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Approach to optimizing a combined out-of-autoclave (OOA) prepreg/liquid composite molding (LCM) process for integrated structures / Claudio di Fratta in SAMPE JOURNAL, Vol. 48, N° 5 (09-10/2012)
[article]
inSAMPE JOURNAL > Vol. 48, N° 5 (09-10/2012) . - p. 40-46
Titre : Approach to optimizing a combined out-of-autoclave (OOA) prepreg/liquid composite molding (LCM) process for integrated structures Type de document : texte imprimé Auteurs : Claudio di Fratta, Auteur ; Mario Danzi, Auteur ; Veit Gabathuler, Auteur ; Markus Zogg, Auteur ; Paulo Ermanni, Auteur Année de publication : 2012 Article en page(s) : p. 40-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites thermoplastiques -- Moulage par infusion
Composites thermoplastiques -- Moulage par injection
Hors autoclave (technologie)
Matériaux -- Imprégnation
Moulage par transfert de résine sous vide
Séchage
StratifiésIndex. décimale : 620.1 Mécanique de l'ingénieur (mécanique appliquée) et matériaux Résumé : Hybrid processes combining characteristics of prepreg and resin infusion/injection techniques are interesting and advantageous solutions for manufacturing of highly integrated structures. The possibility, given by traditional prepreg technology, to manufacture with a good reproducibility parts having elevated mechanical performances and as well to introduce additives like flame retardants or tougheners, can be successfully combined with liquid composite molding (LCM) characteristics. This work aimed to investigate these combined processes. The present research involved furthermore out-of-autoclave (OOA) prepreg, which provide additional cost-savings and environmental advantages compared with standard autoclave techniques: OOA prepreg plies and dry fabrics are laid up together in a mold and then resin is injected (RTM-like) or infused (VARI-like) in the cavity. When the impregnation is completed the part can be cured in oven. Goal of the investigation is to analyze the performances of hybrid laminates, in respect to pure OOA prepreg- and LCM-parts and to optimize the manufacturing route, assessing the process robustness through several tests. Simple demonstrators have been also realized to prove the hybrid technique feasibility and effectiveness. Note de contenu : - MATERIALS AND PROCESS DESCRIPTION : Materials and process description - Hybrid OOA prepreg/LCM process description
- TESTS RESULTS AND DISCUSSION : Feasibility analysis and comparison with pure procesing - Sensitivity studyPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16079 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14093 - Périodique Bibliothèque principale Documentaires Disponible A bike frame from an injection molding machine / Tim Hacken in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 6 (2020)
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inKUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 6 (2020) . - p. 25-27
Titre : A bike frame from an injection molding machine : Controlling complex development and manufacturing process, using simulation Type de document : texte imprimé Auteurs : Tim Hacken, Auteur ; Daniel Maier, Auteur Année de publication : 2020 Article en page(s) : p. 25-27 Langues : Anglais (eng) Catégories : Cadre de vélo
Composites thermoplastiques -- Moulage par injection
Procédés de fabrication
Simulation par ordinateur
Véhicules électriquesIndex. décimale : 668.4 Plastiques, vinyles Résumé : The toolmaker Siebenwurst uses injection molding simulation to optimize part design and production processes in its routine workflows. Among other things, Simcon’s software ensures the quality and dimensional ‧accuracy of the plastic frame for the first series-produced injection molded e-bike Note de contenu : - Two halves of a shell, glued together
- Simulation reveals distortion problems and gap formation
- Entire production process in focus
- Component changes during the design phase of the tool
- Evaluate feasibility and profitability
- Fig. 1 : In the dimensionally stable hollow structure of the frame made of a thermolastic fiber-plastic composite, the battery, cable and motor can be integrated into a novel, flat design
- Fig. 2 : Shrinkage and warpage during injection molding were calculated by simulation and the position and well thickness of reinforcing struts inside the frame were improved
- Simulation of the cascade injection molding process : Fillinglevel(30%) just before opening the second stage ; filling level (73%) just before opening the third stage, filling level (98%) when siwitching overEn ligne : https://drive.google.com/file/d/17tsb2pRsSyOyfwdIVUFsvP7lgFGdHt07/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34712 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21871 - Périodique Bibliothèque principale Documentaires Disponible
