Download or read book Fusion s lective par laser de lits de poudre written by Pierre Vinson and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La fabrication directe et additive regroupe un ensemble de technologies de mise en forme des matériaux en rupture avec les procédés conventionnels. L'industrie aéronautique et aérospatiale s'intéresse fortement à ces nouveaux procédés, dont la fusion sélective par laser de lits de poudre métallique (SLM). Cette thèse présentera les enjeux de la fabrication additive ainsi que certains procédés. Une étude bibliographique a été menée sur deux alliages aéronautiques utilisés dans ces travaux : l'alliage de titane TA6V et le superalliage base nickel Nimonic 263. Les travaux présentés dans ce rapport comprennent l'étude de la poudre métallique brute d'atomisation (morphologie, granulométrie, composition chimique). D'autre part, l'étude de la recyclabilité de la poudre utilisée en SLM est présentée pour le TA6V, tant en ce qui concerne l'évolution de la poudre elle-même que celle des propriétés mécaniques des pièces qui en sont issues. Par ailleurs ce travail traite d'un modèle de consolidation du lit de poudre permettant également d'évaluer la productivité du procédé. Enfin, une étude paramétrique et thermique menée sur le Nimonic 263 en vue de l'établissement d'une solution de contrôle procédé est présentée.

Download or read book Laser Based Additive Manufacturing written by Narendra B. Dahotre and published by John Wiley & Sons. This book was released on 2022-08-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-Based Additive Manufacturing Explore laser-based additive manufacturing processes via multi-scale modeling and computer simulation In Laser-Based Additive Manufacturing: Modeling, Simulation, and Experiments, a distinguished team of researchers delivers an incisive framework for understanding materials processing using laser-based additive manufacturing (LAM). The book describes the use of computational modeling and simulation to explore and describe the LAM technique, to improve the compositional, phase, and microstructural evolution of the material, and to enhance the mechanical, chemical, and functional properties of the manufactured components. The accomplished authors combine a comprehensive overview of multi-scale modeling and simulation with experimental and practical observations, offering a systematic review of laser-material interactions in advanced LAM processes. They also describe the real-world applications of LAM, including component processing and surface functionalization. In addition to explorations of residual stresses, three-dimensional defects, and surface physical texture in LAM, readers will also find: A thorough introduction to additive manufacturing (AM), including the advantages of AM over conventional manufacturing and the challenges involved with using the technology A comprehensive exploration of computation materials science, including length- and time-scales in materials modeling and the current state of computational modeling in LAM Practical discussions of laser-material interaction in LAM, including the conversion of light energy to heat, modes of heat dissipation, and the dynamics of the melt-pool In-depth examinations of the microstructural and mechanical aspects of LAM integrated with modeling Perfect for materials scientists, mechanical engineers, and physicists, Laser-Based Additive Manufacturing: Modeling, Simulation, and Experiments is perfect for anyone seeking an insightful treatment of this cutting-edge technology in the areas of alloys, ceramics, and composites.

Download or read book Laser Powder Bed Fusion of Additive Manufacturing Technology written by Di Wang and published by Springer Nature. This book was released on 2023-10-06 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically introduces the powder bed laser melting technology and its application and summarizes the author's team's experience in scientific research, engineering development, and data accumulation in recent 15 years. It includes in-depth theoretical analysis and a lot of engineering experience in equipment debugging, process development, and material testing. The book takes the powder bed laser melting technology as the object and divides the content into 15 chapters. It is used as technical learning materials for researchers and engineering development personnel engaged in metal 3D printing.

Download or read book Laser Additive Manufacturing written by Milan Brandt and published by Woodhead Publishing. This book was released on 2016-09-01 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Additive Manufacturing: Materials, Design, Technologies, and Applications provides the latest information on this highly efficient method of layer-based manufacturing using metals, plastics, or composite materials. The technology is particularly suitable for the production of complex components with high precision for a range of industries, including aerospace, automotive, and medical engineering. This book provides a comprehensive review of the technology and its range of applications. Part One looks at materials suitable for laser AM processes, with Part Two discussing design strategies for AM. Parts Three and Four review the most widely-used AM technique, powder bed fusion (PBF) and discuss other AM techniques, such as directed energy deposition, sheet lamination, jetting techniques, extrusion techniques, and vat photopolymerization. The final section explores the range of applications of laser AM. Provides a comprehensive one-volume overview of advances in laser additive manufacturing Presents detailed coverage of the latest techniques used for laser additive manufacturing Reviews both established and emerging areas of application

