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Author : Yu-Ning Liu
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.3/5 (91 download)
Download or read book Thermal Analysis of Multiple Beam Laser Welding written by Yu-Ning Liu and published by . This book was released on 1995 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Michael Dowden
Publisher : CRC Press
ISBN 13 : 1420035622
Total Pages : 305 pages
Book Rating : 4.4/5 (2 download)
Download or read book The Mathematics of Thermal Modeling written by John Michael Dowden and published by CRC Press. This book was released on 2001-05-24 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of lasers for various applications in materials processing has grown rapidly in recent years. Lasers are by nature particularly well suited to automation, but to ensure repeatability and reliability, the engineers employing them must not simply rely on numerical analysis software. They must have a firm grasp on the physical principles invol
Author : Victor A. Karkhin
Publisher : Springer
ISBN 13 : 9811359652
Total Pages : 478 pages
Book Rating : 4.8/5 (113 download)
Download or read book Thermal Processes in Welding written by Victor A. Karkhin and published by Springer. This book was released on 2019-05-15 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes and systemizes analytical and numerical solutions for a broad range of instantaneous and continuous, stationary and moving, concentrated and distributed, 1D, 2D and 3D heat sources in semi-infinite bodies, thick plane layers, thin plates and cylinders under various boundary conditions. The analytical solutions were mainly obtained by the superimposing principle for various parts of the proposed 1D, 2D and 3D heat sources and based on the assumption that only heat conduction plays a major role in the thermal analysis of welds. Other complex effects of heat transfer in weld phenomena are incorporated in the solutions by means of various geometrical and energetic parameters of the heat source. The book is divided into 13 chapters. Chapter 1 briefly reviews various welding processes and the energy characteristics of welding heat sources, while Chapter 2 covers the main thermophysical properties of the most commonly used alloys. Chapter 3 describes the physical fundamentals of heat conduction during welding, and Chapter 4 introduces several useful methods for solving the problem of heat conduction in welding. Chapters 5 and 6 focus on the derivation of analytical solutions for many types of heat sources in semi-infinite bodies, thick plane layers, thin plates and cylinders under various boundary conditions. The heat sources can be instantaneous or continuous, stationary or moving, concentrated or distributed (1D, 2D or 3D). In Chapter 7 the temperature field under programmed heat input (pulsed power sources and weaving sources) is analyzed. In turn, Chapters 8 and 9 cover the thermal cycle, melting and solidification of the base metal. Heating and melting of filler metal are considered in Chapter 10. Chapter 11 addresses the formulation and solution of inverse heat conduction problems using zero-, first- and second-order algorithms, while Chapter 12 focuses on applying the solutions developed here to the optimization of welding conditions. In addition, case studies confirm the usefulness and feasibility of the respective solutions. Lastly, Chapter 13 demonstrates the prediction of local microstructure and mechanical properties of welded joint metals, while taking into account their thermal cycle. The book is intended for all researches, welding engineers, mechanical design engineers, research engineers and postgraduate students who deal with problems such as microstructure modeling of welds, analysis of the mechanical properties of welded metals, weldability, residual stresses and distortions, optimization of welding and allied processes (prewelding heating, cladding, thermal cutting, additive technologies, etc.). It also offers a useful reference guide for software engineers who are interested in writing application software for simulating welding processes, microstructure modeling, residual stress analysis of welds, and for robotic-welding control systems.
Download or read book Finite Element Analysis of Laser Welding Induced Thermal Shock written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thermal and mechanical responses of a weldment involving a girth fillet weld are approximated by the finite element method (FEM) and an isothermal ring heat source. Approximately 0.1 ms after the application of the ring heat source, the radial traction at an analytically predicted depth and location within the weldment exceeds the failure strength in tension, followed by fracture. Swelling and elongation of the weldment are in evidence in the general vicinity of the ring heat source. Loading characteristics of a corrective fixture are applied to control the radial traction and dilational motion and to gain design/processing knowledge. The analytical model yields an insight into the physical behavior of the subject weldment during CO2 laser beam welding (LBW).
Author : S Katayama
Publisher : Elsevier
ISBN 13 : 0857098772
Total Pages : 685 pages
Book Rating : 4.8/5 (57 download)
Download or read book Handbook of Laser Welding Technologies written by S Katayama and published by Elsevier. This book was released on 2013-06-30 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser welding is a rapidly developing and versatile technology which has found increasing applications in industry and manufacturing. It allows the precision welding of small and hard-to-reach areas, and is particularly suitable for operation under computer or robotic control. The Handbook of laser welding technologies reviews the latest developments in the field and how they can be used across a variety of applications. Part one provides an introduction to the fundamentals of laser welding before moving on to explore developments in established technologies including CO2 laser welding, disk laser welding and laser micro welding technology. Part two highlights laser welding technologies for various materials including aluminium and titanium alloys, plastics and glass. Part three focuses on developments in emerging laser welding technologies with chapters on the applications of robotics in laser welding and developments in the modelling and simulation of laser and hybrid laser welding. Finally, part four explores the applications of laser welding in the automotive, railway and shipbuilding industries. The Handbook of laser welding technologies is a technical resource for researchers and engineers using laser welding technologies, professionals requiring an understanding of laser welding techniques and academics interested in the field. Provides an introduction to the fundamentals of laser welding including characteristics, welding defects and evolution of laser welding Discusses developments in a number of techniques including disk, conduction and laser micro welding Focusses on technologies for particular materials such as light metal alloys, plastics and glass
Author : John Michael Dowden
Publisher : CRC Press
ISBN 13 : 1040097006
Total Pages : 275 pages
Book Rating : 4.0/5 (4 download)
Download or read book The Mathematics of Thermal Modeling written by John Michael Dowden and published by CRC Press. This book was released on 2024-10-02 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mathematics of Thermal Modeling, Second Edition, provides an introduction to the basics of the mathematics and physics needed to understand and use the physical principles employed in constructing models of a number of aspects of thermal modeling in industrial processes, notably laser welding; most of the techniques are applicable to many other technological processes, however. The book demonstrates how insight can be gained from mathematical enquiry at a simple level and helps workers understand the way in which more sophisticated models can be constructed. Some necessary but less familiar mathematical techniques are explained in greater detail than before and some discussion of wave-like features in welds is now included. An understanding will be gained of the importance of studying the interaction of multiple features. The book is equally suitable for engineers and material scientists at the Master's or first-year PhD level at university, to similar students with a background in mathematics or physics who are new to laser or industrial technology, or for research workers coming to mathematical modeling of industrial thermal processes for the first time, whatever stage they have reached in their career development.
Author : E. A. Metzbower
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (742 download)
Download or read book Thermal Analysis and Microhardness Mapping in Hybrid Laser Welds in a Structural Steel written by E. A. Metzbower and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid welding, the combination of laser and arc welding, is being heavily investigated for potential applications in the fabrication of structural steel components. The hybrid process is an alternative to autogenous laser welding that requires good fit-up of the parts. With the hybrid process, the addition of filler metal alters the weld pass chemistry and fills any gaps that may occur. In some applications, the fit-up of parts is only part of the issue for laser welding. In some structural steel components, the chemistry of the base metal when autogenously laser welded can result in weldments (weld metal and heat-affected zone (HAZ)) that have high hardness values. This indirectly indicates that the weld metal is brittle and not suitable for certain applications. The hardness values of the weldment have been used as an acceptance criteria for certain industrial applications. The use of hybrid welding may address the hardness issue. The addition of filler metal through a gas metal arc (GMAW) based hybrid process decrease the cooling rate in the HAZ therefore improving mechanical properties. These improvements can often be detected by microhardness profiles. While traditional hardness profiles tabulate hardness in a few regions of the weld, hardness mapping better profiles the hardness trends in the weldment. This paper will present welding results for the hybrid structural welding of a structural carbon steel using a 4 kW Nd:YAG based hybrid laser system. The data will center on the thermal response of the steel to the welding process, on the hardness mapping of the weldments and how the heat input altered the hardness and the mechanical properties of the welds.
Author : F O Olsen
Publisher : Elsevier
ISBN 13 : 1845696522
Total Pages : 336 pages
Book Rating : 4.8/5 (456 download)
Download or read book Hybrid Laser-Arc Welding written by F O Olsen and published by Elsevier. This book was released on 2009-06-26 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid laser-arc welding (HLAW) is a combination of laser welding with arc welding that overcomes many of the shortfalls of both processes. This important book gives a comprehensive account of hybrid laser-arc welding technology and applications. The first part of the book reviews the characteristics of the process, including the properties of joints produced by hybrid laser-arc welding and ways of assessing weld quality. Part two discusses applications of the process to such metals as magnesium alloys, aluminium and steel as well as the use of hybrid laser-arc welding in such sectors as ship building and the automotive industry. With its distinguished editor and international team of contributors, Hybrid laser-arc welding is a valuable source of reference for all those using this important welding technology. Reviews arc and laser welding including both advantages and disadvantages of the hybrid laser-arc approach Explores the characteristics of the process including the properties of joints produced by hybrid laser-arc welding and ways of assessing weld quality Examines applications of the process including magnesium alloys, aluminium and steel with specific focus on applications in the shipbuilding and automotive industries
Author :
Publisher :
ISBN 13 :
Total Pages : 632 pages
Book Rating : 4.X/5 (6 download)
Download or read book Previews of Heat and Mass Transfer written by and published by . This book was released on 1996 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elijah Kannatey-Asibu, Jr.
Publisher : John Wiley & Sons
ISBN 13 : 0470459190
Total Pages : 849 pages
Book Rating : 4.4/5 (74 download)
Download or read book Principles of Laser Materials Processing written by Elijah Kannatey-Asibu, Jr. and published by John Wiley & Sons. This book was released on 2009-04-22 with total page 849 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage of the most recent advancements and applications in laser materials processing This book provides state-of-the-art coverage of the field of laser materials processing, from fundamentals to applications to the latest research topics. The content is divided into three succinct parts: Principles of laser engineering-an introduction to the basic concepts and characteristics of lasers, design of their components, and beam delivery Engineering background&-a review of engineering concepts needed to analyze different processes: thermal analysis and fluid flow; solidification of molten metal; and residual stresses that evolve during processes Laser materials processing-a rigorous and detailed treatment of laser materials processing and its principle applications, including laser cutting and drilling, welding, surface modification, laser forming, and rapid prototyping Each chapter includes an outline, summary, and example sets to help readers reinforce their understanding of the material. This book is designed to prepare graduate students who will be entering industry; researchers interested in initiating a research program; and practicing engineers who need to stay abreast of the latest developments in this rapidly evolving field.
Author : Shanben Chen
Publisher : Springer
ISBN 13 : 9811053553
Total Pages : 175 pages
Book Rating : 4.8/5 (11 download)
Download or read book Transactions on Intelligent Welding Manufacturing written by Shanben Chen and published by Springer. This book was released on 2017-08-01 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary aim of this volume is to provide researchers and engineers from both academia and industry with up-to-date coverage of recent advances in the fields of robotic welding, intelligent systems and automation. It gathers selected papers from the 2017 International Workshop on Intelligentized Welding Manufacturing (IWIWM’2017), held June 23-26, 2017 in Shanghai, China. The contributions reveal how intelligentized welding manufacturing (IWM) is becoming an inescapable trend, just as intelligentized robotic welding is becoming a key technology. The volume is divided into four main parts: Intelligent Techniques for Robotic Welding, Sensing in Arc Welding Processing, Modeling and Intelligent Control of Welding Processing, and Intelligent Control and its Applications in Engineering.
Author : John Dowden
Publisher : Springer
ISBN 13 : 331956711X
Total Pages : 442 pages
Book Rating : 4.3/5 (195 download)
Download or read book The Theory of Laser Materials Processing written by John Dowden and published by Springer. This book was released on 2017-06-16 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The revised edition of this important reference volume presents an expanded overview of the analytical and numerical approaches employed when exploring and developing modern laser materials processing techniques. The book shows how general principles can be used to obtain insight into laser processes, whether derived from fundamental physical theory or from direct observation of experimental results. The book gives readers an understanding of the strengths and limitations of simple numerical and analytical models that can then be used as the starting-point for more elaborate models of specific practical, theoretical or commercial value. Following an introduction to the mathematical formulation of some relevant classes of physical ideas, the core of the book consists of chapters addressing key applications in detail: cutting, keyhole welding, drilling, arc and hybrid laser-arc welding, hardening, cladding and forming. The second edition includes a new a chapter on glass cutting with lasers, as employed in the display industry. A further addition is a chapter on meta-modelling, whose purpose is to construct fast, simple and reliable models based on appropriate sources of information. It then makes it easy to explore data visually and is a convenient interactive tool for scientists to improve the quality of their models and for developers when designing their processes. As in the first edition, the book ends with an updated introduction to comprehensive numerical simulation. Although the book focuses on laser interactions with materials, many of the principles and methods explored can be applied to thermal modelling in a variety of different fields and at different power levels. It is aimed principally however at academic and industrial researchers and developers in the field of laser technology.
Author : I. Zuev
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (815 download)
Download or read book Analysis of the Dependence of Thermal Efficiency on Laser Welding Conditions written by I. Zuev and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. C. Mills
Publisher : Woodhead Publishing
ISBN 13 : 9780871707536
Total Pages : 288 pages
Book Rating : 4.7/5 (75 download)
Download or read book Recommended Values of Thermophysical Properties for Selected Commercial Alloys written by K. C. Mills and published by Woodhead Publishing. This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Viswanathan Subramanian
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (533 download)
Download or read book Thermal Analysis of Effects of High Intensity Laser Beam on Biological Tissue Using FEM written by Viswanathan Subramanian and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shuili Gong
Publisher : Springer Nature
ISBN 13 : 9811607885
Total Pages : 290 pages
Book Rating : 4.8/5 (116 download)
Download or read book Weld Pool Dynamics in Deep Penetration Laser Welding written by Shuili Gong and published by Springer Nature. This book was released on 2021-04-21 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically describes the weld pool behavior in laser welding and its influencing factors from the perspectives of testing technology, theoretical calculation and process simulation technology, physical state transformation behavior of weld pools, and the impact of technical conditions on the weld pool behavior. The book covers extensive research achievements made in China in this field, some of which represent the latest cutting-edging researches conducted by the authors' research team. These latest research efforts mainly relate to the weld pool behavior of dual-beam laser welding, laser welding with filler wires, full-penetration laser welding of very-thick parts, and laser welding in vacuum and low vacuum conditions. The book is intended for undergraduate, graduate students and researchers who are interested in laser welding.
Author : João Pedro Oliveira
Publisher : MDPI
ISBN 13 : 303928861X
Total Pages : 260 pages
Book Rating : 4.0/5 (392 download)
Download or read book Laser Welding written by João Pedro Oliveira and published by MDPI. This book was released on 2020-05-13 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser welding is a high-energy process used in a wide range of advanced materials to obtain micro- to macro-sized joints in both similar and dissimilar combinations. Moreover, this technique is widely used in several industries, such as automotive, aerospace, and medical industries, as well as in electrical devices. Although laser welding has been used for several decades, significant and exciting innovations often arise from both the process and/or advanced materials side.
