Composite repair for manufacturing, MRO and field applications with integrated repair systems / S. Blake in SAMPE JOURNAL, Vol. 46, N° 3 (05-06/2010)

[article]  inSAMPE JOURNAL > Vol. 46, N° 3 (05-06/2010) . - p. 6-9 Titre : Composite repair for manufacturing, MRO and field applications with integrated repair systems Type de document : texte imprimé Auteurs : S. Blake, Auteur Année de publication : 2010 Article en page(s) : p. 6-9 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériaux  composites'  'Radome  C-130'  Réparation  'Processus  de  réparation'  'Technologie  laser'  'Contrôle  qualité' Index. décimale : 668.4 Plastiques, vinyles Résumé : A DoD Commercial Technologies for Maintenance Applications (CTMA) program has supported the evaluation and integration of metrology, inspection and manufacturing systems into a series of "repair cells". The inspect repair preparation cell (IRPC) efficiency of the repair process. The integrated components on C-130 radomes with the goal of significantly improving the quality and programs. All data used in the cell is referenced to a common coordinate system. This enables the repair process to be performed with the speed and precision of current manufacturing processes. Referencing a variety of inspection modalities to a common coordinate system enhances the detection of defects and damage not visible at the surface of the structure. Shearography data has been overlaid onto surface data and displayed on the C-130 radome with a laser projection system for comparison with tap test results. This NDI overlay is the basis for "model based repair" which can drive automated scarfing as well as other standard manufacturing processes not currently used in repair. Note de contenu : INTRODUCTION : Advanced composite repair processes / Barriers to the use of advanced manufacturing processes in repair / Current repair processes / Problems with current methods & previously repaired areas. INTEGRATED REPAIR SYSTEM : Integrated repair system functions / Features & benefits of the components in the integrated repair system. RESULTS : Shearography data overlay & display with laser projection / Use of advanced mnaufacturing processes in repair. ENABLING TECHNOLOGIES : New processes and technologies for repair / Programmable scarfing / Model based repair / Integrated repair system. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9305 [article]

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In-process fiber orientation measurement and foreign object damage (FOD) prevention for complex preform or prepreg lay-ups / K. Hazra in SAMPE JOURNAL, Vol. 48, N° 1 (01-02/2012)

[article]  inSAMPE JOURNAL > Vol. 48, N° 1 (01-02/2012) . - p. 6-11 Titre : In-process fiber orientation measurement and foreign object damage (FOD) prevention for complex preform or prepreg lay-ups Type de document : texte imprimé Auteurs : K. Hazra, Auteur ; S. Blake, Auteur ; K. Potter, Auteur ; M. Wisnom, Auteur Année de publication : 2012 Article en page(s) : p. 6-11 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres Contraintes (mécanique) Distribution et orientation des fibres Matériaux -- Imprégnation Mesure Préformes Objet constituant la majeur partie d’une pièce à fabriquer et qui nécessite un travail supplémentaire pour devenir une pièce finie. Ce terme s’utilise notamment pour le moulage, l’usinage, la taille d’outils en silex, la fabrication de fibre optique… Renforts textiles Résistance au chocs Index. décimale : 668.4 Plastiques, vinyles Résumé : Process control in both automated and manual production of composites structures is essential to ensure that the "as-built" part is an accurate realization of the characteristics chosen by the part designer. Manufacturing variations from the nominal design can result in compromised part performance or even structural failure. The lack of efficient, near-real-time, quantitative reporting of part characteristics during part fabrication results in an uncertainty requiring overdesign, with corresponding extra material and weight. An in-process vision system that compares design model and as-built characteristics has been operated on a complex preform as well as hand laid prepreg material. The system and its operation are described along with results achieved in initial applications. Note de contenu : - Background - Approach - The projector vision system - The preform - Prepreg lay-up - Hand lay-up results - FOD - Operational objectives - Results - Preform results - Further developmental work Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12921 [article]

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