Thermal Study Of Laser Assisted Machining Of Silicon Nitride

Download Thermal Study Of Laser Assisted Machining Of Silicon Nitride full books in PDF, epub, and Kindle. Read online Thermal Study Of Laser Assisted Machining Of Silicon Nitride ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Thermal Study of Laser-assisted Machining of Silicon Nitride

Author : Sepehr Omidi
Publisher :
ISBN 13 : 9781339455990
Total Pages : 86 pages
Book Rating : 4.4/5 (559 download)

DOWNLOAD NOW!

Book Synopsis Thermal Study of Laser-assisted Machining of Silicon Nitride by : Sepehr Omidi

Download or read book Thermal Study of Laser-assisted Machining of Silicon Nitride written by Sepehr Omidi and published by . This book was released on 2015 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decades Laser Assisted Machining (LAM) of hard materials has grown into a viable solution for the manufacturing industry. Interest in the machining of ceramics has grown due to the possibilities of LAM reducing tool wear and increasing productivity. The concept is based on heating the ceramic material into a soft phase that makes it much easier to machine. The other advantage this technology has over traditional grinding is that is possible to make complex shapes and even machine threads. While there has been research in LAM of ceramics such as Silicon Nitride, Zirconia, Alumina it often lacks comprehensive analysis for a particular laser source. In order for industry to adopt such a technology an optimized approach to providing results on ceramics is required. A few years ago as a result of ongoing research at NIU the commercial technology Easy to Machine Hard Materials (EMHM(TM)) was developed to address this issue. While research of Silicon Nitride, Zirconia, Alumina and Cemented Carbide are ongoing via EMHM the thrust of this research will be to provide a comprehensive approach and reduce the time required to optimize parameters for machining ceramics. The main issue to address for productivity in industry (when machining) is how to minimize tool wear (so tools last longer) while removing as much material as quickly as possible. This will obviously vary based on material and energy available. To experimentally carry all this work out would require a vast amount of resources and time. As such this proposal discusses the development of an easy to use ANSYS simulation program that will enable the user to see the surface temperature (which can translate to tool life) based on the feed rate, depth of cut, laser power and spindle speed. There are complex thermo-mechanical forces at play and so an optimized program is required to improve throughput of the analysis. We will develop the first generation ANSYS simulation which will help us verify experimental work we have done with the materials that have been researched via EMHM(TM).

Theoretical Study of Laser-assisted Machining on Silicon Nitride Hollow Ceramic Cylinder Using Finite Element Method

Author : Mohammed Mudassar Hussain Ansari
Publisher :
ISBN 13 : 9780438855199
Total Pages : 57 pages
Book Rating : 4.8/5 (551 download)

DOWNLOAD NOW!

Book Synopsis Theoretical Study of Laser-assisted Machining on Silicon Nitride Hollow Ceramic Cylinder Using Finite Element Method by : Mohammed Mudassar Hussain Ansari

Download or read book Theoretical Study of Laser-assisted Machining on Silicon Nitride Hollow Ceramic Cylinder Using Finite Element Method written by Mohammed Mudassar Hussain Ansari and published by . This book was released on 2018 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most commonly used technique for machining ceramics is diamond grinding. It accounts for up to 75% of the manufacturing costs resulting in high cost of the product. An LED bulb offering increased brightness, energy saving and long life by using ceramic integration to LED chips costs around 10 times to a normal LED bulb. Complex geometries used in electronics, medical surgeries, aerospace, and automobile industries require the use of costly molds or powder metallurgy for low batch production which does not justify the cost. Laser Assisted Machining (LAM) is a process that uses a laser to locally heat the surface of a component (made of ceramic), making it more ductile and machinable using conventional machine tools. Recent studies have shown that LAM gives improved material removal rate and surface finishing, and reduces the cost of machining, i.e. around 50% reduction in the manufacturing costs. Physical experiments require the use of advanced instruments and specialized tools making it a difficult and time-consuming process. It is necessary to have a predicting thermal study to help design more efficient physical experiments. In this study, Finite Element Analysis (FEA) has been used to analyze the thermal distribution of a workpiece under rotating and translating moving heat source. In LAM, there are many variables that greatly affect the temperature, such as laser size, laser power, translational velocity, etc. Extensive research has been performed on solid cylinders however many new applications such as thermocouple protection tube, cylinder lining, blasting nozzles, bone fusion in surgeries, etc., require application of hollow cylinders. Therefore, this work intends to perform a thermal study on a ceramic tube when a laser beam moving on its outer surface. As the generated heat due to the machining is insignificant compared to the heat created by the laser heat source, this study doesn't consider the mechanical removal of the material. The ceramic chosen for this study is Silicon Nitride as it is widely used due to its excellent wide range of properties making it suitable for all industries. The FEA method and assumptions that will be used on this research has been verified with previous experimental and numerical research on a solid cylinder.

Numerical Modeling and Experimental Investigation of Laser-assisted Machining of Silicon Nitride Ceramics

Author : Xinwei Shen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)

DOWNLOAD NOW!

Book Synopsis Numerical Modeling and Experimental Investigation of Laser-assisted Machining of Silicon Nitride Ceramics by : Xinwei Shen

Download or read book Numerical Modeling and Experimental Investigation of Laser-assisted Machining of Silicon Nitride Ceramics written by Xinwei Shen and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-assisted machining (LAM) is a promising non-conventional machining technique for advanced ceramics. However, the fundamental machining mechanism which governs the LAM process is not well understood so far. Hence, the main objective of this study is to explore the machining mechanism and provide guidance for future LAM operations. In this study, laser-assisted milling (LAMill) of silicon nitride ceramics is focused. Experimental experience reveals that workpiece temperature in LAM of silicon nitride ceramics determines the surface quality of the machined workpiece. Thus, in order to know the thermal features of the workpiece in LAM, the laser-silicon nitride interaction mechanism is investigated via heating experiments. The trends of temperature affected by the key parameters (laser power, laser beam diameter, feed rate, and preheat time) are obtained through a parametric study. Experimental results show that high operating temperature leads to low cutting force, good surface finish, small edge chipping, and low residual stress. The temperature range for brittle-to-ductile transition should be avoided due to the rapid increase of fracture toughness. In order to know the temperature distribution at the cutting zone in the workpiece, a transient three-dimensional thermal model is developed using finite element analysis (FEA) and validated through experiments. Heat generation associated with machining is considered and demonstrated to have little impact on LAM. The model indicates that laser power is one critical parameter for successful operation of LAM. Feed and cutting speed can indirectly affect the operating temperatures. Furthermore, a machining model is established with the distinct element method (or discrete element method, DEM) to simulate the dynamic process of LAM. In the microstructural modeling of a [Beta]-type silicon nitride ceramic, clusters are used to simulate the rod-like grains of the silicon nitride ceramic and parallel bonds act as the intergranular glass phase between grains. The resulting temperature-dependent synthetic materials for LAM are calibrated through the numerical compression, bending and fracture toughness tests. The machining model is also validated through experiments in terms of cutting forces, chip size and depth of subsurface damage.

Experimental and Numerical Investigation of Laser Assisted Milling of Silicon Nitride Ceramics

Author : Budong Yang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (318 download)

DOWNLOAD NOW!

