Application And Verification Properties Of The Thermal Process Model
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Application And Verification Properties Of The Thermal Process Model
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Author :
language : en
Publisher:
Release Date : 2015
Application And Verification Properties Of The Thermal Process Model written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Thermal Process Modeling 2014
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Author : B. Lynn Ferguson, Robert Goldstein, Scott MacKenzie, and Rozalia Papp
language : en
Publisher: ASM International
Release Date : 2014-06-01
Thermal Process Modeling 2014 written by B. Lynn Ferguson, Robert Goldstein, Scott MacKenzie, and Rozalia Papp and has been published by ASM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-01 with Technology & Engineering categories.
Thermal processes are key manufacturing steps in producing durable and useful products, with solidification, welding, heat treating, and surface engineering being primary steps. These papers represent the latest state-of-the-art in thermal process modeling. The breadth of topics covers the depth of the industry.
Infrared Thermography And Thermal Nondestructive Testing
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Author : Vladimir Vavilov
language : en
Publisher: Springer Nature
Release Date : 2020-07-10
Infrared Thermography And Thermal Nondestructive Testing written by Vladimir Vavilov and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-10 with Technology & Engineering categories.
This is the first book summarizing the theoretical basics of thermal nondestructive testing (TNDT) by combining elements of heat conduction, infrared thermography, and industrial nondestructive testing. The text contains the physical models of TNDT, heat transfer in defective and sound structures, and thermal properties of materials. Also included are the optimization of TNDT procedures, defect characterization, data processing in TNDT, active and passive TNDT systems, as well as elements of statistical data treatment and decision making. This text contains in-depth descriptions of applications in infrared/thermal testing within aerospace, power production, building, as well as the conservation of artistic monuments The book is intended for the industrial specialists who are involved in technical diagnostics and nondestructive testing. It may also be useful for academic researchers, undergraduate, graduate and PhD university students.
Determination Of Thermal Properties Of Mineral Wool Insulation Materials For Use In Full Scale Fire Modelling
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Author : Nicole Nagy
language : en
Publisher:
Release Date : 2020
Determination Of Thermal Properties Of Mineral Wool Insulation Materials For Use In Full Scale Fire Modelling written by Nicole Nagy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Temperature-dependent materials properties are required for use in many contexts in fire safety engineering. While property values for many materials do exist, we often are limited in our understanding of how representative a given set of materials properties is for the application of interest. Thus, more work is needed to critically evaluate the measurement methods used, data obtained, and interpretation of the values in terms of their use in subsequent engineering applications. This research evaluates methods for determining thermal conductivity, density, mass loss, emissivity, porosity and specific heat capacity as functions of temperature of mineral wool insulation materials. These thermophysical properties will be applied to detailed heat and mass transfer modeling of the response of wall assemblies to realistic fire exposures. Use of the properties in more detailed models will, in turn, provide additional insight into the potential behavior of structural components during a fire for the purpose of occupant egress planning and firefighter safety. The ability to model thermophysical degradation of materials is extremely important when assessing response of assemblies to the wide range of temperatures characteristic of a real fire exposure. Development of consistent methods for analysis and interpretation of the thermophysical properties of each element of the assembly will also guide testing of new, or previously untested, construction materials. Further, in order to develop a model of the response of the full assembly, it is necessary to determine appropriate parameters and properties required as input to submodels developed for the behavior of each material and those must accurately reflect the thermal and mass transfer processes taking place in that material. The objective of this study is to establish a set of methods for accurately characterizing the thermophysical response of construction materials as a function of temperature across a range of temperatures that would be encountered during exposure to real fire events. Currently, one of the most common practices is to model heat transfer in a material using "effective" thermophysical properties for that material. This can involve estimating one or more properties at a set value of temperature (often room temperature or an average value between room and fire temperature) or combining two or more properties into a single "effective" value as needed for input to the model. Such treatments are approximations intended to simplify the modeling process. It is well known that material properties change as a function of temperature, however, determination of properties such as density, specific heat, and thermal conductivity as functions of temperature is time consuming and is oftentimes inconsistent, depending on the material of interest and application. Some problems include the difficulty in preparation of specimens that are representative of the actual application of the material, as well as the variation of property data depending on the methods and/or heating regimes used in their determination. The wide range of materials commonly used in construction, each with distinct temperature response characteristics, also presents a challenge, making it difficult to develop universal methods for characterization that can be easily applied to every material. In this research, physical and chemical properties of mineral wool insulation are first obtained using common practices listed in the literature, such as thermo-gravimetric analysis (TGA), and differential scanning calorimetry (DSC), as well as experiments designed by the writer. These reference values are then compared to values obtained using alternative or modified methods, as well as different test parameters, such as heating regimes or specimen preparation, designed to explicitly measure phenomena that are not specified through current property values. For example, from TGA experiments mass loss as a function of temperature is measured, which provides an estimate for density of a material as a function of temperature. Through the mass loss rate curve, temperatures at which thermally induced reactions are taking place can be identified, which advises on how to model that particular material in the temperature range of interest. From DSC test data, the specific heat capacity is calculated. The specific heat and density will then be used in combination with other results to estimate the thermal conductivity. Finally, properties measured using the various methods will be used as input into one-dimensional or more complex models of small-scale tests and full-scale wall fire experiments to predict the response of the assembly. New methods will be further interpreted in terms of their differences to current methods and those methods that provide the best representation of observations seen in the tests will be recommended as the methods to be used in future characterization of construction materials in this context.
