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Laser-based dynamic mold temperature control in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 1-2 (01-02/2015)
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inKUNSTSTOFFE INTERNATIONAL > Vol. 105, N° 1-2 (01-02/2015) . - p. 16-20
Titre : Laser-based dynamic mold temperature control : A laser-based system developed at the IKV permits localized heating of mold cavities Type de document : texte imprimé Année de publication : 2015 Article en page(s) : p. 16-20 Langues : Anglais (eng) Catégories : Chauffage laser
Matières plastiques -- Moulage par injection -- Appareils et matériel
Moules d'injection
Température -- ContrôleIndex. décimale : 668.4 Plastiques, vinyles Résumé : Injection molded precision parts must meet the ever-increasing requirements for surface quality, mechanical properties and dimensional accuracy. At the same time, the integration of functions and processes is continuing apace. For particularly high quality requirements, dynamic mold temperature control offers the possibility of reconciling contradictory goals. A laser-based system now makes large-scale energy input unnecessary by focusing on the selective heating of localized mold regions. Note de contenu : - Variotherm and flexible at the same time ?
- High heating rates and safety requirements
- The laser-based heating process
- Highly flexible heating characteristics
- Precise reproduction of microstructuresEn ligne : https://drive.google.com/file/d/1Fg2eOX68A4Qxg5GJFUSKE16Mf98CCtdN/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23279 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16992 - Périodique Bibliothèque principale Documentaires Disponible Laser improves wall thickness distribution / Benjamin Neubig in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 5 (05/2013)
[article]
inKUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 5 (05/2013) . - p. 11-15
Titre : Laser improves wall thickness distribution Type de document : texte imprimé Auteurs : Benjamin Neubig, Auteur ; Christian Bonten, Auteur Année de publication : 2013 Article en page(s) : p. 11-15 Langues : Anglais (eng) Catégories : Chauffage laser
Matières plastiques -- ThermoformageIndex. décimale : 668.4 Plastiques, vinyles Résumé : Thermoforming - Conventional radiant heating systems can only generate temperature profiles with a coarse resolution. The possibility of using a hybrid system with localized laser heating to generate a precisely defined temperature profile for parts with a small area is being investigated. This is aimed at improving the local stretching behavior of the semifinished part during thermoforming and thus the wall thickness distribution of the molded part. Note de contenu : - The prototype thermoformer
- Lasers improve wall thickness distribution
- Outlook : transferable to blow molding ?Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18617 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15093 - Périodique Bibliothèque principale Documentaires Disponible Multi-material-head / Daniel Werner in JEC COMPOSITES MAGAZINE, N° 89 (05/2014)
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inJEC COMPOSITES MAGAZINE > N° 89 (05/2014) . - p. 60-63
Titre : Multi-material-head Type de document : texte imprimé Auteurs : Daniel Werner, Auteur ; Michael Emonts, Auteur ; Christian Brecher, Auteur Année de publication : 2014 Article en page(s) : p. 60-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bandes composites
Chauffage laser
Composites à fibres de verre
Composites thermoplastiques
Fibres à orientation unidirectionnelle
Hors autoclave (technologie)
Matériaux -- Imprégnation
Placement automatisé de fibresIndex. décimale : 620.19 Autres matériaux Résumé : So far, fibre placement systems have been specialized and very expensive. Fraunhofer IPT has developed a versatile placement head especially intended for SMEs that can be used with thermoset and thermoplastic prepregs but also dry fibres thanks to its modular design and software architecture. Note de contenu : - Principle and potential of the thermoplastic tape, thermoset prepreg and dry fibre placement
- A modular tape and fibre placement systemPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21615 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16337 - Périodique Bibliothèque principale Documentaires Disponible Thermoplastic composites technologies for manufacturing nose fuselage structures / P. Lefebure in SAMPE JOURNAL, Vol. 49, N° 5 (09-10/2013)
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inSAMPE JOURNAL > Vol. 49, N° 5 (09-10/2013) . - p. 32-41
Titre : Thermoplastic composites technologies for manufacturing nose fuselage structures Type de document : texte imprimé Auteurs : P. Lefebure, Auteur ; J.-M. Guimard, Auteur Année de publication : 2013 Article en page(s) : p. 32-41 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Avions -- Fuselage
Avions -- Matériaux
Chauffage laser
Composites thermoplastiques
Composites thermoplastiques -- Propriétés mécaniques
Métallisation
Résistance au chocs
SoudageIndex. décimale : 668.4 Plastiques, vinyles Résumé : In the framework of the French national DPAC COMP TP (Thermoplastic) Program, EADS IW has continued its long term efforts on the development of thermoplastic composites technologies for aeronautics structural applications. Most of the research and development activities were focused on the manufacture of "nase" fuselage parts, such as skin panels and stringers and (or) frames, and on the development of TP welding processes. Aircraft windshield front fairings were estimated as good candidates for thermoplastics technologies among all the aeronautic nase fuselage parts. Therefore this paper will discuss the recent developments led by EADS IW, for manufacturing a technological demonstrator, whose main specifications are:
- Thick part (compared to fuselage skins thicknesses) for potential impact resistance properties
- Geometry with severe double curvatures
- Use of cost-effective manufacturing processes
These specifications led to a development program that encompassed the following activities:
- Determination and validation of process limits for TP parts consolidation in aven.
- Automated lay down technique for TP multi-tows deposition with a laser heating system.
- Panel metallization, for LSP application, with a laser TP tape deposition machine.
- Press-forming process for manufacture of thick and double curvature stiffeners.
- Specific welding process and understanding the mixing of different high performance thermoplastic materials.
A specific design of a representative Thermoplastic CFRC Panel has been created and the associated technological demonstrator is manufactured for validation of the different related development works. Mechanical performance, detailed structural sizing and actual impact resistance of such a component will be addressed at a later date in another development program.Note de contenu : - AUTOMATED TP FIBRE PLACEMENT PROCESS WITH LASER HEATING SYSTEM
- HARMFUL IMPACT OF THE POROSITY IN THERMOPLASTIC COMPOSITE PARTS
- CONSOLIDATION OF PROUS LAMINATES
- MECHANICAL TESTS : FHC (Filled Hole Compression) tests - After impact compression tests
- METALLIZATION OF LARGE CURVED TP CFRC PANELS
- INFLUENCE OF AN AUTOMATED DEPOSITION PROCESS ON LIGHTNING STRIKE BEHAVIOUR
- TECHNOLOGY ADAPTATION TO A MULTI-TOW PLACEMENT MACHINE WITH LASER HEATING SYSTEM
- EADS IW TECHNOLOGICAL DEMONSTRATOR :Part design - Skin manufacture - Frames manufacture - Skin-frames welding feasibilityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19270 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15385 - Périodique Bibliothèque principale Documentaires Disponible