Book Synopsis Experimental and Numerical Investigation of Laser Assisted Milling of Silicon Nitride Ceramics by : Budong Yang

Download or read book Experimental and Numerical Investigation of Laser Assisted Milling of Silicon Nitride Ceramics written by Budong Yang and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study experimentally and numerically investigates laser assisted milling (LAMill) of silicon nitride ceramics. Experiments are conducted to study the machinability of Si3N4 under LAMill. The effects of temperature on cutting forces, tool wear, surface integrity, edge chipping and material removal mechanisms are investigated. It is shown that when temperature increases, cutting force and tool wear are significantly decreased, surface integrity is improved, chip size is increased and material removal demonstrates more plastic characteristics. The mechanisms of edge chipping at elevated temperature are investigated theoretically and experimentally. When temperature is above the softening point and below the brittle/ductile transition temperature, the mechanism is mainly through softening. When temperature is above the brittle/ductile transition temperature, toughening mechanism contributes significantly to the reduced edge chipping. The coupled effect of softening and toughening mechanisms shows that temperature range between 1200 to 1400°C has the most significant effect to reduce edge chipping. Distinct element method (DEM) is applied to simulate the micro-mechanical behavior of Si3N4. First, quantitative relationships between particle level parameters and macro-properties of the bonded particle specimens are obtained, which builds a foundation for simulation of Si3N4. Then, extensive DEM simulations are conducted to model the material removal of machining Si3N4. The simulation results demonstrate that DEM can reproduce the conceptual material removal model summarized from experimental observations, including the initiation and propagation of cracks, chip formation process and material removal mechanisms. It is shown that material removal is mainly realized by propagation of lateral cracks in machining of silicon nitride. At the elevated temperature under laser assisted machining, lateral cracks are easier to propagate to form larger machined chips, there are fewer and smaller median cracks therefore less surface/subsurface damage, and crushing-type material removal is reduced. The material removal at elevated temperature demonstrates more plastic characteristics. The numerical results agree very well with experimental observations. It shows that DEM is a promising method to model the micro-mechanical process of machining Si3N4.

Laser-Assisted Machining

Author : Sandip Kunar
Publisher : John Wiley & Sons
ISBN 13 : 1394213573
Total Pages : 500 pages
Book Rating : 4.3/5 (942 download)

DOWNLOAD NOW!

Book Synopsis Laser-Assisted Machining by : Sandip Kunar

Download or read book Laser-Assisted Machining written by Sandip Kunar and published by John Wiley & Sons. This book was released on 2024-06-05 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: LASER-ASSISTED MACHINING This unique book develops exhaustive engineering perceptions of different laser-assisted techniques, reviews the engineering context of different laser fabrication techniques, and describes the application of laser-assisted fabrication techniques. Lasers are essential in the area of material processing because they can produce coherent beams with little divergence. The fabrication process known as surface cladding includes joining (soldering, welding), material removal (laser-aided drilling, cutting, etc.), deformation (extrusion, bending), and material addition. Some remarkable advantages of laser-assisted material development include faster processing rates and preservation of essential alloying components. However, the lack of widespread understanding of various material phenomena and how laser parameters affect them prevents the technology from being widely accepted on an industrial scale. Among the subjects Laser-Assisted Machining covers include high-powered lasers in material processing applications, laser-based joining of metallic and non-metallic materials, direct laser cladding, laser surface processing, laser micro and nano processing, emerging laser materials processing techniques, solid-state lasers, laser cutting, drilling and piercing, laser welding, laser bending or forming, laser cleaning, laser automation and in-process sensing, femtosecond laser micromachining, laser-assisted micro-milling/grinding, laser-assisted jet electrochemical micro-machining, laser-assisted water jet micro-machining, hybrid laser-electrochemical micromachining process, quill and nonreciprocal ultrafast laser writing, laser surface engineering, ultrashort pulsed laser surface texturing, laser interference patterning systems, laser interference lithography, laser-guided discharge texturing. Audience The book will be used by researchers in the fields of manufacturing technology and materials science as well as engineers and high-level technicians for a better understanding of various innovative and novel techniques to cope with the need of micromachining, as well as microfabrication industries for successful implementation of microproduct manufacturing.

Laser Machining and Its Thermal Effects on Silicon Nitride and Steel

Author : Aloke K. Ray
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (338 download)

DOWNLOAD NOW!

Book Synopsis Laser Machining and Its Thermal Effects on Silicon Nitride and Steel by : Aloke K. Ray

Download or read book Laser Machining and Its Thermal Effects on Silicon Nitride and Steel written by Aloke K. Ray and published by . This book was released on 1995 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the 36th International MATADOR Conference

Author : Srichand Hinduja
Publisher : Springer Science & Business Media
ISBN 13 : 1849964327
Total Pages : 581 pages
Book Rating : 4.8/5 (499 download)

DOWNLOAD NOW!

Book Synopsis Proceedings of the 36th International MATADOR Conference by : Srichand Hinduja

Download or read book Proceedings of the 36th International MATADOR Conference written by Srichand Hinduja and published by Springer Science & Business Media. This book was released on 2010-08-05 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented here are 130 refereed papers given at the 36th MATADOR Conference held at The University of Manchester in July 2010. The MATADOR series of conferences covers the topics of Manufacturing Automation and Systems Technology, Applications, Design, Organisation and Management, and Research. The proceedings of this Conference contain original papers contributed by researchers from many countries on different continents. The papers cover the principles, techniques and applications in aerospace, automotive, biomedical, energy, consumable goods and process industries. The papers in this volume reflect: • the importance of manufacturing to international wealth creation; • the emerging fields of micro- and nano-manufacture; • the increasing trend towards the fabrication of parts using lasers; • the growing demand for precision engineering and part inspection techniques; and • the changing trends in manufacturing within a global environment.

An Experimental Study of Laser Assisted Milling of Silicon Nitride Ceramic

Author : Shuting Lei PhD
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (961 download)

DOWNLOAD NOW!

Book Synopsis An Experimental Study of Laser Assisted Milling of Silicon Nitride Ceramic by : Shuting Lei PhD

Download or read book An Experimental Study of Laser Assisted Milling of Silicon Nitride Ceramic written by Shuting Lei PhD and published by . This book was released on 2000 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hybrid Machining

Author : Xichun Luo
Publisher : Academic Press
ISBN 13 : 0128131136
Total Pages : 328 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!

Book Synopsis Hybrid Machining by : Xichun Luo

Download or read book Hybrid Machining written by Xichun Luo and published by Academic Press. This book was released on 2018-06-27 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Machining: Theory, Methods, and Case Studies covers the scientific fundamentals, techniques, applications and real-world descriptions of emerging hybrid machining technology. This field is advancing rapidly in industrial and academic contexts, creating a great need for the fundamental and technical guidance that this book provides. The book includes discussions of basic concepts, process design principles, standard hybrid machining processes, multi-scale modeling approaches, design, on-machine metrology and work handling systems. Readers interested in manufacturing systems, product design or machining technology will find this one-stop guide to hybrid machining the ideal reference. Includes tables of recommended processing parameters for key engineering materials/products for each hybrid machining process Provides case studies covering real industrial applications Explains how to use multiscale modeling for hybrid machining

Mechanical and Electrical Technology IV

Author : Mohamed Othman
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038133159
Total Pages : 3000 pages
Book Rating : 4.0/5 (381 download)

DOWNLOAD NOW!

Book Synopsis Mechanical and Electrical Technology IV by : Mohamed Othman

Download or read book Mechanical and Electrical Technology IV written by Mohamed Othman and published by Trans Tech Publications Ltd. This book was released on 2012-11-29 with total page 3000 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the 4th International Conference on Mechanical and Electrical Technology (ICMET 2012), held during the 24 to 26th July 2012 in Kuala Lumpur, Malaysia, take the form of 614 peer-reviewed papers grouped as follows: Materials Engineering; Applied Mechanics and Mechanical Engineering; Electrotechnics and Electrical Machines; Energy and Power Engineering; Measurements, Monitoring and Sensors; Electronic and Radio Engineering; Computer-Aided Design and Technology; Control and Automation; Manufacturing Processes and Technology.

