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AP-PLY : A new fibre placement architecture for fabric replacement / Martin Nagelsmit in SAMPE JOURNAL, Vol. 47, N° 2 (03-04/2011)
[article]
Titre : AP-PLY : A new fibre placement architecture for fabric replacement Type de document : texte imprimé Auteurs : Martin Nagelsmit, Auteur ; C. Kassapoglou, Auteur ; Z. Gürdal, Auteur Année de publication : 2011 Article en page(s) : p. 36-43 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres
Composites à fibres -- Détérioration
Composites thermoplastiques
Délaminage
Essais accélérés (technologie)
Essais de résilience
Essais dynamiques
Indentation des matériaux
Résistance des matériaux
Stratifiés
Thermodurcissables
TissésIndex. décimale : 668.4 Plastiques, vinyles Résumé : Composite laminates made with woven fabric are known to have damage resistance characteristics than unidirectional laminates. Due to the recent development in fibre placement and tape laying machines, laminates with unidirectional plies are favoured because of the automated production process. AP-PLY combines the advantages of fabrics and unidirectional layers in an automated production process. AP-PLY is a laminate configuration obtained by placing the fibre tows in special patterns that mimic the construction of w woven layer. Any material system can be used for the construction, including glass fibre, carbon fibre, thermoset and thermoplastic resins and even dry fibre placement. No adaptations to current fibre placement machines are necessary. Tests show smaller delaminations and higher residual strength for every tested. Possible applications include any number of the plies of wing and fuselage laminates or sandwich panel facesheets. It is also possible that entire laminate structures where the design is driven by damage tolerance can be constructed by AP-PLY. In addition, the prospect of eliminating or minimizing the use of fabric plies, which is a labour intensive process and replacing them with equivalent AP-PLY configurations, makes the present concept attractive for other applications where impact damagemay not be the driver. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12726
in SAMPE JOURNAL > Vol. 47, N° 2 (03-04/2011) . - p. 36-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012893 - Périodique Bibliothèque principale Documentaires Disponible Artificial versus natural weathering tests / Flavio Deflorian in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2012)
[article]
Titre : Artificial versus natural weathering tests : Making sense of the comparison Type de document : texte imprimé Auteurs : Flavio Deflorian, Auteur ; Michele Fedel, Auteur ; Stefano Rossi, Auteur Année de publication : 2012 Article en page(s) : p. 18-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Essais accélérés (technologie)
Métaux -- Revêtements protecteurs
Revêtements -- Détérioration
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Testing and measuring - The protective properties of organic coated galvanised steel for outdoor applications are generally evaluated by means of accelerted laboratory tests, including electro-chemical techniques. How can these accelerated tests be correlated with natural exposure in different environments ? Note de contenu : - Natural ageing
- One year of ageing
- Decrease in impedancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16044
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10/2012) . - p. 18-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14206 - Périodique Bibliothèque principale Documentaires Disponible Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints / Matthew S. Gebhard in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 1 (01/2006)
[article]
Titre : Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints Type de document : texte imprimé Auteurs : Matthew S. Gebhard, Auteur ; Michael B. Clark, Auteur ; Kenneth. F. Willey, Auteur ; Robert F. Antrim, Auteur ; Francis V. Acholla, Auteur ; John B. Newman, Auteur ; Kristin Weidemaier, Auteur Année de publication : 2006 Article en page(s) : p. 15-27 Note générale : bibliogr. Langues : Américain (ame) Catégories : Colloides
Durée de vie (Ingénierie)
Essais accélérés (technologie)
Formulation (Génie chimique)
Latex
Polyacryliques
Revêtements -- Analyse:Peinture -- Analyse
Revêtements décoratifs:Peinture décorative
Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration
Revêtements en phase aqueuse:Peinture en phase aqueuse
