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Author: Suhas Kulkarni Publisher: Hanser ISBN: 9781569905869 Category : Injection molding of plastics Languages : en Pages : 367
Book Description
The book introduces the reader to the concepts of Scientific Molding and Scientific Processing for Injection Molding, geared towards developing a robust, repeatable, and reproducible (3Rs) molding process. The effects of polymer morphology, thermal transitions, drying, and rheology on the injection molding process are explained in detail. The development of a robust molding process is broken down into two sections and is described as the Cosmetic Process and the Dimensional Process. Scientific molding procedures to establish a 3R process are provided. The concept of Design of Experiments (DOEs) for and in injection molding is explained, providing an insight into the cosmetic and dimensional process windows. A plan to release qualified molds into production with troubleshooting tips is also provided. Topics that impact a robust process such as the use of regrind, mold cooling, and venting are also described. Readers will be able to utilize the knowledge gained from the book in their day-to-day operations immediately. The second edition includes a completely new chapter on Quality Concepts, as well as much additional material throughout the book, covering fountain flow, factors affecting post mold shrinkage, and factor selections for DOEs. There are also further explanations on several topics, such as in-mold rheology curves, cavity imbalances, intensification ratios, gate seal studies, holding time optimization of hot runner molds, valve gated molds, and parts with large gates. A troubleshooting guide for common molded defects is also provided. With the purchase of this book, you also receive a free personal access code to download the eBook.
Author: Suhas Kulkarni Publisher: Hanser Gardner Publications ISBN: 9783446422759 Category : Injection molding of plastics Languages : en Pages : 256
Book Description
This book introduces the concept of scientific processing for injection molding. A section on design of experiments for injection molding provides insight to the cosmetic and dimensional process windows. This book also includes a plan to release qualified molds into production, trouble shooting tips, and topics that impact a robust process such as the use of regrind, mold cooling, and venting.
Author: Rong Zheng Publisher: Springer Science & Business Media ISBN: 3642212638 Category : Technology & Engineering Languages : en Pages : 194
Book Description
This book covers fundamental principles and numerical methods relevant to the modeling of the injection molding process. As injection molding processing is related to rheology, mechanical and chemical engineering, polymer science and computational methods, and is a rapidly growing field, the book provides a multidisciplinary and comprehensive introduction to the subjects required for an understanding of the complex process. It addresses the up-to-date status of fundamental understanding and simulation technologies, without losing sight of still useful classical approaches. The main chapters of the book are devoted to the currently active fields of flow-induced crystallization and orientation evolution of fiber suspensions, respectively, followed by detailed discussion of their effects on mechanical property, shrinkage and warpage of injection-molded products. The level of the proposed book will be suitable for interested scientists, R&D engineers, application engineers, and graduate students in engineering.
Author: Jehuda Greener Publisher: Hanser Publications ISBN: Category : Injection molding of plastics Languages : en Pages : 354
Book Description
One of the key aspects of the production of high precision components is the need to meet extremely tight dimensional tolerances, typically in the submicron range, and maintain these tolerances over the practical lifetimes of the molded articles. In addition, as many of the precision components are utilized in various optoelectronic systems and devices, control of optical and electrical properties is often crucial. The strict control of dimensional and electro-optical properties requires a systematic reexamination of the conventional injection-molding process with special consideration of its impact on the dimensions and electro-optical characteristics of the molded article. This volume examines precision injection molding from different perspectives, covering materials, process and hardware aspects of the technology, with special emphasis on the dimensional integrity and stability of the molded components. Special topics covered in this volume include: dimensional stability of molded plastics, models for warpage development, compact disc molding, process control, crystallization phenomena in injection molding, micro-molding and microfluidics.
Author: Edgardo O. Taroco Publisher: John Wiley & Sons ISBN: 1119600901 Category : Mathematics Languages : en Pages : 606
Book Description
Introduces readers to the fundamentals and applications of variational formulations in mechanics Nearly 40 years in the making, this book provides students with the foundation material of mechanics using a variational tapestry. It is centered around the variational structure underlying the Method of Virtual Power (MVP). The variational approach to the modeling of physical systems is the preferred approach to address complex mathematical modeling of both continuum and discrete media. This book provides a unified theoretical framework for the construction of a wide range of multiscale models. Introduction to the Variational Formulation in Mechanics: Fundamentals and Applications enables readers to develop, on top of solid mathematical (variational) bases, and following clear and precise systematic steps, several models of physical systems, including problems involving multiple scales. It covers: Vector and Tensor Algebra; Vector and Tensor Analysis; Mechanics of Continua; Hyperelastic Materials; Materials Exhibiting Creep; Materials Exhibiting Plasticity; Bending of Beams; Torsion of Bars; Plates and Shells; Heat Transfer; Incompressible Fluid Flow; Multiscale Modeling; and more. A self-contained reader-friendly approach to the variational formulation in the mechanics Examines development of advanced variational formulations in different areas within the field of mechanics using rather simple arguments and explanations Illustrates application of the variational modeling to address hot topics such as the multiscale modeling of complex material behavior Presentation of the Method of Virtual Power as a systematic tool to construct mathematical models of physical systems gives readers a fundamental asset towards the architecture of even more complex (or open) problems Introduction to the Variational Formulation in Mechanics: Fundamentals and Applications is a ideal book for advanced courses in engineering and mathematics, and an excellent resource for researchers in engineering, computational modeling, and scientific computing.
Author: Philippe Aghion Publisher: MIT Press ISBN: 9780262011662 Category : Business & Economics Languages : en Pages : 720
Book Description
"Problems and solutions by Cecilia Garcâia-Peänalosa in collaboration with Jan Boone, Chol-Won Li, and Lucy White." Includes bibliographical references (p. [665]-687) and index.
Author: Li Lü Publisher: Springer Science & Business Media ISBN: 9780792374008 Category : Technology & Engineering Languages : en Pages : 296
Book Description
The term rapid prototyping (RP) refers to a generic group of emerging technologies that enable very quick fabrication of engineering components primarily targeted for prototyping applications. With RP, very complex threeƯ dimensional parts or prototypes can be fabricated without the need of costly tooling and machining. This inevitably leads to much shorter design cycle time and lower cost of building a prototype. Its manifold benefits include significant productivity gains, cost saving, and shortened development time to introduce concept models. As such, RP technologies have attracted tremendous R & D interests from both academia and industry in the past decade. Many different processes and materials have been commercialized and used in industry primarily for the fabrication of physical prototypes. More recent interests in RP technologies are towards functional applications of the fabricated parts, such as in rapid tooling applications and replacements of damaged components. Many processes and materials have been commercialized but are yet to be able to fulfill the aforementioned functional requirements because of limited mechanical strengths of the fabricated parts.
Author: Gary F. Schiller Publisher: Carl Hanser Verlag GmbH Co KG ISBN: 1569902569 Category : Technology & Engineering Languages : en Pages : 184
Book Description
This easy-to-understand guide provides the necessary information to implement a scientific molding program. It is a hands-on reference for people on the molding floor, including those previously lacking theoretical background or formal education. The book covers how the injection molding machine prepares the plastic and understanding of plastic flow. The functions of the main machine components are explained and understanding of correct procedures and testing is developed. Each step of the process is clearly explained in a step-by-step manner, and simple examples of important calculations are provided. The practical approach is augmented by useful guides for troubleshooting and machine set-up. An Excel spreadsheet with a process test and a machine performance test is available as bonus material. The 2nd edition has various updates, improvements, and corrections throughout. Contents 1. Injection Unit: Screw 2. Injection Unit: Barrel 3. Clamping Unit 4. Ejectors/Controllers, Human Machine Interface (HMI) 5. Machine Performance Testing 6. Process Development Test 7. Plastic Temperature 8. Plastic Flow 9. Plastic Pressure (Pack/Hold) 10. Cooling 11. Benchmarking the Injection Molding Process 12. Process Troubleshooting 13. What is Important on a Set-Up Sheet? 14. Commonly Used Conversion Factors and Formulas 15. Machine Set-Up 16. Things That Hurt the Bottom Line of a Company 17. Terms and Definitions
Author: Bernie Stritzke Publisher: Carl Hanser Verlag GmbH Co KG ISBN: 3446433457 Category : Technology & Engineering Languages : en Pages : 204
Book Description
The book covers chemistry of thermoset elastomers, but only to the extent needed for understanding how to process them through a manufacturing environment and how they react in various manufacturing methods. The focus of the book is to provide in-depth coverage of tooling, processing, and secondary operations that can improve manufacturing efficiencies. Detailed and easy to understand diagrams display specific conditions and how they can be improved upon. Innovative ideas and solutions are shared and discussed. 1. Introduction to Rubber Chemistry 2. Compounding, Mixing and Equipment 3. Materials 4. Product Design 5. Material Testing for Rubber 6. Polymer Flow 7. Molding Methods 8. Compression Molding 9. Transfer Molding 10. Injection Molding 11. LSR 12. Secondary Operations and Additional Methods 13. Rubber Molding Processing
Author: Pattie Maes Publisher: MIT Press ISBN: 9780262631358 Category : Computers Languages : en Pages : 212
Book Description
Designing Autonomous Agents provides a summary and overview of the radically different architectures that have been developed over the past few years for organizing robots. These architectures have led to major breakthroughs that promise to revolutionize the study of autonomous agents and perhaps artificial intelligence in general. The new architectures emphasize more direct coupling of sensing to action, distributedness and decentralization, dynamic interaction with the environment, and intrinsic mechanisms to cope with limited resources and incomplete knowledge. The research discussed here encompasses such important ideas as emergent functionality, task-level decomposition, and reasoning methods such as analogical representations and visual operations that make the task of perception more realistic. Contents A Biological Perspective on Autonomous Agent Design, Randall D. Beer, Hillel J. Chiel, Leon S. Sterling * Elephants Don't Play Chess, Rodney A. Brooks * What Are Plans For? Philip E. Agre and David Chapman * Action and Planning in Embedded Agents, Leslie Pack Kaelbling and Stanley J. Rosenschein * Situated Agents Can Have Goals, Pattie Maes * Exploiting Analogical Representations, Luc Steels * Internalized Plans: A Representation for Action Resources, David W. Payton * Integrating Behavioral, Perceptual, and World Knowledge in Reactive Navigation, Ronald C. Arkin * Symbol Grounding via a Hybrid Architecture in an Autonomous Assembly System, Chris Malcolm and Tim Smithers * Animal Behavior as a Paradigm for Developing Robot Autonomy, Tracy L. Anderson and Max Donath
Author: Suhas Kulkarni
Author: Suhas Kulkarni
Author: 
Author: Rong Zheng
Author: Jehuda Greener
Author: Edgardo O. Taroco
Author: Philippe Aghion
Author: Li Lü
Author: Gary F. Schiller
Author: Bernie Stritzke
Author: Pattie Maes