Laser-assisted Micro End Milling

Author : Yongho Jeon
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (891 download)

DOWNLOAD NOW!

Book Synopsis Laser-assisted Micro End Milling by : Yongho Jeon

Download or read book Laser-assisted Micro End Milling written by Yongho Jeon and published by . This book was released on 2008 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Machining of Ceramics and Composites

Author : Jahanmir
Publisher : CRC Press
ISBN 13 : 9780824701789
Total Pages : 728 pages
Book Rating : 4.7/5 (17 download)

DOWNLOAD NOW!

Book Synopsis Machining of Ceramics and Composites by : Jahanmir

Download or read book Machining of Ceramics and Composites written by Jahanmir and published by CRC Press. This book was released on 1999-01-04 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting modern advances in the machining of ceramics and composites, this work offers broadly based, fundamental information for selecting the appropriate machining processes and parameters, developing successful manufacturing strategies, and designing novel machining systems. It focuses on scientific and engineering developments affecting the present and future of machining processes.

Comprehensive Materials Processing

Author :
Publisher : Newnes
ISBN 13 : 0080965334
Total Pages : 5485 pages
Book Rating : 4.0/5 (89 download)

DOWNLOAD NOW!

Book Synopsis Comprehensive Materials Processing by :

Download or read book Comprehensive Materials Processing written by and published by Newnes. This book was released on 2014-04-07 with total page 5485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Materials Processing, Thirteen Volume Set provides students and professionals with a one-stop resource consolidating and enhancing the literature of the materials processing and manufacturing universe. It provides authoritative analysis of all processes, technologies, and techniques for converting industrial materials from a raw state into finished parts or products. Assisting scientists and engineers in the selection, design, and use of materials, whether in the lab or in industry, it matches the adaptive complexity of emergent materials and processing technologies. Extensive traditional article-level academic discussion of core theories and applications is supplemented by applied case studies and advanced multimedia features. Coverage encompasses the general categories of solidification, powder, deposition, and deformation processing, and includes discussion on plant and tool design, analysis and characterization of processing techniques, high-temperatures studies, and the influence of process scale on component characteristics and behavior. Authored and reviewed by world-class academic and industrial specialists in each subject field Practical tools such as integrated case studies, user-defined process schemata, and multimedia modeling and functionality Maximizes research efficiency by collating the most important and established information in one place with integrated applets linking to relevant outside sources

Advanced Manufacturing Technologies

Author : Kapil Gupta
Publisher : Springer
ISBN 13 : 3319560999
Total Pages : 294 pages
Book Rating : 4.3/5 (195 download)

DOWNLOAD NOW!

Book Synopsis Advanced Manufacturing Technologies by : Kapil Gupta

Download or read book Advanced Manufacturing Technologies written by Kapil Gupta and published by Springer. This book was released on 2017-04-29 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides details and collective information on working principle, process mechanism, salient features, and unique applications of various advanced manufacturing techniques and processes belong. The book is divided in three sessions covering modern machining methods, advanced repair and joining techniques and, finally, sustainable manufacturing. The latest trends and research aspects of those fields are highlighted.

Intelligent Energy Field Manufacturing

Author : Wenwu Zhang
Publisher : CRC Press
ISBN 13 : 1351834649
Total Pages : 987 pages
Book Rating : 4.3/5 (518 download)

DOWNLOAD NOW!