Revêtements organiquesIndex. décimale : 667.6 Peintures Résumé : Gloss retention of waterborne acrylic architectural paints is one of many properties defining exterior durability. Assessing gloss retention is a time consuming process, and accelerated weathering protocols (Weather-Ometer®) typically have poor correlation with natural exposures for this class of paints. The recent development of new analytical techniques for assessing automotive paint durability raises the possibility of detecting subtle changes in short-term natural exposures that would be predictive of long-term gloss retention; however, extension to architectural paints has yet to be demonstrated. To test the concept, seven paints based on different aqueous emulsion polymers were exposed to natural weathering at the same time for 12 weeks at the Paint Quality Institute (PQI) test site, and were then examined using scanning probe microscopy, optical profilometry, chemiluminescence, XPS, and FTIR. These paints were also exposed for 1000 hr in a Weather-Ometer (WOM). Scanning probe microscopy, optical profilometry, chemiluminescence, FTIR, and the WOM results all showed poor correlation with 96-week natural exposure at the PQI test site. The lack of correlation for the WOM results emphasizes the crucial importance of using natural weathering to assess gloss retention. In contrast, the XPS shows some promise for qualitatively predicting subsequent gloss loss and appears worthy of further exploration. As employed here, the XPS was used to monitor the ratio of pigment (Al, Si, and Ti) to carbon coming from the TiO2 in the top few nanometers of the paint surface. A correlation (R2 = 0.731) was found between gloss retention after 96 weeks and the change (2 versus 12 weeks of exposure) in pigment to carbon ratio. This correlation is probably sufficient to rank a series of paints and allow for an assessment against well-established controls. While promising, XPS has some issues. Surface contamination, equipment expense, the considerable expertise required, and precision make utility for screening less than ideal. Note de contenu : - GLOSS RETENTION
- ALTERNATIVE APPROACH TO PREDICTING GLOSS RETENTION
- APPROPRIATE ANALYTICAL METHODS FOR ASSESSING COATING DEGRADATION : Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectroscopy - X-ray photoelectron spectroscopy
- ASSESSMENT PROTOCOL
- EXPERIMENTAL DETAILS : Paint formulations
- Gloss measurements - Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectra - X-ray photoelectron spectroscopy
- RESULTS AND DISCUSSION : Gloss - Weather-ometer - Surface topography - Chemiluminescence - PAS - XPS
- Table 1 : Paint formulatio used to prepara paints using the seven emulsion polymers
- Table 2 : Initial 60° gloss values for the paints based on the seven latex emulsion polymers
- Table 3 : PAS-FTIR parametersPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3709
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 1 (01/2006) . - p. 15-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003762 - Périodique Bibliothèque principale Documentaires Disponible ASTM accelerated dirt pickup resistance method with correlation to natural outsdoor weathering / Keith Alderfer in COATINGS TECH, Vol. 19, N° 6 (07/2022)
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Titre : ASTM accelerated dirt pickup resistance method with correlation to natural outsdoor weathering Type de document : texte imprimé Auteurs : Keith Alderfer, Auteur ; James Maher, Auteur ; Partha Majumdar, Auteur ; Jeff Sweeney, Auteur Année de publication : 2022 Article en page(s) : p. 38-47 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais accélérés (technologie)
Peinture -- Normalisation
Résistance à la salissure
Résistance aux conditions climatiques
Revêtements en bâtiment:Peinture en bâtimentIndex. décimale : 667.9 Revêtements et enduits Résumé : The Architectural Subcommittee of ASTM’s Paint and Related Coatings, Materials and Applications Committee (D01.42), in collaboration with industrial partners, investigated an accelerated laboratory method to assess the exterior dirt pickup resistance of architectural coatings.
A concurrent exterior exposure study was conducted with seven commercial paints across seven locations with varied climates throughout the United States for 36 months. The accelerated laboratory method explored multiple variables including dry time of the coating and QUV exposure time.