Download or read book Fundamentals of Laser Powder Bed Fusion of Metals written by Igor Yadroitsev and published by Elsevier. This book was released on 2021-05-23 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser powder bed fusion of metals is a technology that makes use of a laser beam to selectively melt metal powder layer-by-layer in order to fabricate complex geometries in high performance materials. The technology is currently transforming aerospace and biomedical manufacturing and its adoption is widening into other industries as well, including automotive, energy, and traditional manufacturing. With an increase in design freedom brought to bear by additive manufacturing, new opportunities are emerging for designs not possible previously and in material systems that now provide sufficient performance to be qualified in end-use mission-critical applications. After decades of research and development, laser powder bed fusion is now enabling a new era of digitally driven manufacturing. Fundamentals of Laser Powder Bed Fusion of Metals will provide the fundamental principles in a broad range of topics relating to metal laser powder bed fusion. The target audience includes new users, focusing on graduate and undergraduate students; however, this book can also serve as a reference for experienced users as well, including senior researchers and engineers in industry. The current best practices are discussed in detail, as well as the limitations, challenges, and potential research and commercial opportunities moving forward. - Presents laser powder bed fusion fundamentals, as well as their inherent challenges - Provides an up-to-date summary of this advancing technology and its potential - Provides a comprehensive textbook for universities, as well as a reference for industry - Acts as quick-reference guide

Download or read book Laser Additive Manufacturing of Metallic Materials and Components written by Dongdong Gu and published by Elsevier. This book was released on 2022-12-07 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Additive Manufacturing of Metallic Materials and Components discusses the current state and future development of laser additive manufacturing technologies, detailing material, structure, process and performance. The book explores the fundamental scientific theories and technical principles behind the elements of laser additive manufacturing, touching upon scientific and technological challenges faced by laser additive manufacturing technology. This book is suitable for those who want to further "understand and "master laser additive manufacturing technology and will expose readers to innovative industrial applications that meet significant demand from aeronautical and astronautical high-end modern industries for low-cost, short-cycle and net-shape manufacturing of structure-function integrated metallic components. With the increasing use of industrial applications, additive manufacturing processes are deepening, with technology continuing to evolve. As new scientific and technological challenges emerge, there is a need for an interdisciplinary and comprehensive discussion of material preparation and forming, structure design and optimization, laser process and its control, microstructure and performance characterization, and innovative industrial applications, hence this book covers these important aspects. - Highlights an integration of material, structure, process and performance for laser additive manufacturing of metallic components to reflect the interdisciplinary nature of this technology - Covers cross-scale structure and performance coordination mechanisms, including micro-scale material microstructure control, meso-scale interaction between laser beam and particle matter, and macro-scale precise forming of components and performance control - Explores fundamental scientific theories and technical principles behind laser additive manufacturing processes - Provides innovation elements and strategies for the future sustainable development of additive manufacturing technologies in terms of multi-materials design, novel bio-inspired structure design, tailored printing process with meso-scale monitoring, and high-performance and functionality of printed components

Download or read book Fabrication Additive written by Organisation internationale de normalisation and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Based Additive Manufacturing of Metal Parts written by Linkan Bian and published by CRC Press. This book was released on 2017-08-09 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-Based Additive Manufacturing (LBAM) technologies, hailed by some as the "third industrial revolution," can increase product performance, while reducing time-to-market and manufacturing costs. This book is a comprehensive look at new technologies in LBAM of metal parts, covering topics such as mechanical properties, microstructural features, thermal behavior and solidification, process parameters, optimization and control, uncertainty quantification, and more. The book is aimed at addressing the needs of a diverse cross-section of engineers and professionals.

Download or read book Handbook of Post Processing in Additive Manufacturing written by Gurminder Singh and published by CRC Press. This book was released on 2023-10-04 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Post-Processing in Additive Manufacturing is a key resource on postprocessing treatments available for additive manufactured products. It provides broad coverage of the theory behind emerging technology, material development, functional characterization, and technical details required to investigate novel applications and methods and put them to use. The handbook presents experimental breakthroughs of novel methodologies that treat additively manufactured parts, which are suitable for demanding engineering applications. This handbook emphasizes the various types of post-processing technologies that can effectively eliminate the inferiorities of additively manufactured components. It also provides a collection of key principles, literature, methodologies, experimental results, case studies, and theoretical aspects of the different types of postprocessing techniques, along with different classes of materials and end-applications. This book is an ideal reference for libraries and post-graduate courses as well as the professional market, including, but not limited to manufacturing, mechanical and industrial engineering, and materials science.

Download or read book Additive Manufacturing Processes written by Sanjay Kumar and published by Springer Nature. This book was released on 2020-05-26 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a single-source reference to additive manufacturing, accessible to anyone with a basic background in engineering and materials science. Unlike other books on additive manufacturing that include coverages of things such as machine architecture, applications, business and present market conditions, this book focuses on providing comprehensive coverage of currently available additive manufacturing processes. All processes are explained with the help of various, original diagrams, useful for beginners and advanced researchers alike. Provides comprehensive coverages of all current processes available in additive manufacturing; Explains processes with the help of various original diagrams; Explains future process development at the last chapter, providing research outlook; Includes extensive references at the end of each chapter for further reading of original research.

Download or read book Post processing Techniques for Additive Manufacturing written by Zafar Alam and published by CRC Press. This book was released on 2023-07-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text defines and covers different themes of post-processing techniques based on mechanical, chemical/electrochemical, and thermal energy. It will serve as an ideal reference text for senior undergraduate and graduate students in diverse engineering fields including manufacturing, industrial, aerospace, and mechanical. This book: covers the fundamentals and advancements in the post-processing techniques for additive manufacturing; explores methods/techniques for post-processing different types of materials used in additive manufacturing processes; gives insight into the process selection criteria for post-processing of additive manufactured products made from different types of materials; discusses hybrid processes used for post-processing of additive manufacturing parts; and highlights post-processing techniques for properties enhancement. The primary aim of the book is to give the readers a well-informed layout of the different post-processing techniques that range from employing mechanical energy to chemical, electrochemical, and thermal energy to perform the intended task.

Download or read book Laser Additive Manufacturing of High Performance Materials written by Dongdong Gu and published by Springer. This book was released on 2015-04-21 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book entitled “Laser Additive Manufacturing of High-Performance Materials” covers the specific aspects of laser additive manufacturing of high-performance new materials components based on an unconventional materials incremental manufacturing philosophy, in terms of materials design and preparation, process control and optimization and theories of physical and chemical metallurgy. This book describes the capabilities and characteristics of the development of new metallic materials components by laser additive manufacturing process, including nanostructured materials, in situ composite materials, particle reinforced metal matrix composites, etc. The topics presented in this book, similar as laser additive manufacturing technology itself, show a significant interdisciplinary feature, integrating laser technology, materials science, metallurgical engineering and mechanical engineering. This is a book for researchers, students, practicing engineers and manufacturing industry professionals interested in laser additive manufacturing and laser materials processing. Dongdong Gu is a Professor at College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics (NUAA), PR China.

Download or read book Digitalization of design for support structures in laser powder bed fusion of metals written by Katharina Bartsch and published by Springer Nature. This book was released on 2023-02-18 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing is considered a key technology for digital production. However, several barriers towards the broad industrial application exist, e.g. the associated cost and the required experience regarding the manufacturing process. To eradicate these barriers, the complete digitalization of the value creation process is needed. In this thesis, a digital, automated support structuredesign procedure is developed. Topology optimization is used for design rule determination, and the space colonization algorithm is adapted for the automated design. The validity of the procedure is proven experimentally, revealing sufficient mechanical performance alongside cost reduction at medium to large production scales.

Download or read book Metal Powder Based Additive Manufacturing written by Kun Zhou and published by John Wiley & Sons. This book was released on 2023-05-08 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Powder—Based Additive Manufacturing Highly comprehensive resource covering all key aspects of the current developments of metal powder—based additive manufacturing Metal Powder—Based Additive Manufacturing provides valuable knowledge and critical insights regarding the recent advances in various metal powder—based additive manufacturing techniques. This book also reviews typical powder preparation processes and highlights the significance of metal powder—based additive manufacturing for various industrial applications. The key features covered in this book: A rigorous overview of the underlying theories and practical applications of metal powder—based additive manufacturing techniques, including laser powder bed fusion, electron beam melting, laser-based directed energy deposition, and metal binder jetting. An expansive introduction of each technique and its significance pertaining to the printing processes, metallurgical defects, powder materials, equipment, and the microstructures and mechanical properties of the printed parts. A deep exploration of the preparation processes of metal powders for additive manufacturing and the effects of different processes on the powder properties. Comprehensive case studies of parts printed by metal powder—based additive manufacturing for various industrial applications. By providing extensive coverage of relevant concepts in the field of metal powder—based additive manufacturing, this book highlights its essential role in Industry 4.0 and serves as a valuable resource for scientists, engineers, and students in materials science, powder metallurgy, physics, and chemistry. The rich research experience of the authors in additive manufacturing ensures that the readers are provided with both an in-depth understanding and informative technical guidance of metal powder—based additive manufacturing.

