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Mathematical modelling of vibration response characteristics for dissimilar hot plate welded polyamide 6 composite beams / M. Kara in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 4 (08/2017)
[article]
Titre : Mathematical modelling of vibration response characteristics for dissimilar hot plate welded polyamide 6 composite beams Type de document : texte imprimé Auteurs : M. Kara, Auteur ; N. Öztoprak, Auteur ; A. Seçgin, Auteur ; S. Sayer, Auteur ; Ç. E. Yeni, Auteur Année de publication : 2017 Article en page(s) : p. 489-501 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse modale Une analyse modale permet de fournir les propriétés dynamiques d'une structure quelle que soit sa taille, sa forme ou ses matériaux. Elle permet de faire des modifications ou des ajustements de conception si c'est nécessaire. L'analyse des vibrations sur des composants et sur des systèmes est un processus standard d'IAO dans l'environnement d'aujourd'hui des véhicules à moteur, aérospatial, ou pour le développement de MEMS. La vibrométrie laser palie aux défauts de mesure que peuvent présenter les accéléromètres comme la rapidité de mise en place d'une mesure, l'effet de masse ajoutée.
Matières plastiques -- Propriétés mécaniques
Matières plastiques -- Soudage
Modèles mathématiques
Polyamide 6
Soudage par vibrations
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : This study is concerned with the mathematical modelling of the vibration response characteristic of a special dissimilar composite beam based on experimental modal analysis. Here, experimental modal analyses of three different dissimilar polyamide 6 composite beams, which are connected to each other by hot plate welding are performed. The measured natural frequencies are compared with finite element predictions for verification purposes. Modal information obtained by experiments is used to construct a mathematical model representing vibration response characteristic of beams by applying multi degree of freedom curve fitting method. The model showing modal characteristics of dissimilar beams is now ready to be used in different kinds of excitations to predict the frequency response of vibration. Note de contenu : - MATERIALS AND METHODS : Dissimilar welded beams - Experimental modal analysis - Experimental setup for modal analysis and data verification
- RESULTS AND DISCUSSION : Tensile properties - Modal analysisDOI : 10.3139/217.3409 En ligne : https://drive.google.com/file/d/1F2WRMzGigzWvLRT9yjQufWOSt4J7KayL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28906
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 4 (08/2017) . - p. 489-501[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19165 - Périodique Bibliothèque principale Documentaires Disponible Measurement and numerical simulation of void and warpage in glass fiber reinforced molded chunky parts / Stefan Kleindel in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 1 (03/2015)
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Titre : Measurement and numerical simulation of void and warpage in glass fiber reinforced molded chunky parts Type de document : texte imprimé Auteurs : Stefan Kleindel, Auteur ; D. Salaberger, Auteur ; R. Eder, Auteur ; H. Schretter, Auteur ; C. Hochenauer, Auteur Année de publication : 2015 Article en page(s) : p. 100-112 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres de verre -- Moulage par injection
Déformations (mécanique)
Gauchissement (matériaux)
Moulage par injection -- Défauts
Polyamide 6
Simulation par ordinateurIndex. décimale : 668.9 Polymères Résumé : The aim of this paper is to determine the reason for the large warpage of an injection molded chunky part made of glass fiber reinforced polyamide 6. State of the art commercial 3D injection molding simulation software was used to predict the warpage of the part. While the simulation predicted a product virtually free of warpage the molded parts showed a large deformation. Several molding experiments and X-ray computed tomography (?CT) scans of the moldings have been performed to figure out the reason for this. The ?CT scans revealed voids in the thick walls of the part. It was found that these defects were the main cause of the unreliable simulation results. Therefore it is concluded that voids can have a major influence on the reliability of numerical warpage predictions. This paper shows a simplified method to determine the zones were voids will appear and shows the comparison with ?CT-data. Note de contenu : - PROBLEM DESCRIPTION
- MEASUREMENTS
- EXPERIMENTS : Initial case - Variant
- NUMERICAL ANALYSIS : Computational mesh - Material data - Fiber orientation - Warpage prediction - Process settings - Solver settings
