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Author: Beth Boling
Publisher:
ISBN:
Category : Computer industry
Languages : en
Pages : 196
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Book Description
Author: Beth Boling
Publisher:
ISBN:
Category : Computer industry
Languages : en
Pages : 196
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Book Description
Author: Suresh G. Advani
Publisher: CRC Press
ISBN: 1466580569
Category : Technology & Engineering
Languages : en
Pages : 628
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Book Description
There is a wealth of literature on modeling and simulation of polymer composite manufacturing processes. However, existing books neglect to provide a systematic explanation of how to formulate and apply science-based models in polymer composite manufacturing processes. Process Modeling in Composites Manufacturing, Second Edition provides tangible m
Author: Ritu Gupta
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 260
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Book Description
Wood plastic composites (WPC) have emerged as new option for composites in the composite industry. WPC have been accepted globally due to their remarkable advantages compared to synthetic fiber composites. In order to manufacture WPC with specific properties and quality, the industries at present employ trial-and-error method. Besides taking up a lot of time, a significant amount of materials is wasted with this method. However, this problem can be reduced to some extent through the use of simulation models for the prediction of the properties in the composites. Modeling and simulation allow users to visualize the effects of the parameters that are especially challenging for comprehension. In addition, the properties of WPC are dependent on the processing conditions. Hence, there are many parameters involved in the manufacturing process. Some of these parameters are important and are included in the simulation model to study and to understand their effects on the final WPC product. Thus, an integrated simulation model has been proposed to predict the thermal and the mechanical properties of WPC, which comprised of three main modules: a) the heat transfer model, b) the mechanical model, and c) the empirical model. The heat transfer model predicts the profile of temperature and the degree of cure via Melt Flow Index (MFI) and Young's modulus for every layer during hot compression molding. Besides, a finite difference method was used to estimate the changes in the temperature in WPC during the compression molding process. Next, the mechanical model predicts the mechanical properties, such as Young's modulus and tensile strength. Lastly, an empirical model to predict the Young's modulus and the tensile strength based on the effects of the coupling agents. All the three models were validated with experimental results. The simulation model for heat transfer inside the board predicted the changes in temperature and the curing index of the composite across the thickness during the compression molding process. The proposed mechanical model successfully predicted the changes in tensile strength and Young's modulus with changes in the percentage of wood fiber. Furthermore, wood fiber was considered as a natural resource with nonuniform properties, as far as this study was concerned. Thus, the changes in the mechanical strength of WPC were predicted as the changes in the properties of wood fibers involved reduction in void volume, alkalization, and variations in moisture content. Moreover, the empirical model predicted the mechanical properties as a function of seven individual parameters for composites that were made of four types of fibers (Jute, Abaca, Hemp, and Pine) and Polypropylene. This model had been found helpful in predicting the effects of coupling agents on the mechanical strength of the composite. Therefore, this integrated research work with GUI should be able to aid the industry and the researchers concerning WPC.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309084822
Category : Technology & Engineering
Languages : en
Pages : 197
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Book Description
The Committee on Modeling and Simulation Enhancements for 21st Century Manufacturing and Acquisition was formed by the NRC in response to a request from the Defense Modeling and Simulation Office (DMSO) of DOD. The committee was asked to (1) investigate next-generation evolutionary and revolutionary M&S capabilities that will support enhanced defense systems acquisition; (2) identify specific emerging design, testing, and manufacturing process technologies that can be enabled by advanced M&S capabilities; (3) relate these emerging technologies to long-term DOD requirements; (4) assess ongoing efforts to develop advanced M&S capabilities and identify gaps that must be filled to make the emerging technologies a reality; (5) identify lessons learned from industry; and (6) recommend specific government actions to expedite development and to enable maximum DOD and U.S. commercial benefit from these capabilities. To complete its task, the committee identified relevant trends and their impact on defense acquisition needs; current use and support for use of M&S within DOD; lessons learned from commercial manufacturing; three cross-cutting and especially challenging uses of M&S technologies; and the areas in which basic research is needed in M&S in order to achieve the desired goals for manufacturing and defense acquisition.
Author:
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 128
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Book Description
USDA Forest Service, Forest Products Laboratory (Madison, Wisconsin) and the Wood-Based Composites Center of Virginia Tech (Blacksburg, Virginia) co-sponsored a conference, held November 5-6, 2003, in Madison, Wisconsin, on the fundamentals of composite processing. The goals were to assess what we know, define what we need to know, and then establish the state of the art in hot-pressing of wood-based, particulate composites. Academic and industrial professionals from around North America and Europe were invited to participate because of their expertise and interest in this area of research. The workshop covered four critical topics associated with hot-pressing of composites: resin curing and bonding, press control, physics of hotpressing, and computer simulations of the pressing process.?This report is the official record of the presentations and discussions that occurred during this workshop.
Author: United States. Defense Science Board. Task Force on Engineering in the Manufacturing Process
Publisher: DIANE Publishing
ISBN: 1428982973
Category : Manufacturing processes
Languages : en
Pages : 171
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Book Description
Author: J.W. Bull
Publisher: Springer Science & Business Media
ISBN: 9401106037
Category : Technology & Engineering
Languages : en
Pages : 457
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Book Description
Composite materials are increasingly used in many applications because they offer the engineer a range of advantages over traditional materials. They are often used in situations where a specified level of performance is required, but where the cost of testing the materials under the extremes of those specifications is very high. In order to solve this problem, engineers are turning to computer Modelling to evaluate the materials under the range of conditions they are likely to encounter. Many of these analyses are carried out in isolation, and yet the evaluation of a range of composites can be carried out using the same basic principles. In this new book the editor has brought together an international panel of authors, each of whom is working on the analysis and Modelling of composite materials. The overage of the book is deliberately wide; to illustrate that similar principles and methods can be used to model and evaluate a wide range of materials. It is also hoped that, by bringing together this range of topics, the insight gained in the study of one composite can be recognized and utilized in the study of others. Professional engineers involved in the specification and testing of composite material structures will find this book an invaluable resource in the course of their work. It will also be of interest to those industrial and academic engineers involved in the design, development, manufacture and applications of composite materials.
Author: Charles Lu
Publisher: SAE International
ISBN: 0768001927
Category : Technology & Engineering
Languages : en
Pages : 190
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Book Description
Since the successful production of carbon fibers in early 1960s, composite materials have emerged as the materials of choice for general aviation aircraft, military aircraft, space launch vehicles, and unmanned air vehicles. This has revolutionized the aerospace industry due to their excellent mechanical and physical properties, as well as weight-reducing ability. The next- generation material development model should operate in an integrated computational environment, where new material development, manufacturability, and product design practice are seamlessly interconnected. Materials and Process Modeling of Aerospace Composites reports recent developments on materials and processes of aerospace composites by using computational modeling, covering the following aspects: • The historical uses of composites in aerospace industry, documenting in detail the early usage of composite materials on Premier I by Raytheon to recent full-scale applications of composites on large commercial aircraft by Boeing and Airbus. • An overview on the classifications of composites used in aerospace industry, ranging from conventional glass- fiber reinforced composites to advanced graphene nanocomposites. • The recent work on computational material engineering on aerospace composite materials, including fundamental computational frame work and case studies on the modeling of materials and processes
Author: A C Long
Publisher: CRC Press
ISBN: 9780849325939
Category : Technology & Engineering
Languages : en
Pages : 504
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Book Description
Textile composites encompass a rather narrow range of materials, based on three-dimensional reinforcements produced using specialist equipment. This book describes the design, manufacture and applications of textile composites. The intention is to describe the broad range of polymer composite materials with textile reinforcements, from woven and non-crimp commodity fabrics to 3-D textiles and their applications. The book gives particular attention to the modelling of textile structures, composites manufacturing methods, and subsequent component performance. This practical book is an invaluable guide for manufacturers of polymer composite components, end-users and designers, structural materials researchers, and textile manufacturers involved in the development of new products with textile composites.
Author: Charles Lu
Publisher: SAE International
ISBN: 0768001900
Category : Technology & Engineering
Languages : en
Pages : 190
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Book Description
Since the successful production of carbon fibers in early 1960s, composite materials have emerged as the materials of choice for general aviation aircraft, military aircraft, space launch vehicles, and unmanned air vehicles. This has revolutionized the aerospace industry due to their excellent mechanical and physical properties, as well as weight-reducing ability. The next- generation material development model should operate in an integrated computational environment, where new material development, manufacturability, and product design practice are seamlessly interconnected. Materials and Process Modeling of Aerospace Composites reports recent developments on materials and processes of aerospace composites by using computational modeling, covering the following aspects: • The historical uses of composites in aerospace industry, documenting in detail the early usage of composite materials on Premier I by Raytheon to recent full-scale applications of composites on large commercial aircraft by Boeing and Airbus. • An overview on the classifications of composites used in aerospace industry, ranging from conventional glass- fiber reinforced composites to advanced graphene nanocomposites. • The recent work on computational material engineering on aerospace composite materials, including fundamental computational frame work and case studies on the modeling of materials and processes
