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Within the scope of this work, Steffen Ropers evaluates the viscoelastic and temperature-dependent nature of the bending behavior of thermoplastic composite sheets in order to further enhance the predictability of the draping simulation. This simulation is a useful tool for the development of robust large scale processes for continuously fiber-reinforced polymers (CFRP). The bending behavior thereby largely influences the size and position of wrinkles, which are one of the most common processing defects for continuously fiber-reinforced parts. Thus, a better understanding of the bending behavior of thermoplastic composite sheets as well as an appropriate testing method along with corresponding material models contribute to a wide-spread application of CFRPs in large scale production.
In this work, initially, the requirements on a simulation model of the non-isothermal stamp forming process of unidirectional fiber-reinforced, and thermoplastic tape laminates are investigated experimentally. On this basis, different isothermal as well as a fully coupled thermomechanical simulation model under consideration of the crystallization kinetics are developed. For validation, a complex shaped geometry is simulated and compared to experimental forming results.
Interdisciplinary development approaches for system-efficient lightweight design unite a comprehensive understanding of materials, processes and methods. This applies particularly to continuous fibre-reinforced plastics (CoFRPs), which offer high weight-specific material properties and enable load path-optimised designs. This thesis is dedicated to understanding and modelling Wet Compression Moulding (WCM) to facilitate large-volume production of CoFRP structural components.
Dieses legendäre Werk von Hans Szymanski entstand nach einer ausführlichen Studienreise in den 1930er Jahren entlang der gesamten Niederelbe und der Unterweser. Es stellt ein einzigartiges Kompendium über die historische Schiffahrt in der Elbmarsch dar und wurde bereits mehrfach wieder aufgelegt. Auch heute existiert kein besser recherchiertes Buch zu diesem Thema. Es befasst sich mit allen bekannten Bauwerften, Schiffstypen, Bauweisen, der unterschiedlichen Takelung und der Verwendung der Schiffe bis hin zu der transportierten Ladung.
Within the scope of this work, Steffen Ropers evaluates the viscoelastic and temperature-dependent nature of the bending behavior of thermoplastic composite sheets in order to further enhance the predictability of the draping simulation. This simulation is a useful tool for the development of robust large scale processes for continuously fiber-reinforced polymers (CFRP). The bending behavior thereby largely influences the size and position of wrinkles, which are one of the most common processing defects for continuously fiber-reinforced parts. Thus, a better understanding of the bending behavior of thermoplastic composite sheets as well as an appropriate testing method along with corresponding material models contribute to a wide-spread application of CFRPs in large scale production.
Published for devotees of the cowboy and the West, American Cowboy covers all aspects of the Western lifestyle, delivering the best in entertainment, personalities, travel, rodeo action, human interest, art, poetry, fashion, food, horsemanship, history, and every other facet of Western culture. With stunning photography and you-are-there reportage, American Cowboy immerses readers in the cowboy life and the magic that is the great American West.
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Functionality of Food Proteins: Mechanisms, Modifications, Methods of Assessment and Applications provides researchers and users of plant-based proteins with the latest developments on their functionality at the molecular and ingredient level, and in food applications. The book discusses the biological, chemical and physical principles behind the techno-functional and nutritional properties of proteins, existing methods of functionality assessment, and protein modification for functional enhancement. With market demand for protein ingredients, several lesser known sources are being utilized to develop new protein ingredients and products, with some intended to replace, partially or wholly, t...