Book Synopsis Intelligent Energy Field Manufacturing by : Wenwu Zhang

Download or read book Intelligent Energy Field Manufacturing written by Wenwu Zhang and published by CRC Press. This book was released on 2018-10-03 with total page 987 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by prominent researchers and with contributions from experts in their individual areas, Intelligent Energy Field Manufacturing: Interdisciplinary Process Innovations explores a new philosophy of engineering. An in-depth introduction to Intelligent Energy Field Manufacturing (EFM), this book explores a fresh engineering methodology that not only integrates but goes beyond methodologies such as Design for Six Sigma, Lean Manufacturing, Concurrent Engineering, TRIZ, green and sustainable manufacturing, and more. This book gives a systematic introduction to classic non-mechanical manufacturing processes as well as offering big pictures of some technical frontiers in modern engineering. The book suggests that any manufacturing process is actually a process of injecting human intelligence into the interaction between material and the various energy fields in order to transfer the material into desired configurations. It discusses technological innovation, dynamic M-PIE flows, the generalities of energy fields, logic functional materials and intelligence, the open scheme of intelligent EFM implementation, and the principles of intelligent EFM. The book takes a highly interdisciplinary approach that includes research frontiers such as micro/nano fabrication, high strain rate processes, laser shock forming, materials science and engineering, bioengineering, etc., in addition to a detailed treatment of the so called "non-traditional" manufacturing processes, which covers waterjet machining, laser material processing, ultrasonic material processing, EDM/ECM, etc. Filled with illustrative pictures, figures, and tables that make technical materials more absorbable, the book cuts across multiple engineering disciplines. The majority of books in this area report the facts of proven knowledge, while the behind-the-scenes thinking is usually neglected. This book examines the big picture of manufacturing in depth before diving into the deta

Understanding Laser Superheating in Lam of Silicon Nitride

Author : SriHarsha Panuganti
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783838395005
Total Pages : 108 pages
Book Rating : 4.3/5 (95 download)

DOWNLOAD NOW!

Book Synopsis Understanding Laser Superheating in Lam of Silicon Nitride by : SriHarsha Panuganti

Download or read book Understanding Laser Superheating in Lam of Silicon Nitride written by SriHarsha Panuganti and published by LAP Lambert Academic Publishing. This book was released on 2010-10 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of advanced ceramics like silicon nitride can be found in many high-tech engineering applications in various fields such as aerospace, defense and automotive. In order for these ceramics to become more prevalent in industry, development of better and cheaper methods of manufacturing ceramic parts is essential. Laser-assisted machining (LAM) of ceramics is one tool that can enable this growth while maintaining reasonable costs of manufacturing parts in small quantities. This book contains the research conducted on LAM of ceramics that helps develop a complete understanding of various laser and machining parameters in LAM of ceramics, and makes some important conclusions that help in continuing the research for a fully developed LAM of ceramics system. A fiber-coupled diode laser - which has the highest wall plug efficiencies and offers more flexibility, cheaper equipment costs, and smaller footprint than others - has been used.

Machining, Joining and Modifications of Advanced Materials

Author : Andreas Öchsner
Publisher : Springer
ISBN 13 : 981101082X
Total Pages : 272 pages
Book Rating : 4.8/5 (11 download)

DOWNLOAD NOW!

Book Synopsis Machining, Joining and Modifications of Advanced Materials by : Andreas Öchsner

Download or read book Machining, Joining and Modifications of Advanced Materials written by Andreas Öchsner and published by Springer. This book was released on 2016-06-23 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest advances in mechanical and materials engineering applied to the machining, joining and modification of modern engineering materials. The contributions cover the classical fields of casting, forming and injection moulding as representative manufacturing methods, whereas additive manufacturing methods (rapid prototyping and laser sintering) are treated as more innovative and recent technologies that are paving the way for the manufacturing of shapes and features that traditional methods are unable to deliver. The book also explores water jet cutting as an innovative cutting technology that avoids the heat build-up typical of classical mechanical cutting. It introduces readers to laser cutting as an alternative technology for the separation of materials, and to classical bonding and friction stir welding approaches in the context of joining technologies. In many cases, forming and machining technologies require additional post-treatment to achieve the required level of surface quality or to furnish a protective layer. Accordingly, sections on laser treatment, shot peening and the production of protective layers round out the book’s coverage.