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Delamination of coating from a ship's hull / Cheryl Roberts in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 6 (06/2018)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 6 (06/2018) . - p. 9-12 Titre : Delamination of coating from a ship's hull Type de document : texte imprimé Auteurs : Cheryl Roberts, Auteur Année de publication : 2018 Article en page(s) : p. 9-12 Langues : Anglais (eng) Catégories : Analyse des défaillances (fiabilité) Bateaux -- Revêtements:Bateaux -- Peinture Chimie analytique Coques (architecture navale) Délaminage Revêtements protecteurs -- Détérioration Index. décimale : 667.9 Revêtements et enduits Résumé : Unlike many industrial strucures, ships often contain a variety of multi-layer coating systems on a single vessel, and even on the exterior hull itself, often including a complex sequence of anticorrosive layers followed by antifouling layers. This article focuses on the recoating of ship's exterior hull that resulted in catastrophic failure before the ship was ever returned to service. Note de contenu : - THE BACKGROUND - FIELD INVESTIGATION - LABORATORY INVESTIGATION : Microscopic Examination - Solvent Rub Test - Nitrogen Analysis : Mix Ratio - Recoat Interval Study - Tackiness/Tack-Free Test - Batch Composition Testing - Amine Exudate Analysis Fig. 1 : An illustration of the hull of the ship with the deep-load line (DDL), light-load line (LLL) and specifications for the coating systems applied. Fig. 2 : Lower, middle and upper sampling sites. The black area is the boot top Fig. 3 : Cross section of a paint chip obtained from within 1^(-1/2) feet above the DLL showing the extra red layer sandwiched between the gray layers at 200-times magnification Fig. 4 : Variations of adhesion with length of time between application of red AF and gray AC coating Tab. 1 : Results of Tack-Free Study Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31583 [article]

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Time and temperature : don't forget about humidity / Troy E. Fraebel in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 6 (06/2018)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 6 (06/2018) . - p. 13-15 Titre : Time and temperature : don't forget about humidity Type de document : texte imprimé Auteurs : Troy E. Fraebel, Auteur Année de publication : 2018 Article en page(s) : p. 13-15 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Air -- Humidité Durée de vie en pot Revêtement en plastique -- Effets du climat Revêtements -- Effets de la température:Peinture -- Effets de la température Index. décimale : 667.9 Revêtements et enduits Résumé : Most conversations about cure times naturally default to standard laboratory condictions of 77 F and 50-precent relative humidity (RH). However, this is seldom the case in the field. Variations in recoat windows, sweat-in or induction times and pot life due to material storage and mixing temperatures are often forgotten. Combine high humidity with low temperatures or low humidity with moisture-cured products and disasters can happen. Ever-changing weather condictions are the reason it's critical that the applicable product data sheet(s) be on the jobsite and a completent sales representative and/or technical service person be readily available. Note de contenu : - Final cure - Recoat window - Pot life - Induction time - Humidity and temperature Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31584 [article]

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Selecting coatings for offshore wind farms / Andres Voldsgaard Clausen in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 6 (06/2018)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 6 (06/2018) . - p. 17-20 Titre : Selecting coatings for offshore wind farms Type de document : texte imprimé Auteurs : Andres Voldsgaard Clausen, Auteur Année de publication : 2018 Article en page(s) : p. 17-20 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eoliennes -- Revêtements protecteurs Essais de brouillard salin Essais de résilience Evaluation Structures offshore -- Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : In 2017, 4,331 megawatts (MW) of wind power was installed globally - a 95-percent increase over the prior year, with 84 percent (15,780 MW) of all offshore facilities located off the coasts of 11 European countries and 16 percent mostly off the coast of China with the remainder in other Asian countries. According to the U.S. Office of Energy Efficiency and Renewable Energy, the U.S. has 28 projects in progress and development totaling 23,735 MW of power. Those in the near term are primarily concentrated in the North Atlantic with others in various stages of evolution in the Great Lakes, the West Coast and Hawaii. In Europe, 17 new wind farms were constructed in 2017, including 560 new offshore wind turbines, producing a record 3,150 MW of additional capacity. This positive growth in the European offshore sector has been driven by falling costs alongside advancements and innovation in cost-out measures (calculating total cost in advance) achieved through a greater understanding of the key risks in off-shore wind tower construction, with larger projects leading to greater economies of scale and an oversupply in the wind turbine market. Offshore wind energy is projected to become Europe's fastest growing renewable source. The rise in offshore wind energy has spurred a similar growth in related protective coatings. Although the offshore wind industry is known to be generally conservative, its search for cost savings has encouraged coatings manufacturers to research and develop new and innovative materials that can be applied more quickly, and that offer optimal protection. Note de contenu : - Above- and below-waterline coatings - Innovative technology - Beyong science : efficiency gains Fig. 1 : Coating comparaison after salt-spray testing. Fig. 2 : Coating comparaison after cyclic corrosion testing Fig. 3 : Results of the NACE craking test (TM0304-2004, "Offshore Platform Atmospheric and Splash Zone Maintenance Coating System Evaluation") and an in-house welding test Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31585 [article]

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Journal of Protective Coatings and Linings Vol. 35, N° 6 URL