- RESULTS AND DISCUSSION : Experimental results - µCT results - Simulation results - Prediction of porous zonesDOI : 10.3139/217.2984 En ligne : https://drive.google.com/file/d/1d_Zb9TKitwRi7zAjPmz5RFAXco_AJv4m/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23427
in INTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 1 (03/2015) . - p. 100-112[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17016 - Périodique Bibliothèque principale Documentaires Disponible Mechanical properties of PMMA-based biocomposites with polyamide and polyvinylpyrrolidone blends for denture applications / Wassan S. Hussain in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 5 (10/2023)
[article]
Titre : Mechanical properties of PMMA-based biocomposites with polyamide and polyvinylpyrrolidone blends for denture applications Type de document : texte imprimé Auteurs : Wassan S. Hussain, Auteur ; Jawad K. Oleiwi, Auteur ; Qahtan A. Hamad, Auteur Année de publication : 2023 Article en page(s) : p. 293-302 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
Composites
Polyamide 6
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Polyvinylpyrrolidone
Poudres
Prothèses dentairesIndex. décimale : 668.4 Plastiques, vinyles Résumé : By blending heat-cured polymethylmethacrylate (PMMA) resin with two different types of polymers, which are polyamide (PV) type (6) and polyvinylpyrrolidone (PVP) type (K30), added separately with various weight fractions (0, 2, 4 and 6%) to heat-cured PMMA resin as blend matrix, attempts have been made in this study for developing the PMMA resin properties employed for prosthesis complete denture. Sisal powder and coconut powder, two different types of natural powders, were added separately to the polymer blend matrices with varying weight fractions (2%, 4%, and 6%) to prepare composite specimens. Hand lay-up methods were used for preparing all specimens. This study covered the flexural test using the 3-point bending method, the impact test using the Izod method, and the maximum shear stress test using the 3-point bending method. According to the results, adding polymer blends and reinforcing powders boosts the impact strength, while lowering flexural modulus, flexural strength, and maximum shear stress. The composite specimens made of (PMMA-2% PVP-6% sisal) manifested the best impact strength and value (11.875 KJ/m2). These findings lead to the conclusion that using PMMA-based biocomposites with polyamide and polyvinylpyrrolidone blends improved impact strength for denture applications, which is one of the most important properties of these applications. Note de contenu : - EXPERIMENTAL WORK : Materials used - Salinization treatment - Preparation method of specimens
- EXPERIMENTAL : Tests - Flexural test Impact test - Maximum shear strength test
- RESULTS : Results of flexural text - Results of the impact strength and fracture toughness - Results of the maximum shear stressDOI : https://doi.org/10.18280/rcma.330503 En ligne : https://www.iieta.org/download/file/fid/113371 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40528
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 33, N° 5 (10/2023) . - p. 293-302[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24431 - Périodique Bibliothèque principale Documentaires Disponible Melt creep recovery of polyamide 6 and polypropylene nanocomposites blended with layered silicate / G.-G. Lin in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)
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Titre : Melt creep recovery of polyamide 6 and polypropylene nanocomposites blended with layered silicate Type de document : texte imprimé Auteurs : G.-G. Lin, Auteur ; Y.-F. Jang Jian, Auteur ; C.-T. Huang, Auteur Année de publication : 2016 Article en page(s) : p. 11-17 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Composites -- Fluage
Essais dynamiques
Etat fondu (matériaux)
Matériaux hybrides
Montmorillonite
Polyamide 6
Polypropylène
Rhéologie
SilicatesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Nanocomposites of polyamide six (PA6) reinforced with organoclay were prepared in this study through melt mixing. The blended montmorillonite clay was organically modified with octadecylamine. The loadings of the clay were 1 wt%, 5 wt%, and 9 wt%. The obtained nanocomposites exhibited exfoliation (1 wt%) and intercalation (other compositions) structures. By contrast, if they were mixed with unmodified clay, the PA6 molecules could not enter the silicate interlayer. For polypropylene (PP), forming nanocomposites with organoclay was difficult but made feasible by incorporating the maleated PP. The results of dynamic rheological tests demonstrated that an end-tethered storage modulus was observed for the PA6/organoclay