Dépouillements

Production tooling : machining, bonding, sealing, and venting of carbon foam / Gary D. Shives in SAMPE JOURNAL, Vol. 45, N° 1 (01-02/2009)

[article]  inSAMPE JOURNAL > Vol. 45, N° 1 (01-02/2009) . - p. 6-12 Titre : Production tooling : machining, bonding, sealing, and venting of carbon foam Type de document : texte imprimé Auteurs : Gary D. Shives, Auteur ; Richard L. Shao, Auteur ; Andrew J. Francis, Auteur ; Douglas J. Miller, Auteur ; R. Umpleby, Auteur ; David M. Kaschak, Auteur Année de publication : 2009 Article en page(s) : p. 6-12 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Assemblages collés Carbone Construction sandwich Mousses (matériaux) -- Applications industrielles Mousses plastiques Stratifiés Index. décimale : 541.34 Solutions Résumé : Carbon foams have attracted considerable recent interest because of their multi-functionality, offering a combination of high strength, low density, low thermal expansion, and a wide, controllable range of thermal conductivities. Among the many potential applications of carbon foam is use as core material in tooling for the high-rate production of composite materials. In tooling applications, a face sheet is applied to the foam to provide durability to the working surface. The coefficient of thermal expansion of the carbon foam material is low, making it an ideal match for carbon fiber composites typically used as such laminates. This paper describes working solutions that enable the use of carbon foam (0.16-0.32 g/cm3) as a core material in composite tooling. These solutions include techniques for machining carbon foam, bonding foam blocks together to produce larger-sized tools, adhering uncured carbon- fiber-based laminates to the foam surface, and drying and venting the material to remove unwanted moisture. Adhesive materials are evaluated for bonding foam blocks; those that performed well are suitable for use up to 250°C. Flexural testing of bonded foam demonstrates that the bond is in many cases stronger than the foam itself. Adhesive sealant materials to be applied between the foam surface and several pre-preg composite layers are also evaluated. Optical micrographs demonstrate that a resin-based sealing material offers good adhesion and sealing of the porous foam surface. Minimum sizes for venting channels to remove unwanted moisture from fully-sealed composite tools are also determined. The results presented here are discussed with respect to use in production rate tooling applications. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3375 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011005	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Case studies : Low cost, high-strength, large carbon foam tooling / Rick Lucas in SAMPE JOURNAL, Vol. 45, N° 1 (01-02/2009)

[article]  inSAMPE JOURNAL > Vol. 45, N° 1 (01-02/2009) . - p. 20-28 Titre : Case studies : Low cost, high-strength, large carbon foam tooling Type de document : texte imprimé Auteurs : Rick Lucas, Auteur ; Harry Danford, Auteur Année de publication : 2009 Article en page(s) : p. 20-28 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Carbone Composites Dilatation (thermodynamique) Mousses (matériaux) -- Applications industrielles Mousses plastiques Usinage Index. décimale : 668.9 Polymères Résumé : A new carbon foam system has been developed that results in a low-cost, high-strength material that has been proving attractive for creation of tooling for composite parts. Composites are stronger, lighter, and less subject to corrosion and fatigue than materials that currently used for fabrication of advanced structures. Tools to manufacture these composite parts must be rigid, durable and able to offer a coefficient of thermal expansion (CTE) closely matching that of the composites. Current technology makes it difficult to match the CTE of a composite part in the curing cycle with anything other than a carbon composite or a nickel iron alloy such as invar. Fabrication of metallic tooling requires many expensive stages of long duration with a large infrastructure investment. Carbon fiber reinforced polymer resin composite tooling has a shorter lead-time but limited production use because of its low cost, light weight, machinability, vacuum integrity, and compatibility with a wide range of curing processes. Large-scale tooling case studies will be presented detailing carbon foam's potential for tooling applications. Note de contenu : - Carbon foam - Carbon foam tooling - Rapid prototype/Short production run tooling - Tool life - Fabrication techniques - Final preparation and processing - Large scale tooling Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3376 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011005	-	Périodique	Bibliothèque principale	Documentaires	Disponible

New solutions for composite tooling / Larry Carver in SAMPE JOURNAL, Vol. 45, N° 1 (01-02/2009)  

[article]  inSAMPE JOURNAL > Vol. 45, N° 1 (01-02/2009) . - p. 48-54 Titre : New solutions for composite tooling Type de document : texte imprimé Auteurs : Larry Carver, Auteur Année de publication : 2009 Article en page(s) : p. 48-54 Langues : Américain (ame) Catégories : Avions -- Matériaux Carbone Construction sandwich Mousses (matériaux) -- Applications industrielles Mousses plastiques Tags : Composite  Intégré  Structure  (ICS)  Mousse  carbone Résumé : A new solution for composite tooling being introduced by Nova-Tech is known as "Integrated Composites Structure" or ICS. This composite structure is a multi-layer material, sandwiching carbon foam between layers of carbon fiber. It has many advantages over other, more conventional materials such as Invar, bismaleimide (BMI) laminate, ant the "VARTM process", for use in fabricating large composite tools. It is light-weight, and has high rigidity. It meets the requirements for thermal and structural stability, and has shown exceptional re-workability. These and other key properties will be discusses later in this paper. Note de contenu : - Material requirements - Overview of the system - Material testing - Benefits of ICS - Tooling applications En ligne : http://www.sme.org/cgi-bin/get-pdf.pl?/gmn/data/events/001754/downloads/carver.p [...] Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3377 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011005	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Designong with composites : siggested "Best Practices" rules / Scott W. Beckwith in SAMPE JOURNAL, Vol. 45, N° 1 (01-02/2009)

[article]  inSAMPE JOURNAL > Vol. 45, N° 1 (01-02/2009) . - p. 16-17 Titre : Designong with composites : siggested "Best Practices" rules Type de document : texte imprimé Auteurs : Scott W. Beckwith, Auteur Année de publication : 2009 Article en page(s) : p. 16-17 Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23278 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011005	-	Périodique	Bibliothèque principale	Documentaires	Disponible