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Analysis of the mechanical response of impact loaded composite sandwich structures with focus on foam core shear failure
Sandwich structures are an economically and structurally efficient way of designing large integral composite parts. In the aerospace industry pre-impregnated face sheets and honeycomb core structures can be considered as industry standard while e.g. naval structures and wind turbine blades typically use vacuum infusion technology with polymer foam cores. Application of the less costly infusion technology in the aeronautical industry requires a thorough understanding of the damage tolerance including low velocity impact as a frequent source of damaging events. At low impact energies damage in composite foam core sandwich structures is limited to core crushing and local face sheet delamination...
Entwicklung eines Verfahrens zur Weiterverwertung von Produktionsverschnitt aus unausgehärtetem Epoxidharz-Prepreg
Wie können Produktionsabfälle einer industriellen Faserverbundfertigung recycelt werden? Seit den frühen achtziger Jahren werden kohlenstofffaserverstärkte Kunststoffe (CFK) in der Luftfahrtindustrie in großem Umfang eingesetzt. Erst jüngere Entwicklungen richteten den Fokus auch auf das Ende des Produktlebenszyklus, das Recycling dieser Werkstoffe. Zwar können CFK-Werkstoffe bereits heute mittels Thermolyse recycelt werden, dabei geht jedoch die Hälfte des Werkstoffes – der Polymeranteil – verloren. Die Arbeit widmet sich der Frage, wie CFK-Produktionsreste verlustfrei direkt weiterverwertet werden können und stellt technisch validierte Lösungen zur Verarbeitung sowie ein Modell zur analytischen Abschätzung der mechanischen Eigenschaften solcher Mehrphasenverbunde dar.
A rapid virtual autoclave for carbon fiber reinforced plastics
Structural carbon fiber reinforced plastic parts are usually manufactured through autoclave processing for high-performance aerospace applications. Today’s aerospace composite manufacturing techniques require high quality with robust manufacturing processes. Manufacturing process simulation enables the investigations of physical effects and manufacturing process mechanisms. This approach has been increasingly used to predict and optimize the manufacturing process for high part quality at low manufacturing costs. Owing to a complicated manufacturing environment involving multi-physics characteristics, there is a critical need to develop an efficient and cost-effective numerical methodology ...
Multiagent Engineering
This book gives detailed descriptions of the development of two large scale multiagent systems: Agent.Hospital and Agent.Enterprise. These two systems have been developed in close cooperation with more than 20 enterprises and hospitals. They demonstrate clearly that multiagent technology has a great potential for innovative information systems, if a high degree of flexibility of the overall systems is required, e.g. because human actors and technical systems exhibit a great degree of local autonomy, or if the work environment is highly dynamic.
Total Knee Arthroplasty
This comprehensive reference on total knee arthroplasty describes all surgical techniques and prosthetic designs for primary and revision arthroplasty, discusses every aspect of patient selection, preoperative planning, and intraoperative and postoperative care.
From the Soviet Bloc to the European Union
An authoritative study that covers the social and economic history of Central and Eastern Europe since 1973.
The 1956 Hungarian Revolution
This volume presents the story of the Hungarian Revolution in 120 original documents, ranging from the minutes of Khrushchev's first meeting with Hungarian leaders after Stalin's death in 1953, to Yeltsin's declaration on Hungary in 1992. The great majority of the material comes from archives that were inaccessible until the 1990s, and appears here in English for the first time. Book jacket.
The Medieval World
This groundbreaking collection brings the Middle Ages to life and conveys the distinctiveness of this diverse, constantly changing period. Thirty-eight scholars bring together one medieval world from many disparate worlds, from Connacht to Constantinople and from Tynemouth to Timbuktu. This extraordinary set of reconstructions presents the reader with a vivid re-drawing of the medieval past, offering fresh appraisals of the evidence and modern historical writing. Chapters are thematically linked in four sections: identities beliefs, social values and symbolic order power and power-structures elites, organizations and groups. Packed full of original scholarship, The Medieval World is essential reading for anyone studying medieval history.
Time Frames
11 Post- tradition in Japanese culture -- Heritage -- 12 Industrial architecture -- 13 Landscape architecture -- 14 Middle- class housing -- Memory -- 15 Cultural institutions -- 16 Architectural photography -- Conservation -- 17 Laws and regulations -- 18 Technology -- Economy -- 19 Economic analysis -- Index of places -- Index of names
