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SAMPE JOURNAL / Society for the Advancement of Material and Process Engineering (1973-) . Vol. 44, N° 6Automated processing technologyMention de date : 11-12/2008 Paru le : 28/11/2008 |
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Ajouter le résultat dans votre panierDevelopment of COPV’s for high pressure, in-space, cryogenic fuel storage / R. Noorda in SAMPE JOURNAL, Vol. 44, N° 6 (11-12/2008)
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Titre : Development of COPV’s for high pressure, in-space, cryogenic fuel storage Type de document : texte imprimé Auteurs : R. Noorda, Auteur ; J. Noorda, Auteur ; D. Patterson, Auteur ; J. A. Schneider, Auteur ; M. Dyess, Auteur ; W. C. Hastings, Auteur Année de publication : 2008 Article en page(s) : p. 6-14 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : Polymeric composite overwraped pressure vessels (COPV's) provide an attractive material system to support developing commercial launch business and alternate fuel ventures. However to be able to design with these materials, the mechanical behavior of the materials must be understood with regards to processing, performance, damage tolerance, and environment. For the storage of cryogenic propellants, it is important to evaluate the materials performance and impact damage resistance at cryogenic temperatures in order to minimize weight and to ensure safety and reliability. To evaluate the ultimate performance various polymeric COPV's have been statically burst tested at cryogenic conditions before and after exposure to irradiation. Materials selected for these COPV's were based on the measured mechanical properties of candidate resin systems and fibers that were also tested at cryogenic conditions before and after exposure to irradiation. The correlation of COPV burst pressures with the constituent material properties has proven to be a valuable screening method for selection of suitable candidate materials with resistance to material degradation due to exposure to temperature and radiation. Note de contenu : - RADIATION EXPOSURE
- EXPERIMENTAL PROCEDURE : Neat resin fabrication and testing - Single fiber testing - Split ring fabrication and testing - COPV fabrication and burst testingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2833
in SAMPE JOURNAL > Vol. 44, N° 6 (11-12/2008) . - p. 6-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010884 - Périodique Bibliothèque principale Documentaires Disponible Thermoplastic composite ballistic helmet : Automated fabrication & materials study / D. T. Campbell in SAMPE JOURNAL, Vol. 44, N° 6 (11-12/2008)
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Titre : Thermoplastic composite ballistic helmet : Automated fabrication & materials study Type de document : texte imprimé Auteurs : D. T. Campbell, Auteur ; D. R. Cramer, Auteur Année de publication : 2008 Article en page(s) : p. 18-23 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Advanced Composite Materials/Structures' 'Hybrid 'Thermoforming/Thermoshaping' Index. décimale : 668.4 Plastiques, vinyles Résumé : Thermoplastic advanced composites are a rapidly growing field of advanced materials. Comprising reinforcing fibers embedded in a matrix of thermoplastic resin, these materials offer
high specific strength and stiffness and low density. In addition, thermoplastics’ high toughness makes their use appealing in applications that require energy absorption and strength after impact. Thermoplastic advanced composites also offer potential benefits of reduced cycle time and in-plant air quality for manufacture. This paper describes an initial investigation into the fabrication of a thermoplastic anti-ballistic infantry helmet. The objectives of this investigation were to assess the potential for manufacturing a high-quality helmet via thermoforming and to measure the cycle time for each processing step. The helmet construction included an inner aramid composite anti-ballistic liner and an outer carbon-fiber-reinforced thermoplastic shell. The results of this study indicate a potential for cycle time improvement using thermoplastics, but further work would be required to improve heat transfer during material pre-heating prior to forming and to automate several process steps.Note de contenu : - HELMET DESCRIPTION
- FIBERFORGE MANUFACTURING PROCESS
- MATERIAL DESCRIPTION : Carbon fiber/Polyphenylene sulfite structural shell - Aramid/Thermoplastic polyurethane anti-ballistic layer
- PROCESS DISCUSSION : Blank designEn ligne : http://www.fiberforge.com/documents/Hybrid-Thermoplastic-Composite-Ballistic-Hel [...] Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2834
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Code-barres Cote Support Localisation Section Disponibilité 010884 - Périodique Bibliothèque principale Documentaires Disponible VARTM Infusion : Processing large carbon/epoxy space structures out of the autoclave / J. S. Berg in SAMPE JOURNAL, Vol. 44, N° 6 (11-12/2008)
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Titre : VARTM Infusion : Processing large carbon/epoxy space structures out of the autoclave Type de document : texte imprimé Auteurs : J. S. Berg, Auteur ; J. Higgins, Auteur Année de publication : 2008 Article en page(s) : p. 40-47 Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : Vacuum-assisted resin transfer molding (VARTM) is a common closed mold manufacturing process applicable to the marine and commercial industries. Primary materials generally consist of glass reinforcements with a matrix of either a polyester or vinyl ester resin system. The use of carbon and epoxy material systems in the VARTM process is relatively new due to inherent processing difficulties as well as the prohibitive higher raw material costs. This article describes the material selection, process development, and fabrication of a VARTM process carbon-reinforced/epoxy, full scale space payload vehicle test article. The work is funded by the Air Force Research laboratories, space vehicles directorate as a technology demonstration project for large "out-of autoclave" processing methods using more rapid manufacturing techniques. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2835
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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010884 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |