Strukturanalyse Von Lasergesinterten Schichtverbunden Mit Werkstoffmechanischen Methoden
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Strukturanalyse Von Lasergesinterten Schichtverbunden Mit Werkstoffmechanischen Methoden
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Author : Monika Blattmeier
language : de
Publisher: Springer-Verlag
Release Date : 2012-05-26
Strukturanalyse Von Lasergesinterten Schichtverbunden Mit Werkstoffmechanischen Methoden written by Monika Blattmeier and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-05-26 with Technology & Engineering categories.
Die zunehmende Vielfalt von Produktvarianten erfordert flexible Fertigungstechniken, die trotz ihrer Komplexität eine wirtschaftliche Fertigung von Bauteilen möglich machen. Lasersintern gilt derzeit als ein relevantes Fertigungsverfahren, mit dem Funktionsprototypen sowie, in Abhängigkeit von den Anforderungen, auch (End-)Produkte im Bereich der Manufaktur und Kleinserien hergestellt werden. Aus Sicht der Produktentwicklung interessiert, wie lasergesinterte Kunststoffe gezielter in Serienanwendungen integriert werden können. Die Untersuchung zeigt das Leistungsvermögen von lasergesinterten Kunststoffbauteilen im Automobilbau im Hinblick auf die Oberflächenfunktionalität und die mechanischen Eigenschaften. Insbesondere wird das Verformungs- und Versagensverhalten bei Ermüdung beobachtet. Im Mittelpunkt der Analyse steht die Anisotropie, die aus dem mechanischen Wirkprinzip der Schichtstruktur resultiert.
Additive Manufacturing
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Author : Juan Pou
language : en
Publisher: Elsevier
Release Date : 2021-05-21
Additive Manufacturing written by Juan Pou and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-21 with Computers categories.
Additive Manufacturing explains the background theory, working principles, technical specifications, and latest developments in a wide range of additive manufacturing techniques. Topics addressed include treatments of manufactured parts, surface characterization, and the effects of surface treatments on mechanical behavior. Many different perspectives are covered, including design aspects, technologies, materials and sustainability. Experts in both academia and industry contribute to this comprehensive guide, combining theoretical developments with practical improvements from R&D. This unique guide allows readers to compare the characteristics of different processes, understand how they work, and provide parameters for their effective implementation. This book is part of a four-volume set entitled Handbooks in Advanced Manufacturing. Other titles in the set include Advanced Machining and Finishing, Advanced Welding and Deformation, and Sustainable Manufacturing Processes. Provides theory, operational parameters, and latest developments in 20 different additive manufacturing processes Includes contributions from experts in industry and academia with a wide range of disciplinary backgrounds, providing a comprehensive survey of this diverse and influential subject Includes case studies of innovative additive manufacturing practices from industry
Rapid Manufacturing
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Author : Neil Hopkinson
language : en
Publisher: John Wiley & Sons
Release Date : 2006-02-22
Rapid Manufacturing written by Neil Hopkinson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-02-22 with Technology & Engineering categories.
Rapid Manufacturing is a new area of manufacturing developed from a family of technologies known as Rapid Prototyping. These processes have already had the effect of both improving products and reducing their development time; this in turn resulted in the development of the technology of Rapid Tooling, which implemented Rapid Prototyping techniques to improve its own processes. Rapid Manufacturing has developed as the next stage, in which the need for tooling is eliminated. It has been shown that it is economically feasible to use existing commercial Rapid Prototyping systems to manufacture series parts in quantities of up to 20,000 and customised parts in quantities of hundreds of thousands. This form of manufacturing can be incredibly cost-effective and the process is far more flexible than conventional manufacturing. Rapid Manufacturing: An Industrial Revolution for the Digital Age addresses the academic fundamentals of Rapid Manufacturing as well as focussing on case studies and applications across a wide range of industry sectors. As a technology that allows manufacturers to create products without tools, it enables previously impossible geometries to be made. This book is abundant with images depicting the fantastic array of products that are now being commercially manufactured using these technologies. Includes contributions from leading researchers working at the forefront of industry. Features detailed illustrations throughout. Rapid Manufacturing: An Industrial Revolution for the Digital Age is a groundbreaking text that provides excellent coverage of this fast emerging industry. It will interest manufacturing industry practitioners in research and development, product design and materials science, as well as having a theoretical appeal to researchers and post-graduate students in manufacturing engineering, product design, CAD/CAM and CIFM.
Additive Manufacturing Technologies
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Author : Ian Gibson
language : en
Publisher: Springer
Release Date : 2014-11-26
Additive Manufacturing Technologies written by Ian Gibson and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-26 with Technology & Engineering categories.
This book covers in detail the various aspects of joining materials to form parts. A conceptual overview of rapid prototyping and layered manufacturing is given, beginning with the fundamentals so that readers can get up to speed quickly. Unusual and emerging applications such as micro-scale manufacturing, medical applications, aerospace, and rapid manufacturing are also discussed. This book provides a comprehensive overview of rapid prototyping technologies as well as support technologies such as software systems, vacuum casting, investment casting, plating, infiltration and other systems. This book also: Reflects recent developments and trends and adheres to the ASTM, SI, and other standards Includes chapters on automotive technology, aerospace technology and low-cost AM technologies Provides a broad range of technical questions to ensure comprehensive understanding of the concepts covered
Heat And Mass Transfer
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Author : Hans Dieter Baehr
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-08-02
Heat And Mass Transfer written by Hans Dieter Baehr and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-08-02 with Science categories.