For the exterior study, to understand the impact of multiple variables and their interactions on final response, a robust statistical methodology was applied utilizing both a mixed model with fixed and random effects to account for repeated measure analysis and a standard least square linear regression. Finally, the results from the two methods, laboratory and exterior, were compared to understand the similarity of the overall trends.Note de contenu : - EXPERIMENTAL : Materials
- TEST PROCEDURES : Accelerated lab DPUR method - Natural weathering of paints for assessment of DPUR
- RESULTS AND DISCUSSION : Results of accelerated DPUR single lab study - Results and analysis of exterior weathering DPUR study
- Data analysis/modeling
- CORRELATION OF PROPOSED ACCELERATED METHOD WITH EXTERIOR EXPOSURE : Mixed model approach for RMA
- Table 1 : Description of paints used in the study
- Table 2 : Results of accelerated lab DPUR method by paint ID, sheen category, and quality categoryEn ligne : https://drive.google.com/file/d/1o34aGmHLfPF0iufRg-pHqlLFbpKgxIbr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38225
in COATINGS TECH > Vol. 19, N° 6 (07/2022) . - p. 38-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23651 - Périodique Bibliothèque principale Documentaires Disponible ASTM standard is a revolution in weathering testing / Sean Fowler in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4588 (09/2013)
[article]
Titre : ASTM standard is a revolution in weathering testing Type de document : texte imprimé Auteurs : Sean Fowler, Auteur Année de publication : 2013 Article en page(s) : p. 16-17 Langues : Anglais (eng) Catégories : Certification
Essais accélérés (technologie)
Matériaux -- Détérioration
Revêtements -- Détérioration
Revêtements -- Effets du climatIndex. décimale : 667.9 Revêtements et enduits Résumé : A new and potentially revolutionary weathering standard has been published by ASTM International. Titled 'Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings', ASTM D7869 is the result of a decade of research by a consortium of leaders in the automotive, aerospace, coatings and weathering testing industries. The new standard was written by subcommittee D01.27 on accelerated testing of paints and coatings. Douglas Grossman, Subcommittee Chairperson and President of Q-Lab Corporation, calls ASTM D7869, "The most thoroughly researched weathering test procedure ever developed:' What makes this new standard so special ? Note de contenu : - Historical background
- Research part 1 : improving the light spectrum
- Research part 2 : Importance of moisture
- Research part 3 : developing the new cycle
- New performance criteria for xenon arc test chambers
- State-of-the-art i weathering testingEn ligne : https://drive.google.com/file/d/1qN7ykRYfLcn5VcBsPa0jV8Tj5sgKUi5g/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19313
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 203, N° 4588 (09/2013) . - p. 16-17[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15497 - Périodique Bibliothèque principale Documentaires Disponible Automotive clear coating : A comprehensive look at substrates, testing standards and features / Mukesh Kumar Madhup in PAINTINDIA, Vol. LXXXIII, N° 11 (11/2023)
PermalinkBest practices in weathering / Michael J. Crewdson in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2009 (04/2009)
PermalinkBoreal forest conifer extracts : potential natural additives for acrylic polyurethane coatings for the protection of heat-treated jack pine / Sudeshna Saha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 1 (01/2013)
PermalinkBringing outside coatings inside limits / Massimo Longoni in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2017)
PermalinkChallenge-test cosmétique / Christian Lepage in EXPRESSION COSMETIQUE, N° 49 (01-02/2018)
PermalinkLes chaussures pour enfant : résultats des essais / Laurence Clément in CTC ENTREPRISES, Vol. 19, N° 9 (11/2003)
PermalinkChemical origins of paint performance / Ray A. Dickie in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 834 (07/1994)
PermalinkChoosing an outdoor durable powder coating / Kevin M. Biller in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)
PermalinkPermalinkPermalinkPermalinkCoating performance on different types of modified wood : natural and artificial weathering results / Laurence Podgorski in SURFACE COATINGS INTERNATIONAL, Vol. 94, 4 (08/2011)
PermalinkCoatings weatherability - choosing the right tests / Allen Zielnik in SURFACE COATINGS INTERNATIONAL, Vol. 94, 4 (08/2011)
PermalinkColour stability of wood coatings pigmented with natural indigo from Isatis tinctoria after accelerated weathering / Juha Jordan in COLORATION TECHNOLOGY, Vol. 138, N° 2 (04/2022)
PermalinkCombined corrosion/weathering : validating a concept with over a decade of research / P. Brennan in SURFACE COATINGS INTERNATIONAL, Vol. 94, 1 (02/2011)
PermalinkComparative studies of acrylic paints / Roland Baumstark in SURFACE COATINGS INTERNATIONAL. PART A : COATINGS JOURNAL, Vol 87, A05 (06/2004)
PermalinkComparison of weathering variables on chrome-tanned and wet-white leather ageing / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 1 (01-02/2012)
PermalinkConcrete benefits from new nanoparticles / Antonio Esteban-Cubillo in EUROPEAN COATINGS JOURNAL (ECJ), N° 11 (11/2013)
PermalinkConcurrent physical aging and degradation of crosslinked coating systems in accelerated weathering / Shi Xiaodong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 3 (09/2008)
PermalinkConsiderations for characterizing moisture effects in coatings weathering studies / Henry K. Hardcastle in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)
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