Download or read book Theory and Practice of Additive Manufacturing written by Tuhin Mukherjee and published by John Wiley & Sons. This book was released on 2023-09-26 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory and Practice of Additive Manufacturing Discover the ins and outs of additive manufacturing in this student-friendly textbook Also known as 3D printing, additive manufacturing is a process by which layers of material are added to create three-dimensional objects guided by a digital model. It has revolutionized the design and manufacture of customized products, facilitating the rapid, flexible production of a huge range of goods. It promises to revolutionize manufacturing engineering, shorten industrial supply chains, and more. Theory and Practice of Additive Manufacturing provides the first introduction to this subject designed specifically for students. Balancing the underlying theories behind additive manufacturing with concrete applications, it guides readers through basic processes, essential tools and materials, and more. The result is ideal for readers looking to bring additive manufacturing to bear on engineering or industry careers of almost any kind. Theory and Practice of Additive Manufacturing features: Over 100 worked-out example problems Detailed discussion of the emerging digital tools including mechanistic modeling, machine learning, and more Commitment to pedagogy and reinforcement geared toward student learning outcomes Theory and Practice of Additive Manufacturing is ideal for undergraduate and graduate students and instructors in introductory additive manufacturing courses, as well as practicing engineers and researchers working in industries that use additive manufacturing technologies, including aerospace, automotive, and consumer goods.

Download or read book Additive Manufacturing of Mechatronic Integrated Devices written by Friedrich Wilhelm Proes and published by Springer Nature. This book was released on 2022-09-23 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation a new process chain for the Additive Manufacturing of Mechatronic Integrated Devices (AMMID) is described, which provides a new way to manufacture 3-dimensional electronic devices based on the selective laser sintering (SLS) process using laser direct structuring (LDS) and metallization. The AMMID process chain meets the rising demand for highly functionalized parts, increasing individualization and shortening development cycles for electronic products. The development for this process chain is based on an extensive literature review that indicates that an SLS-based process chain has great potential to produce 3-dimensional electronic devices with properties and with the future perspective of being suitable for an individualized mass production. The biggest, initial, technical hurdle is an unstable SLS process using a conventional LDS additive. The compound of SLS material and LDS additive was analyzed with DSC, which shows that the additive changes the melting behavior of the polymer by reducing the sintering window. A fine metal powder as an alternative additive affects the sintering window less and enables a stable process. To choose a suitable particle size and content for the metal powder an analytical material model is provided, that predicts the additive particle distribution within the material. This material model deepens the understanding of the activation mechanism during laser activation, provides hands-on information for powder preparation and it is applied for the design of the experiment for the development of the process chain with the new material. Preliminary experiments are conducted along with the insights of the material model, which prove that redeposition is the main activation mechanism during laser activation with fine metal powders. Based on this, the process chain is developed, starting with a determination of a suitable additive content. A suitable material composition of a PA12 powder containing 2 wt.% of a copper powder with a mean particle diameter of 3.5 μm was identified. With regard to the laser activation, working laser parameters are developed (working parameter set feasible for all used post-process treatments: PRF = 1 kHz, dh = 25 μm, vs = 25 mm/s, tl = 20ns and P = 1.07 W). In this parameter development it is shown, that only closely located laser spots, enabling interaction of the laser pulses, are capable of activating the surface, while single laser pulses under applied conditions are not. By adding a post-process treatment as additional process step into the process chain, the quality of metallization and the size of design features could be improved. Chemical smoothing resulted in a complete reduction of unwanted metallization on non-activated surfaces. Conductor tracks with the minimal width of 300 μm could be realized. The process chain could be applied to demonstrator parts such as a drone housing and a PSU panel of an aircraft. Thus, this dissertation has raised the technology readiness level (TRL) from TRL2 to TRL6. Finally, an economic consideration provides insights on the cost structure of parts produced with the AMMID process. A comparison of AMMID and injection molding shows economic viability for small lot sizes, 400 parts in case of the drone housing and 150 parts in case of the PSU panel. Finally, the analysis of the cost structure gives advice which future developments in the process chain have the greatest effect on costs and provides prioritization.

Download or read book The Bernardine Biographers written by Stanley St. Clair Morrison and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: