Face-sheet analysis ant thermo-physical property characterization of OOA and autoclave panels / S. G. Miller in SAMPE JOURNAL, Vol. 48, N° 5 (09-10/2012)

[article]  inSAMPE JOURNAL > Vol. 48, N° 5 (09-10/2012) . - p. 56-61 Titre : Face-sheet analysis ant thermo-physical property characterization of OOA and autoclave panels Type de document : texte imprimé Auteurs : S. G. Miller, Auteur ; R. D. Lort, Auteur ; James K. Sutter, Auteur ; L. I. Pelham, Auteur ; L. S. McCorkle, Auteur ; D. A. Scheiman, Auteur Année de publication : 2012 Article en page(s) : p. 56-61 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Autoclave (technologie) Caractérisation Composites à fibres de carbone Construction sandwich Epoxydes Hors autoclave (technologie) Matériaux -- Imprégnation Polyimides Structure en nid d'abeilles Index. décimale : 620.1 Mécanique de l'ingénieur (mécanique appliquée) et matériaux Résumé : Increased application of polymer matrix composite (PMC) materials in large vehicle structures requires consideration of non-autoclave manufacturing. The NASA Composites for Exploration project, and its predecessor, Lightweight Spacecraft Structures and Materials project, were tasked with the development of materials and manufacturing processes for structures that will perform in a heavy-lift-launch vehicle environment. Both autoclave and out-of-clave processable materials were considered. Large PMC structures envisioned for such a vehicle included the payload shroud and the interstage connector. In this study, composite sandwich panels representing 1/16th segments of the barrel section of the Ares V rocket fairing were prepared as 1.8m x2.4m sections of the 10m diameter arc segment. IM7/977-3 was used as the face-sheet prepreg of the autoclave processed panels and T40-800B/5320-1 for the out-of -autoclave panels. The core was 49.7 kg/p2 (3.1 lb/ft3) aluminum honeycomb. Face-sheets were fabricated by automated tape laying 153 mm wide unidirectional tape. This work details analysis of the manufactured panels where face-sheet quality was characterized by optical microscopy, cured ply thickness measurements, acid digestion, and thermal analysis. Note de contenu : - EXPERIMENTAL : Panel fabrication - Face-sheet characterization core and adhesive removal - Optical microscopy - Void analysis - Dynamic mechanical analysis - RESULTS AND DISCUSSION : IM7/977-3 - Cured Ply Thickness (CPT) - DMA - 3.2T40-800B/5320-1 - Void analysis - Cured Ply Thickness Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16081 [article]

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