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Out-of-autoclave sandwich structure : processing study in SAMPE JOURNAL, Vol. 48, N° 4 (07-08/2012)
[article]
Titre : Out-of-autoclave sandwich structure : processing study Type de document : texte imprimé Année de publication : 2012 Article en page(s) : p. 24-31 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Assemblages collés
Collage
Colles:Adhésifs
Composites
Construction sandwich
Hors autoclave (technologie)
Stratifiés
Stratifiés -- Propriétés mécaniques
Structure en nid d'abeillesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Composite sandwich structures offer several advantages such as reduced weight, high bending/torsion stiffness, superior thermal insulation and excellent acoustic damping over conventional structural materials. One failure mechanism in a composite sandwich structure is the debonding of the composite facesheets from the core structure. A well-formed adhesive fillet at the interface of the honeycomb core cell walls and the laminate is a significant factor preventing bond failure. Improved adhesion strength with a well-formed adhesive fillet at the interface of the honeycomb core walls and laminate is the aim of sandwich composite manufacturing, and is one area of investigation in this work. Out-of-autoclave (OOA) processing of composites offers several key benefits compared to autoclave processing such as lower manufacturing cost resulting from a lower capital cost and lower energy consumption. In the present work, the effects of moisturized adhesive film, core type, material system and variable levels of vacuum on adhesive fillet formation are evaluated. Aluminum honeycomb and vented aluminum honeycomb are used as core materials in this study. Two material systems of prepregs and adhesive films, Cycom 5320 prepreg with FM 309-1M adhesive, and MTM45-1 prepreg with MTA-241/PK13 adhesive are used to manufacture the panels and evaluate the performance. A quantitative investigation of the adhesive fillet geometry is carried out for all the panels. Manufactured panels are evaluated for peel strengh and flatwise tensil strength in accordance with ASTM standards. Various combinations of core material, moisture content, material system and vacuum level are evaluated for effects on adhesive strength and adhesive foaming. Note de contenu : - Materials
- Manufacturing
- Statistical analysis
- Performance evaluation : Flatwise tensile strength - Climbing drum peel strength - Photomicrography
- Results and discussion : Flatwise tensile test - Climging drum peel testEn ligne : http://www.nxtbook.com/nxtbooks/sampe/journal_20120708/index.php?startid=24 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15607
in SAMPE JOURNAL > Vol. 48, N° 4 (07-08/2012) . - p. 24-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14011 - Périodique Bibliothèque principale Documentaires Disponible PAN nano-cobweb-bead-on-string fiber composite membrane for air filtration / Yazhi Liu in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 4 (11/2022)
[article]
Titre : PAN nano-cobweb-bead-on-string fiber composite membrane for air filtration Type de document : texte imprimé Auteurs : Yazhi Liu, Auteur ; Yuepeng Xu, Auteur ; Zhaolin Liu, Auteur ; Wei Wang, Auteur ; Ni Wang, Auteur Année de publication : 2022 Article en page(s) : p. 207-210 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Composites à fibres
Construction sandwich
Electrofilature
Filtres à air
Membranes (technologie)
Polyacrylonitrile
Textiles et tissus à usages techniquesIndex. décimale : 677.4 Textiles artificiels Résumé : Sandwich structured polyacrylonitrile (PAN) nano-cobweb/bead-on-string fiber composite membranes were prepared by sequential electrospinning. With integrated features of ultra-fine nano-cobwebs and interconnected tortuous cavities among bead-on-string fibers, the composite membranes can exhibit very interesting air filtration performance by regulating the nano-cobweb/bead-on-string fiber mass ratio and basis weight. The results show that the filtration efficiency and the pressure drop decrease and then increase slightly with the increasing content of bead-on-string fiber. However, the quality factor goes up first, and then down, indicating the beneficial effect of modest bead-on-string fiber content on air filtration property. As the basis weight increases, the growth of filtration efficiency slows down and the pressure drop rises significantly, making the quality factor improve initially and then decline. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the PAN nano-cobweb/bead-on-string fiber composite membranes - Characterization
- DISCUSSION : Structure design of the PAN nano-cobweb/bead-on-string fiber composite membrane - Air filtration performance of the membranes at various nano-cobweb/bead-on-string fiber mass ratios - Air-filtration performance of the membranes at various basis weightsEn ligne : https://drive.google.com/file/d/1g5-rI273fh-tzMqyiWHWuYWaIkvzWmel/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38481
in CHEMICAL FIBERS INTERNATIONAL > Vol. 72, N° 4 (11/2022) . - p. 207-210[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23749 - Périodique Bibliothèque principale Documentaires Disponible PAN nano-cobweb/bead-on-string fiber composite membrane for air filtration / Yazhi Liu in TECHNICAL TEXTILES, Vol. 65, N° 5 (12/2022)
[article]
Titre : PAN nano-cobweb/bead-on-string fiber composite membrane for air filtration Type de document : texte imprimé Auteurs : Yazhi Liu, Auteur ; Yuepeng Xu, Auteur ; Zhaolin Liu, Auteur ; Wei Wang, Auteur ; Ni Wang, Auteur Année de publication : 2022 Article en page(s) : p. 253-255 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Air -- Epuration
Caractérisation
Construction sandwich
Fibres textiles synthétiques
Filtration
Filtres à air
Membranes (technologie)
PolyacrylonitrileIndex. décimale : 677.47 Non cellulosiques : Nylon, acryliques, polyesters, vinyles Résumé : Sandwich structured polyacrylonitrile (PAN) nano-cobweb/bead-on-string fiber composite membranes were prepared by sequential electrospinning. With integrated features of ultra-fine nano-cobwebs and interconnected tortuous cavities among bead-on-string fibers, the composite membranes can exhibit very interesting air filtration per¬formance by regulating the nano-cobweb/bead-on-string fiber mass ratio and basis weight. The results show that the filtration efficiency and the pressure drop decrease and then increase slightly with the increasing content of bead-on-string fiber. However, the quality factor goes up first, and then down, indicating the beneficial effect of modest bead-on-string fiber content on air filtration property. As the basis weight increases, the growth of filtration efficiency slows down and the pressure drop rises significantly, making the quality factor improve initially and then decline. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the PAN nano-cobweb/bead-on-string fiber composite membranes - Characterization
- DISCUSSION : Structure design of the PAN nano-cobweb/bead-on-string fiber composite membrane - Air filtratio nperformance of the membranes at various nano-cobweb/bead-on-string fiber mass ratios - Air filtration performance of the membranes at various basis weightsEn ligne : https://drive.google.com/file/d/1UKQ3JoPpgc-YAjfZNAwCwzqbF07sEt_r/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38743
in TECHNICAL TEXTILES > Vol. 65, N° 5 (12/2022) . - p. 253-255[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23779 - Périodique Bibliothèque principale Documentaires Disponible Le panneau sandwich structurel marque des points / Richard Filippi in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 862 (11/2008)
[article]
Titre : Le panneau sandwich structurel marque des points Type de document : texte imprimé Auteurs : Richard Filippi, Auteur ; Christophe Binetruy, Auteur Année de publication : 2008 Article en page(s) : p. 62-65 Langues : Français (fre) Catégories : Construction sandwich
Construction sandwich -- Propriétés mécaniques
Contraintes (mécanique)
Panneaux préfabriquésIndex. décimale : 668.4 Plastiques, vinyles Résumé : Rigide et léger, ce matériau qui présente un bon bilan énergétique voit son coût baisser. Surtout utilisé dans l'aéronautique, il s'ouvre vers d'autres secteurs : l'éolien, les transports et le bâtiment. Note de contenu : - Rigidité et légèreté
- Problématique de conception
- Propriétés complémentaires
- Plusieurs fonctions en une seule opération
- Tableau : Différents types de sandwichPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21218
in PLASTIQUES & CAOUTCHOUCS MAGAZINE > N° 862 (11/2008) . - p. 62-65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010846 - Périodique Bibliothèque principale Documentaires Disponible Performance enhancement by using a bi-angle composite sandwich beam / Sangwook Sihn in JEC COMPOSITES MAGAZINE, N° 68 (10/2011)
[article]
Titre : Performance enhancement by using a bi-angle composite sandwich beam Type de document : texte imprimé Auteurs : Sangwook Sihn, Auteur Année de publication : 2011 Article en page(s) : p. 68-69 Langues : Anglais (eng) Catégories : Composites à fibres
Construction sandwich
Contraintes (mécanique)
Eléments finis, Méthode des
Flambage (mécanique)
Flexion (mécanique)
Simulation par ordinateur
Stratifiés
Torsion (mécanique)Index. décimale : 620.11 Matériaux (propriétés, résistance) Résumé : Besides their superior stiffness and strength properties, bi-angle laminated composites offer benefits in terms of vibrational natural frequencies and critical buckling loads under bending and torsional loading as compared to conventional quasi-isotropic laminates and metals. The advantages of bi-angle laminates were demonstrated through a numerical analysis of a composite sandwich beam. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17322
in JEC COMPOSITES MAGAZINE > N° 68 (10/2011) . - p. 68-69[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13511 - Périodique Bibliothèque principale Documentaires Disponible Pitch-catch (low frequency) bondtesters / N. R. Smith in SAMPE JOURNAL, Vol. 47, N° 6 (11-12/2011)
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