Bivariate approach to viscosity adjustment / Michael J. Eiseman in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 67, N° 840 (01/1995)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 67, N° 840 (01/1995) . - p. 47-51 Titre : Bivariate approach to viscosity adjustment Type de document : texte imprimé Auteurs : Michael J. Eiseman, Auteur Année de publication : 1995 Article en page(s) : p. 47-51 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cinématique Haut extrait sec Modèles mathématiques Plan d'expérience Revêtements:Peinture Rhéologie Statistique Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : This article outlines a method to produce temperature-corrected solvent reduction charts to enable high-solids coating manufacturers and users to simply, quickly, and accurately adjust the viscosity of a coating before application. The method allows accurate control of viscosity without requiring the operator to bring a sample to a standard temperature. Generation of the charts requires minimal and easily obtained data. A bivariate strategy is the key to this method. Modeling the kinematic viscosity of the coating, V2, using an empirical equation (8) enables simultaneous prediction of the effects of temperature, T, and weight fraction solvent reduction, r. Since equation (8) is linear with respect to the fitting parameters, simple multiple linear regression yields parameters, simple multiple linear regression yields parameter estimates. One typically achieves correlations with R2 values of 0.99 Note de contenu : - Materials - Kinematic viscosity determination,n - Experimental Design - Statistical analyses of data Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18489 [article]

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New kinematics for increased efficiency and availability / Gerhard Dimmler in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 3 (2020)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 3 (2020) . - p. 35-37 Titre : New kinematics for increased efficiency and availability : The pic A is the first pneumatic sprue picker to operate with a swivel arm Type de document : texte imprimé Auteurs : Gerhard Dimmler, Auteur ; Robert Dutzler, Auteur ; Wolfgang Höglinger, Auteur ; Deborah Lidauer, Auteur Année de publication : 2020 Article en page(s) : p. 35-37 Langues : Anglais (eng) Catégories : Automatisation Cinématique Matières plastiques -- Moulage par injection -- Appareils et matériel Robots industriels Tags : 'Ramasseur  de  carottes  pneumatiques" Index. décimale : 668.4 Plastiques, vinyles Résumé : Besides custom-made automation solutions, there is also increasing global demand for standardized robots. In many automation projects, they help to achieve a combination of high performance and high cost-efficiency. With the new pic A pneumatic sprue picker, the market now has a flexible, compact solution for separating sprues, and easy removal of small injection-molded parts. Note de contenu : - Movements in confined spaces - Robust mechanical systems - Standardized operating logic across the entire cell - Extra reliability - Figure : The development process extends from the predecessor model ER-USP via multiple concept studies to the swivel-arm design of the current pic A - Fig. 1 : The swivel arm replaces the fixed X-axis - Fig. 2 : In the park position, the swivel arm is completely folded in. In this way, the pic A does not need to be demounted for setting up the injection molding machine - Fig. 3 : The triangular kinematics converts the vertical drive movement into a horizontal linear demolding movement - Fig. 4 : To eject the sprues, the axis turns to the side through 90°C - Fig. 5 : The discharge chute for deposition of the sprues is very compactly integrated into the injection molding machines En ligne : https://drive.google.com/file/d/1FzPsxlfz0YacWC-mdmmO33GXeco_bE0X/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34073 [article]

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Optimizing the key manufacturing parameters of the AFP process / Lei Shi in JEC COMPOSITES MAGAZINE, N° 122 (07/2018)  

[article]  inJEC COMPOSITES MAGAZINE > N° 122 (07/2018) . - p. 63-65 Titre : Optimizing the key manufacturing parameters of the AFP process Type de document : texte imprimé Auteurs : Lei Shi, Auteur Année de publication : 2018 Article en page(s) : p. 63-65 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cinématique Logiciels Placement automatisé de fibres Simulation par ordinateur Index. décimale : 668.4 Plastiques, vinyles Résumé : Most users of Automated Fibre Placement (AFP) equipment use the software provided by the machine vendor, which is simply not economical or realistic for manufacturers. This paper presents a universal AFP software program (Autodesk TruFiber) that allows manufacturers to select the best machine for the job. Additionally, case studies are used to expound the optimization of the kinematics parameters of the AFP process. Note de contenu : - Operation strategy - Process zone - Interference detection - Fig. 1 : Tool path results computed with three types of layup direction strategies on the same circle-diamond-square part : a) unidirectional layup, b) bidirectional layup and c) bidirectional with "Maximum unidirectional length" - Fig. 2 : Comparison of tool path computed results for a) "Automatically break courses" disabled and b) "Automatically break courses" enabled - Fig. 3 : Process zone defined on the ramp surface of an engine cover part - Fig. 4 : User interface of the proccess zone command in Autodesk TruFiber 2018 - Fig. 5 : a) The AFP head interferes with the substrate and b) collisions disappear after tilting the head - Fig. 6 : Comparison between tool path computations a) without additional buffer distance, and b) with additional buffer distance En ligne : https://drive.google.com/file/d/10JmUrOWBxiWwk4PJkYTAvjLCDB8hPsrt/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31633 [article]

