99,762 research outputs found
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
Design, analysis and testing of thermoplastic welded stiffened panels to investigate skin-stringer separation in post-buckling
No full textThermoplastic composite three-stringer panels with omega stiffeners and conduction welded joints are designed, analysed and tested until final failure to investigate the performance of the welded joint in post-buckling. The three-stringer panels are designed to be structurally representative of the fuselage demonstrator of the Clean Sky 2 project STUNNING. A simplified model of the fuselage keel section is analysed by finite element analysis, using the virtual crack closure technique to model skin-stringer separation of the welded joint. The post-buckling and skin-stringer separation behaviour of the fuselage section is then adopted as the reference for the design of the three-stringer panels. Two panels are then tested. The test setup utilises digital image correlation to measure the deformation of the panels, and a high-speed camera to capture the final failure mode. The panels failed in post-buckling due to the separation of the middle stringer, with unstable separation growth followed by separation of the outer stringers and then stringer fracture. The numerical analysis of the panels, with geometrical imperfections included, is able to predict the structural behaviour accurately, with only minor differences in buckling shape and separation behaviour.Aerospace Structures & Computational Mechanic
Buckling and Postbuckling Analysis of a CFRP Stiffened Panel for a better material exploitation
No full textTthis paper will presents main results of post-buckling analyses led during the activity of the GARTEUR action group. A CFRP curved stringer stiffened panel under axial compression has been studied. The panel, tested by DLR, has been impacted inducing skin-stringer separation. Partners have carried out several analyses
with various in-house and main commercial FE software to identify their abilities and deficiencies. The simulation tools and analysis methods will be compared together with available experimental
results
Steven Johnson Author Talk Poster
No full textK-State Book NetworkA poster advertising an author talk by Steven Johnson at Kansas State University on September 3, 2014. Steven Johnson's book "The Ghost Map" was the 2014-2015 common book
K. J. Stringer, éd. — Essays on the Nobility of Medieval Scotland[rec. d'articles], 1985
No full textK. J. Stringer, éd. — Essays on the Nobility of Medieval Scotland[rec. d'articles], 1985. In: Cahiers de civilisation médiévale, 30e année (n°119), Juillet-septembre 1987. pp. 298-299
K. J. Stringer, éd. — Essays on the Nobility of Medieval Scotland[rec. d'articles], 1985
No full textK. J. Stringer, éd. — Essays on the Nobility of Medieval Scotland[rec. d'articles], 1985. In: Cahiers de civilisation médiévale, 30e année (n°119), Juillet-septembre 1987. pp. 298-299
Design and analysis of thermoplastic welded stiffened panels in post-buckling
No full textThe Clean Sky 2 “SmarT mUlti-fuNctioNal and INtegrated TP fuselaGe" STUNNING project focusses on the next generation composite fuselage with emphasis on manufacturing techniques such as thermoplastic welding. Welded multi-stringer panels are investigated in this paper, with emphasis on the buckling and skin-stringer separation behavior. The multi-stringer panels are designed to approximate the structural behavior of the lower half of the MultiFunctional Fuselage Demonstrator of the STUNNING project. In particular, a section of the fuselage is analyzed using Abaqus with a dynamic implicit analysis, and the results of this analysis are used for the design of the multi-stringer panels, taking manufacturing considerations also into account. The panels have three omega stringers and a length of 500 mm. The three stringer configuration allows to study the middle stringer in pristine and damaged configuration with minimal influence of the free edges and boundary conditions. It is seen that the multi-stringer test panels show very similar buckling and skin-stringer separation behavior compared to the fuselage section. The first panels have been manufactured by project partners NLR and GKN Aerospace Fokker and will be tested at the Faculty of Aerospace Engineering at Delft University of Technology.Aerospace Structures & Computational Mechanic
Stringer Legality and Jurnalistic Works in Television Media (Legalitas Stringer dan Karya Jurnalistik dalam Media Televisi)
No full textRecently, Media of Television industry is growing rapidly. There are many problems arise, including the rise of contracted media workers who are separated from work agreement system with media companies. It has a duty to get and excavate news of television media without being clearly bound with media companies. This practice is known as stringer. This research attempts to examine the practice of stringer, stringer legality, and the legality of the work of journalistic video produced. Both of them become long term materials in discussing media employment legislation. This study uses the case study method of Robert K. Yin with single case study design that consists of several sub-unit analyses. The purposes of this research are: to understand more deeply about the practice of stringer, the legality of the stringer and the legality of resulting video journalistic work produced. The results of this case show that firstly, the practice of stringer in the television media becomes as a practice of mutualism symbiotic between stringer, contributors in the region and media companies. Secondly, the stringer position in media companies is not recognized as an official work even though their efforts and their works are spread in national media. The practice of stringer is not legal because it is in the vagueness of value, rights and obligations as an official media worker. Thirdly, the legality of the work, the journalistic videos are produced by stringer, it is illegal although claimed to be the work of official journalistic. It contravenes of code of journalistic ethics, because the preaching of the work that has been published in a media is basically protected as a result of copyright and included in the intellectual property rights category. Industri media televisi berkembang pesat, kebutuhan tenaga kerja media turut meningkat, sehingga memungkinkan lahir dan hadirnya pekerja-pekerja media kontrak yang lepas dari sistem perjanjian kerja dengan perusahaan media. Mereka bertugas mencari dan menggali berita tanpa terikat secara jelas dengan perusahaan media. Praktik ini dikenal dengan istilah stringer. Persoalan yang muncul dan menjadi fokus penelitian ini, yaitu legalitas stringer dan legalitas karya video jurnalistik. Keduanya menjadi bahan dalam membahas tentang undang-undang tenaga kerja media. Penelitian ini menggunakan metode studi kasus Robert K.Yin dengan desain studi kasus tunggal terjalin yang terdiri dari beberapa sub unit analisis. Hasil penelitian ini menunjukkan bahwa Pertama, praktek stringer dalam industri media televisi menjadi semacam praktik simbiosis mutualisme antara stringer, kontributor di daerah dan perusahaan media. Kedua, posisi stringer dalam perusahaan media tidak diakui sebagai pekerja resmi meskipun tenaga dan karyanya tersebar di media nasional. Praktik stringer ini tidak legal sebab berada pada ketidakjelasan nilai, hak serta kewajibannya sebagai pekerja media yang resmi. Ketiga, secara legalitas karya. Video jurnalistik yang dihasilkan oleh stringer termasuk illegal meskipun diklaim sebagai karya jurnalis resmi. Hal ini melanggar kode etik jurnalistik sebab pemberitaan hasil karya yang telah dimuat di media pada dasarnya dilindungi sebagai hasil karya cipta dan masuk dalam kategori intellectual property right.
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