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inPLASTICS INSIGHTS > Vol. 114, N° 1-2024 (2024) . - p. 56-59
Titre : Developed for series production : New technology for lightweight construction with sandwich structures Type de document : texte imprimé Auteurs : Ralf Schlimper, Auteur ; Matthias Zscheyge, Auteur ; Thomas Glässer, Auteur ; Maik Feldmann, Auteur Année de publication : 2024 Article en page(s) : p. 56-59 Langues : Anglais (eng) Catégories : Composites -- Thermoformage
Composites thermoplastiques -- Moulage par injection
Construction sandwich
Matériaux -- Allègement
Structure en nid d'abeillesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Sandwich composites with continuous fiber-reinforced plastic face sheets offer optimum lightweight performance and associated material efficiency in the implementation of large-area structural components. The TS molding technology is based on a novel thermoforming process and was specifically developed for the fully automated production of continuous fiber-reinforced sandwich components with thermoplastic matrix in large series. Note de contenu : - Lightweight structures in large-scale production
- Transfer to industrial practice
- Collapse at too high temperatures
- Prediction of the structural behavior
- Fig. 1 : Process engineering implementation of thermoplstic sandwich molding
- Fig. 2 : Process diagram thermoplastic sandwich molding
- Fig. 3 : Component demonstrators : 3D molded sandwich structure with injection-molded component edge, sawed component and variation of the face sheet material (black components)
- Fig. 4 : Section through the 3D molded sandwich structure with honeycomb core ; process simulation model of the sandwich structureEn ligne : https://drive.google.com/file/d/1tLHdAEJtdWXJxmlOrlm_HQcwiDWbWvNU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40810 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24500 - Périodique Bibliothèque principale Documentaires Disponible Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends / Tetsuto Kajiyama in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 4 (08/2018)
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inINTERNATIONAL POLYMER PROCESSING > Vol. XXXIII, N° 4 (08/2018) . - p. 564-573
Titre : Effect of addition of styrene-ethylene/butylene-styrene and the type of mica on the mechanical properties of mica-filled polyethylene/polypropylene blends Type de document : texte imprimé Auteurs : Tetsuto Kajiyama, Auteur ; T. Yasuda, Auteur ; T. Yamanaka ; K. Shimizu ; T. Shimizu ; E. Takahashi ; A. Ujiie ; K. Yamamoto ; T. Koike ; Y. Nishitani Année de publication : 2018 Article en page(s) : p. 564-573 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Composites polymères
Composites thermoplastiques -- Moulage par injection
Composites thermoplastiques -- Propriétés mécaniques
Copolymère styrène-éthylène-butadiène
Essais dynamiques
Matières plastiques -- Extrusion
Mica
Microscopie électronique à balayage
Polyéthylène
Polypropylène
Taille des particulesIndex. décimale : 668.4 Plastiques, vinyles Résumé : The mechanical properties of polyethylene (PE)/polypropylene (PP)/styrene-ethylene/butylene-styrene (SEBS)/mica composites were investigated as a model composition. Four types of mica with different particle sizes and different aspect ratios were used. These composites were extruded by a twin-screw extruder and subsequently injection molded, and their mechanical properties, including their tensile, bending, and impact properties were evaluated. The addition of mica to PE/PP/SEBS effectively improved its mechanical properties; the addition of SEBS as a compatibilizer likewise enhanced the mechanical properties compared with those of PE/PP composites without SEBS. The use of larger average particle size and higher aspect ratio mica, such as M-35, M-27, and P-33, effectively increased the tensile and bending properties of the PE/PP/SEBS/mica composites. The morphologies of the composites with an added mica as observed by scanning electron microscopy, showed good dispersion between the matrix polymer and the mica. Note de contenu : - EXPERIMENTS : Materials - Mixing of materials - Molding of composites - Mechanical tests of composites - SEM observations
- RESULTS AND DISCUSSION : Effect of addition of SEBS and mica on mechanical properties - Effect of the addition of four types of mica on the tensile, bending, and impact properties - Morphology of PE/PP, PE/PP/SEBS, PE/PP/mica and PE/PP/SEBS/mica compositesDOI : 10.3139/217.3568 En ligne : https://drive.google.com/file/d/1iVXN53SJLd6VGni0y4QO5Gy7sgVJjdrP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30896 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20077 - Périodique Bibliothèque principale Documentaires Disponible High-performance lightweight construction for large series production / Mathias Mühlbacher in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 5 (05/2012)
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inKUNSTSTOFFE INTERNATIONAL > Vol. 102, N° 5 (05/2012) . - p. 28-32
Titre : High-performance lightweight construction for large series production Type de document : texte imprimé Auteurs : Mathias Mühlbacher, Auteur ; Volker Altstädt, Auteur ; Andreas Spörrer, Auteur ; Peter Michel, Auteur ; Sonja Seidel, Auteur Année de publication : 2012 Article en page(s) : p. 28-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage par injection
Composites thermoplastiques -- Moulage par injection
Matières plastiques dans les automobiles
Modélisation tridimensionnelle
Polyamide 6
Polybutylène téréphtalate
PréformesObjet constituant la majeur partie d’une pièce à fabriquer et qui nécessite un travail supplémentaire pour devenir une pièce finie. Ce terme s’utilise notamment pour le moulage, l’usinage, la taille d’outils en silex, la fabrication de fibre optique…
Renforts textiles
Structure multiaxiale
Tissus directionnelsIndex. décimale : 668.4 Plastiques, vinyles Résumé : Ultralitec Process - Four partners have developed a novel mass-production-compatible production process for thermoplastic high-performance fiber composites. At the heart of the so-called Ultralitec process are 3-D preforms made from UD tapes, which are consolidated in situ and combined with an injection molding process for integrating functions. The process is completely automated, including layup and transfer of the delicate preform. Note de contenu : - A wide range of thermoplastic composites
- "Large-dimension lightweight construction modules with integrated injection molding"
- Through the oven in the paternoster
- Pre-development is underway for the first series parts
- Precise fiber orientation
- A globally unique systemPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16361 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13911 - Périodique Bibliothèque principale Documentaires Disponible Hybrid moulding plus IMD technology for the mass production of thermoplastic composites / Jochen Bauder in JEC COMPOSITES MAGAZINE, N° 111 (03/2017)
PermalinkImproving composite manufacturing reliability and yield with affordable models and simulations / Elena Syerko in JEC COMPOSITES MAGAZINE, N° 120 (04/2018)
PermalinkInfluence of processing parameters on the fiber length and impact properties of injection molded long glass fiber reinforced polypropylene / M. Rohde in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 3 (07/2011)
PermalinkInjection molding of fibre reinforced thermoplastics : Integration of fibre orientation and mechanical properties computations / H. Miled in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
PermalinkLight in weight, high in performance / Matthias Wuchter in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 9 (09/2011)
PermalinkLightweight parts with a thermoplastic matrix / Roger Kaufmann in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 3 (03/2011)
PermalinkMulti-cell, thermoplastic composite sandwich panel concept / A. Offringa in SAMPE JOURNAL, Vol. 46, N° 4 (07-08/2010)
PermalinkNew horizons for lightweight construction / Peter Egger in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 3 (03/2011)
PermalinkPlastiques. Matières à mouler. Thermoplastiques amorphes. Mesure du post-retrait des éprouvettes - Norme NF T 53-035 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1981)
PermalinkA practicable way to produce continuous fiber-reinforced hollow articles / Christian Hopmann in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 4 (04/2014)
PermalinkRecyclage des matériaux composites renforcés par des fibres végétales in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 20, N° 3 (09-10-11-12/2010)
PermalinkRole of wood flour on physical and mechanical properties in polymer matrix composites - a critical review / Lalit Ranakoti in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 31, N° 2 (04/2021)
PermalinkSoftware-based control of IR ovens / Junsheng Luo in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 1 (2021)
PermalinkUsing simulation to accelerate the time to application / József Nagy in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 3 (03/2016)
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