nanocomposites. However, the PP/organoclay exhibited terminal-zone behavior. In addition, the shear creep recovery was conducted on the molten polymer composites. The results indicated that the molten PA6/organoclay nanocomposite exhibited a higher creep-recovery ratio, a measure of the elastic property, than that of pristine PA6. The time constant in the Voigt-Kelvin constitutive model for the PA6/organoclay melts was lower than that of the pristine PA6 due to the superior elastic moduli, because it is defined as the ratio of viscosity to the modulus. However, the recovery ratios for most of the PP nanocomposites were found to be less than that for the pristine PP, indicating the fair reinforcing effect of the organoclay. Note de contenu : - EXPERIMENTAL : Materials - Clay modification - Preparing nanocomposites - Structure characterization - Rheological measurement - Constitutive model
- RESULTS AND DISCUSSION : X-ray diffraction patterns - Dynamic testing - Creep recoveryDOI : 10.3139/217.3041 En ligne : https://drive.google.com/file/d/1Hu1p5PTOyzSpFifWGlANMWkM2kqBy5SO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25761
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Code-barres Cote Support Localisation Section Disponibilité 17899 - Périodique Bibliothèque principale Documentaires Disponible Melt spinning of electrically conductive fibers with heating function / Wilhelm Steinmann in CHEMICAL FIBERS INTERNATIONAL, (10/2013)
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Titre : Melt spinning of electrically conductive fibers with heating function Type de document : texte imprimé Auteurs : Wilhelm Steinmann, Auteur ; Joachim Ros, Auteur ; Karolina Jaksik, Auteur ; Gunnar Seide, Auteur ; Thomas Gries, Auteur Année de publication : 2013 Article en page(s) : p. 52-53 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conducteurs organiques
Conduction électrique
Extrusion filage
Mélanges-maîtres (chimie)
Nanotubes
Polyamide 6
Polyéthylène
Polypropylène
ThermocinétiqueIndex. décimale : 677.4 Textiles artificiels Résumé : Electrically conductive fibers can be made of several materials, including metal coatings, metal wires, intrinsically conducting polymers (ICPs) and polymer nanocomposites. Usually, the electrical conductivity is lower for nanocomposite fibers compared to the other concepts. The electrical power lost during the transport of the electrical current is converted to heat, whereas this effect can be used to apply the fibers as heating elements. In this article, the melt spinning of such fibers is demonstrated. Note de contenu : - Material
- Melt spinning
- Electrical conductivity
- Demonstration of heatingEn ligne : https://drive.google.com/file/d/1eHlFfjrJUsAhcGxXW0H-PL58cA6tYC3F/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19769
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Code-barres Cote Support Localisation Section Disponibilité 15619 - Périodique Bibliothèque principale Documentaires Disponible Metal substitution with improved PA / Jens Cremer in KUNSTSTOFFE INTERNATIONAL, Vol. 110, N° 10 (2020)
PermalinkMonitoring the production of polymer nanocomposites by melt compounding with on-line rheometry / S. T. Mould in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
PermalinkMore potential for lightweight construction / Jürgen Selig in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 3 (03/2012)
PermalinkMorphology control and stabilization in immiscible polypropylene and polyamide 6 blends with organoclay / J. Huang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 4 (08/2014)
PermalinkNatural dyeing and antibacterial activity of atmospheric-plasma-treated nylon 6 fabric / Aminoddin Haji in COLORATION TECHNOLOGY, Vol. 130, N° 1 (02/2014)
PermalinkA new generation of sustainable bidirectional fabrics in JEC COMPOSITES MAGAZINE, N° 146 (06-07/2022)
PermalinkNew halogen-free flame-retardant additive for PA6 fibers / Felix B. Stutz in CHEMICAL FIBERS INTERNATIONAL, Vol. 68, N° 4 (12/2018)
PermalinkNew halogen-free flame-retardant additive for PA6 fibers / Felix B. Stutz in CHEMICAL FIBERS INTERNATIONAL, (10/2019)
PermalinkPermalinkPermalinkNew thermoplastic modular truck bumpers in JEC COMPOSITES MAGAZINE, N° 81 (05-06/2013)
PermalinkA new way to a compromise / Marcus Poindl in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 1 (01/2013)
PermalinkNouveau coup d'accélérateur / Grégory Delannoy in CAOUTCHOUCS & PLASTIQUES, N° 779 (09/1999)
PermalinkOrgano sheet recycling / Stefan Seidel in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 1 (2021)
PermalinkOrganoclay imparts scratch resistance / David Evans in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 1-2 (01-02/2017)
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