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Advanced radiachromic radiometry for UV curing processes / R. W. Stowe in COATINGS TECH, Vol. 6, N° 7 (07-08/2009)
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inCOATINGS TECH > Vol. 6, N° 7 (07-08/2009) . - p. 20-24
Titre : Advanced radiachromic radiometry for UV curing processes Type de document : texte imprimé Auteurs : R. W. Stowe, Auteur ; J. W. Guarniere, Auteur Année de publication : 2009 Article en page(s) : p. 20-24 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Radiométrie
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : An advanced study of the use of instrument-resolved radiachromic radiometry to solve some of the difficulties presented by traditional radiometry in 3-D processing, roll-to-roll printing and coating, and ink jet printing. Elements of responsivity, dynamic range, and adaptability of various types of films are discussed. Commercially available films and experimental films are studied. Methods of correlation to produce a numerical measure of UV exposure are presented. These methods can be applied easily to laboratory characterization of materials and to production quality control. The principal purpose is to explore the use of standard instruments to quantify the response of radiachromic films in terms of transmission or reflection densitometry. This allows correlation of their optical density to instrument radiometry for (1) process design optimization and/or (2) periodic measurements to verify lamp condition over time. The most important conclusion is that, when carefully designed and used, radiachromic films can be a useful extension of – but not a substitute for – instrument radiometry. En ligne : https://drive.google.com/file/d/1CT7KhX4k0xvyMc8-07GjVh1RHr5ljyvD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6109 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011514 - Périodique Bibliothèque principale Documentaires Disponible Aspects of radiometry and process verification for 3-D UV processing / R. W. Stowe in COATINGS TECH, Vol. 2, N° 12 (01/2005)
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inCOATINGS TECH > Vol. 2, N° 12 (01/2005) . - p. 30-35
Titre : Aspects of radiometry and process verification for 3-D UV processing Type de document : texte imprimé Auteurs : R. W. Stowe, Auteur Année de publication : 2005 Article en page(s) : p. 30-35 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : As larger and more complex objects become candidates for UV-curable coatings, the challenges of exposing curable surfaces to adequate UV energy become greater. It is desirable to position UV lamps for the most effective exposure, and the least wasted energy. Because complex parts differ from one another, and paint line organization varies, lamp configurations unique to each line or part type may be necessary. Techniques of radiometric verification of UV exposure to all complex curable surface areas are explored, including radiachromic films. En ligne : https://drive.google.com/file/d/1QVFRto2LvW2RrqiXGZZV5NscZdaeJEke/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5531 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000583 - Périodique Bibliothèque principale Documentaires Disponible Aspects of radiometry and UV exposure verification for UV curing of complex surfaces nd 3-D objects / R. W. Stowe in COATINGS TECH, Vol. 4, N° 4 (04/2007)
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inCOATINGS TECH > Vol. 4, N° 4 (04/2007) . - p. 32-39
Titre : Aspects of radiometry and UV exposure verification for UV curing of complex surfaces nd 3-D objects Type de document : texte imprimé Auteurs : R. W. Stowe, Auteur Année de publication : 2007 Article en page(s) : p. 32-39 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : Traditional UV radiometry typically uses instruments that are very adaptable to conveyors and discrete-part transport systems through curing systems. Special difficulties in making online measurements are encountered in multipoint 3-D systems and in web, or roll-to-roll systems. As larger and more complex objects are candidates for UV-curable coatings, the challenges of exeposing curable surfaces to adequate UV energy become greater and 3-D processing present some new and different problems for radiometry. For optimized lamp positioning and process venfication, this could require irradiance and energy measurements at almost every point on the surface. Web systems present a completely different problem for in-line radiometry. Although lamps can be monitored with static methods, it is difficult to measure the actual process exposure of a web surface. Electronic instruments will simply not pass through most web systems without risk to the instrument or the machine. For both of these processes, alternative methods of radiometric verification of UV exposure and process radiometry are explored. This study concentrates on some of the key features and responses of radiachromic films with emphasis on their adaptability to complex surface (3-D) curing systems. The principle purpose is to explore the use of instruments to quantify the response of radiachromic films in terms of transmission or reflection densitometry, and correlate them to instrument radiometry. En ligne : https://drive.google.com/file/d/1yG2jwoqCdpsnx2EPDw6UvGC7s0NAutSN/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3595 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007167 - Périodique Bibliothèque principale Documentaires Disponible