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Cracking analysis of HVOF coatings under Vickers indentation / A. P. Buang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)
[article]
Titre : Cracking analysis of HVOF coatings under Vickers indentation Type de document : texte imprimé Auteurs : A. P. Buang, Auteur ; R. Liu, Auteur ; X. J. Wu, Auteur ; M. X. Yao, Auteur Année de publication : 2008 Article en page(s) : p. 513-534 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eléments finis, Méthode des
Revêtements -- Détérioration
Revêtements -- Fissuration:Peinture -- FissurationTags : 'High Velocity Oxygen Fuel' (HVOF) coating 'Vickers indentation' 'Finite Element Analysis' (FEA) Index. décimale : 667.9 Revêtements et enduits Résumé : The fracture strength of five HVOF coatings, which are made of hard metals, Tribaloy alloy, and superalloys, respectively, coated on 1018 low carbon steel substrate, is studied under Vickers indentation, associated with FEA stress computation. The cross sections of the coating specimens are examined on a Hitachi Model S-570 scanning electron microscope (SEM), which investigates the quality and measures the geometry of the coatings. The mechanical properties of the coatings and the substrate are determined in the cross sections using the nano-indentation technique. The cracking behavior of the coatings under different indentation loads is investigated using a Vickers hardness tester. Three-dimensional finite element analysis (FEA) simulation of the Vickers indentation test is conducted to determine the stress fields in the coating/substrate systems in order to understand the fracture mechanisms of the coatings under the indentation loads using the ABAQUS software package. The FEA stress results are in good agreement with the experimental observation of Vickers indentation. DOI : 10.1007/s11998-008-9106-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9106-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3479
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 4 (12/2008) . - p. 513-534[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010911 - Périodique Bibliothèque principale Documentaires Disponible Response of slot coating flow to gap disturbances : effects of fluid properties, operating conditions, and die configurations / Semi Lee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 5 (09/2015)
[article]
Titre : Response of slot coating flow to gap disturbances : effects of fluid properties, operating conditions, and die configurations Type de document : texte imprimé Auteurs : Semi Lee, Auteur ; Jaewook Nam, Auteur Année de publication : 2015 Article en page(s) : p. 949-958 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Slot coating' 'Frequency response' 'Finite element method' Uniformity 'Gap disturbance' Index. décimale : 667.9 Revêtements et enduits Résumé : Slot coating is perhaps one of the most successful film manufacturing methods and is used to produce a wide variety of products. It is a pre-metered method and ideal for high-precision coating: the steady-state thickness is precisely controlled by the flow rate fed to the die and the web speed. However, the coating method is surrounded by small-scale disturbances that can destroy film thickness uniformity. Among various disturbances, a periodic change of the coating gap, the so-called gap disturbance, is considered the most dangerous in previous studies, e.g., Romero and Carvalho (Chem Eng Sci 63(8):2161–2173, 2008), Tsuda et al. (AIChE J 56(9):2268–2279, 2010), and Lee and Nam (AIChE J, 2015). However, the effects of fluid properties, operating conditions, and die configurations on the slot coating flow under gap disturbances are not examined in detail. In this study, we revisit the computer-aided analysis of transient slot coating flow designed to predict the thickness variations under gap disturbance. Extensive computational predictions reveal important parameters for suppressing film nonuniformity that can be induced by gap disturbance. Note de contenu : - GOVERNING EQUATIONS AND BOUNDARY CONDITIONS
- SOLUTION METHODS
- RESULTS AND DISCUSSION : Effects of fluid properties - Effects of operating conditions - Effect of die configurationsDOI : 10.1007/s11998-015-9684-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9684-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24697
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 5 (09/2015) . - p. 949-958[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17467 - Périodique Bibliothèque principale Documentaires Disponible