surface mechanical properties of polymeric coatings under accelerated weathering / Ching-Hsuan Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
[article]
Titre : A macroscopically nondestructive method for characterizing surface mechanical properties of polymeric coatings under accelerated weathering Type de document : texte imprimé Auteurs : Ching-Hsuan Chang, Auteur ; Chun-Chieh Tien, Auteur ; Hsiang-Chun Hsueh ; Lipiin Sung Année de publication : 2018 Article en page(s) : p. 913-922 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Contrôle non destructif
Essais dynamiques
Indentation des matériaux
Mesure
Microscopie confocale à balayage laser
Morphologie (matériaux)
Nanoindentation
Polyuréthanes
Rayures
Résistance à l'abrasion
Résistance au rayonnement ultraviolet
Revêtements -- Propriétés mécaniques
Surfaces (technologie)
Surfaces -- AnalyseIndex. décimale : 667.9 Revêtements et enduits Résumé : The surface of coatings and plastics is the first target in any degradation process initiated by ultraviolet (UV) radiation or mechanical stress (via scratch and abrasion). Surface damage can lead to changes in optical, morphological, and mechanical properties and can result in pathways for ingress of moisture and corrosive agents. Current test methods for monitoring performance of protective coatings focus on chemical properties and optical properties, such as color and gloss measurements, or invasive tests such as abrasion and cross-cut adhesion. In this study, a macroscopically nondestructive performance protocol using nanoindentation metrology via a well-controlled scratch test was applied to evaluate the scratch resistance and monitor the surface mechanical property changes in a protective coating under accelerated weathering. Polyurethane (PU) coatings with different polyol compositions were chosen for this study. Coating specimens were exposed to high-intensity UV radiation at 55°C and 75% RH conditions. Exposed specimens were removed at specified UV exposure times for surface modulus/hardness and scratch resistance characterization via nanoindentation and scratch test. The effect of polyol type and UV radiation dose on the scratch damage (scratch morphology) was investigated and correlated with the surface hardness and modulus of the materials. Note de contenu : - EXPERIMENTAL : Materials - UV exposure measurements - Polymer interface consortium scratch test protocol (PICSTP) - Suface mechanical measurements and scratch testing - Scratch morphology characterization
- RESULTS AND DISCUSSION : Effect of polyol type - Effect of UV radiationDOI : 10.1007/s11998-017-0042-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0042-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31116
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 5 (09/2018) . - p. 913-922[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20232 - Périodique Bibliothèque principale Documentaires Disponible Méthode d'évaluation de la biocontamination de surface des matériaux cimentaires par microscopie confocale à balayage laser / C. Chagnot in MATERIAUX & TECHNIQUES, Vol. 103, N° 2 (2015)
PermalinkMigration of reactable UVAs and HALS in automotive plastic coatings / Philip V. Yannef in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)
PermalinkNatural weathering performance and the effect of light stabilizers in water-based coating formulations on resin-modified and dye-stained beech-wood / Bodo Caspar Kielmann in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)
PermalinkA novel strategy to improve the dyeing properties in laccase-mediated coloration of wool fabric / Ting Zhang in COLORATION TECHNOLOGY, Vol. 133, N° 1 (02/2017)
PermalinkNumerical simulation and experimental validation of granite powder filled jute epoxy composite for slurry jet erosive wear / M. J. Pawar in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)
PermalinkOn the corrosion effects of reblasted steel / Carl Reed in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 1 (01/2018)
PermalinkPaints and coatings monitored by laser-induced breakdown spectroscopy / Taesam Kim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 3 (09/2007)
PermalinkPermalinkPlastiques. Evaluation de l'action des micro-organismes - Norme NF EN ISO 846 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1997)
PermalinkPoly(ethylene) glycol-modified, amphiphilic, siloxane–polyurethane coatings and their performance as fouling-release surfaces / Teluka P. Galhenage in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)
PermalinkPolymers under the chemical magnifying glass / Birgit Hagenhoff in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 4 (04/2014)
PermalinkPolypyrrole-modified multi-functional coatings for improved electro-conductive, hydrophilic and flame-retardant properties of polyamide 66 textiles / Chanchal Kumar Kundu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 4 (07/2023)
PermalinkPower-tool-cleaned surfaces : New insights into surface profile measurement / Jody Wenzel in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 5 (05/2018)
PermalinkLe prélèvement surfacique : vers un nouvel outil d'évaluation / William Esteve in HYGIENE & SECURITE DU TRAVAIL, N° 248 (07-08-09/2017)
PermalinkPreparation and surface properties of poly(2,2,2-trifluoroethyl methacrylate) coatings modified with methyl acrylate / An-hou Xu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
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