This book provides a solid foundation in the principles of heat and mass transfer and shows how to solve problems by applying modern methods. The basic theory is developed systematically, exploring in detail the solution methods to all important problems. The revised second edition incorporates state-of-the-art findings on heat and mass transfer correlations. The book will be useful not only to upper- and graduate-level students, but also to practicing scientists and engineers. Many worked-out examples and numerous exercises with their solutions will facilitate learning and understanding, and an appendix includes data on key properties of important substances.
Cellular Design For Laser Freeform Fabrication
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Author : Olaf Rehme
language : en
Publisher: Cuvillier Verlag
Release Date : 2010-03-18
Cellular Design For Laser Freeform Fabrication written by Olaf Rehme and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03-18 with Technology & Engineering categories.
Cellular materials are spread all across the world. They can be found in nature, e.g. in bone and wood, as well as in engineering applications such as honeycomb sheets and aluminum foams to name but a few. Cellular materials have some unique properties which allow new and innovative applications beyond the scope of solid engineering materials. Especially their low density and therefore their outstanding stiffness-to-weight-ratio is of greatest importance in most applications. Functions of cellular materials could be lightweight structures of high stiffness, damping and absorption of mechanical energy, vibration control, acoustic absorption, heat exchange, filtering and numerous other tasks. Generally, a combination of these tasks in one part exhibits an optimized and therefore innovative overall performance. One recent development in production technologies is the field of Laser Freeform Fabrication (LFF) processes where parts are manufactured by application of thin layers of powder or sometimes liquid material. A laser beam melts and solidifies the material along contour lines and hatch areas according to slices of a corresponding 3D-CAD model. Among these processes the Selective Laser Melting (SLM) technology was advanced based upon the work in this thesis to allow the manufacture of periodic, open-cell lattice structures from engineering materials such as stainless steel, titanium, etc. In contrast to other cellular materials these lattice structures can be of well-defined, nearly arbitrary shape. Due to the layerwise fabrication the SLM process is also capable of creating lattice cores surrounded by solid shells allowing new degrees of geometric freedom in engineering design that was never experienced before in conventional machining. This allows the development of interesting new applications such as medical implants where the main issues are the improvement of osseointegration and realization of physioelastic material properties for an optimized bond between the implant and surrounding tissue. Lattice structures obtained from the SLM process can meet these requirements. This thesis contributes to the understanding of the mechanical properties of the new material class of SLM lattice structures. Their future incorporation in engineering designs requires a profound knowledge of failure mechanisms and operational limits. Therefore, a comprehensive summary is given on the state-of-the-art of cellular materials followed by a dedicated analysis on Laser Freeform Fabrication and an in-depth validation of the Selective Laser Melting capabilities. Readers with advanced knowledge on cellular materials or Laser Freeform Fabrication may skip sections 2 or 3, respectively. Next, all process constraints and boundary conditions for the manufacture of SLM lattice structures are elaborated. Then a bilateral approach was chosen to derive scaling laws and optimize the SLM lattice structures for given tasks. Firstly, a theoretical analysis comprises the examination of structural hypotheses for isotropic cellular materials before a generalized theory is developed for anisotropic SLM lattice structures. Different cubic, polyhedral and rhombic cell types are evaluated towards their producibility. Some of these cell types are preselected and are subject to numerical analysis where their mechanical properties are derived on the basis of the space framework theory. Secondly, an extensive experimental evaluation of test specimens is given. This includes examinations of the properties of SLM solids, the producibility of SLM lattice structures in terms of dimensions and testing of their mechanical properties such as strength and elasticity in compression, tension and shear load. The test procedures are divided in three stages. The first stage comprises the examination of the specific strength in dependence of the cell type to narrow down few optimum cell types for different applications. In the second and third stage these cell types are investigated towards their elasticity and strength in dependence of the cell size. Finally, this thesis concludes with scaling laws provided in accordance with the theoretical and experimental results. Opposed to simple power laws used for cellular materials these newly developed scaling laws consider leaps in properties at higher, so-called critical relative densities which can be obtained from SLM due to its high degree of design freedom. At the critical relative density SLM lattice structures cease being frameworks and become rather solids with pores. For future applications these scaling laws can be applied by design engineers to match particular requirements that can only be fulfilled by Laser Freeform Fabrication and its degrees of freedom in design. For the sake of completeness some sample applications in the field of medical implants are given in this thesis, which involve these scaling laws.
Particle Packing Characteristics
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Author : Randall M. German
language : en
Publisher:
Release Date : 1989
Particle Packing Characteristics written by Randall M. German and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Compacting categories.
Polymer Processing
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Author : Tim A. Osswald
language : en
Publisher:
Release Date : 2006
Polymer Processing written by Tim A. Osswald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Polymerization categories.