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Rheological modeling of polymeric melts in extruders upon two-dimensional shear flow / H. Hosseini in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 1 (03/2016) . - p. 51-56 Titre : Rheological modeling of polymeric melts in extruders upon two-dimensional shear flow Type de document : texte imprimé Auteurs : H. Hosseini, Auteur ; V. Aseyev, Auteur ; B. V. Berdyshev, Auteur ; A. A. Borisov, Auteur Année de publication : 2016 Article en page(s) : p. 51-56 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cinématique Cisaillement (mécanique) Etat fondu (matériaux) Matières plastiques -- Extrusion:Polymères -- Extrusion Rhéologie Index. décimale : 668.4 Plastiques, vinyles Résumé : The rheological modeling of a polymer melt in the course of its extrusion through a circular cylindrical channel inside a shaping die equipped with a rotating mandrel and a rotating or stationary nozzle is investigated. This paper attempts to provide a detailed rheological description of the physical processes of a polymer melt based on Leonov model inside the channel of an extruder under its kinematic deformation upon two-dimensional shear flow. Based on the obtained rheological equations of state, the flow process can be described in a form of dependencies reflecting kinematics of complex polymer deformation in the die channel. These expressions allow estimation of the velocity distribution for the flow elements within the channel as well as of the flow-pressure characteristics of the process. A quantitative relation between flow characteristics, rheological properties of polymer, and technical parameters of the channel of an extruder was determined. Comparison of this theoretical model with experimental results validates the suggested model. DOI : 10.3139/217.3131 En ligne : https://drive.google.com/file/d/1S5rfU8v8kMOVLcZybv_Netlt9U1V1ojR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25768 [article]

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En route to greater efficiency / Stefan Schaal in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 13, N° 1 (2020)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 13, N° 1 (2020) . - p. 44-47 Titre : En route to greater efficiency Type de document : texte imprimé Auteurs : Stefan Schaal, Auteur Année de publication : 2020 Article en page(s) : p. 44-47 Langues : Anglais (eng) Catégories : Cinématique Nettoyage industriel -- Appareils et matériels Pièces usinées -- Nettoyage Simulation par ordinateur Index. décimale : 667.1 Nettoyage Résumé : Dramatic changes are taking place in the world of production. In addition to managing digitisation issues, manufacturers also need to improve their resource efficiency and flexibility while increasingproductivity and product quality. New concepts are required in order for manfuacturing companies to remain competitive and that applies to all areas of their businesses, including parts cleaning. Note de contenu : - Exposure - potential for improvement - Vector kinematics system increases efficiency - Comprehensive tests confirm the simulation results - Important for manufacturing - Fig. 1 : The new vector kinematics system allows parts to be exposed to the cleaning agent from different angles - Fig. 2 : Workpieces with complex shapes, including drilled holes and undercuts, benefit particularly from the targeted turbulence of the vector kinematics system - Fig. 3 : In cleaning processes with fixed nozzle systems, the unexposed areas of the parts are larger thant those which are perfectly cleaned - Fig. 4 : The angle variance of the vector kinematics system leads to the parts being much more fully exposed to the cleaning agent. The perfectly and partially exposed areas are much larger than the areas not reached - Fig. 5 : Residual contamination on a part cleaned using a process with a fixed nozzle system - Fig. 6 : Almost entirely particle-free : the surface of a component cleaned using vector kinematics - Using vector kinematics, the particulate contamination was three to five times lower, depending on the particle size in specific classes Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35084 [article]

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Viscosité d'un fluide / DEPEGEC (I.U.T. - Le Montet; Villers les Nancy cedex) / Villers les Nancy cedex : DEPEGEC (n.d.)

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Viscosity conversion chart yogi - YRS - A / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 7 (07/2014)  

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