Les Administrateurs Les Techniciens Et Les Savants
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Author :
language : en
Publisher:
Release Date : 1953
Les Administrateurs Les Techniciens Et Les Savants written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with categories.
Handbook Of Thermal Process Modeling Steels
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Author : Cemil Hakan Gur
language : en
Publisher: CRC Press
Release Date : 2008-12-22
Handbook Of Thermal Process Modeling Steels written by Cemil Hakan Gur and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-12-22 with Technology & Engineering categories.
An Emerging Tool for Pioneering Engineers Co-published by the International Federation of Heat Treatment and Surface Engineering.Thermal processing is a highly precise science that does not easily lend itself to improvements through modeling, as the computations required to attain an accurate prediction of the microstructure and properties of work
Laser Cutting Of Wood
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Author : Josep Brescó Ferraz
language : en
Publisher:
Release Date : 2013
Laser Cutting Of Wood written by Josep Brescó Ferraz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Laser cutting of metallic materials has been applied for many decades in industries because it is a process that has many advantages in processing materials: non-contact method, freedom of processing geometry, efficient technology for the serial process, etc. However, the laser has not been applied in many research fields relating to wood because originally it was not designed for this and there are some extra complications as the costs compared to the traditional methods. Usually, the wood in the industry does not need great finishes as it is not used in complex geometry pieces compared with the metals. Despite that, all the advantages that the lasers could have in the metals are also present in the case of industrial wood cutting because it can cut complicated profiles with a smoother and softer cut surface without sawdust, it is an easily automatable process, there is no tool wear, etc. For this reason, this project seeks to investigate how the laser works and what possibilities can give with regard to industrial wood cutting. The main motivation for doing the project is the fact that cutting laser related to industrial wood materials is a fairly unknown field but in turn, its development could have a wide range of applications in order to improve the industrial wood pieces and obtaining more complicated profiles which can be applied in more fields of the industry and thus, compete with the traditional cutting technology. Thus, as the name of the project indicates, the main point is to understand how to apply the laser in the field of wood industry, specifically for the cutting process and, in turn, look for a modeling to quantify some of the qualities of the final workpiece, as the final geometry or the kerf width. The research project is divided in two sections: a theoretical part and a second with the experimentation. The first theoretical part describes the theory necessary to develop the second part of the project. This section begins with a detailed description of the properties of wood that will be important for understanding the laser cutting process of the industrial wood, then, the theoretical basis of the laser operation are described in order to understand the discussions that come in the rest of the project. Finally, the various laser cutting processes are described to get to the explanation of the phenomena that occur in the specific case of laser cutting of industrial wood. After this theoretical introduction, the project focuses on the analysis of the state of the art in order to get to the demonstration of a mathematical model which will be the basis of the final experimentation. This experimentation will be done with two types of industrial wood, concretely the MDF and the Chipboard, because they are two of the most used in the furniture industry due to their reduced price and their properties, such as their easily shaping. Furthermore, as the chipboard are wood chips glued together with a more amorphous structure than the MDF, the use of these two types of industrial wood allow to develop and verify the model in two different cases with different structures.
Application Of Bamboo In Building Envelope
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Author : Zujian Huang
language : en
Publisher: Springer
Release Date : 2019-05-14
Application Of Bamboo In Building Envelope written by Zujian Huang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-14 with Architecture categories.
This book offers a comprehensive overview of the use of bamboo in building industry. It systematically demonstrates bamboo’s utility in terms of its properties, describing the material properties of typical industrial bamboo products, and discussing their performance evaluation and optimization as building components and in the creation of building envelopes. The book also includes examples of the high-value utilization of bamboo forest resources. Further, it examines how building performance may be affected by conditions such as climate. Including insights from material science, construction design, building physics and building climatology, the book also provides data obtained from technology and market status investigation, laboratory test and the computer simulation.This book appeals to scientists and professionals, as it introduces and tests various bamboo products, demonstrating the advantages and disadvantages for each one. The book is also a valuable resource for civil engineers and students interested in this unique plant material and its application in the building industry.
Food Preservation Process Design
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Author : Dennis R. Heldman
language : en
Publisher: Academic Press
Release Date : 2011-03-14
Food Preservation Process Design written by Dennis R. Heldman and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-03-14 with Technology & Engineering categories.
The preservation processes for foods have evolved over several centuries, but recent attention to non-thermal technologies suggests that a new dimension of change has been initiated.The new dimension to be emphasized is the emerging technologies for preservation of foods and the need for sound base of information to be developed as inputs for systematic process design. The focus of the work is on process design, and emphasizes the need for quantitative information as inputs to process design.The concepts presented build on the successful history of thermal processing of foods and use many examples from these types of preservation processes. Preservation of foods by refrigeration, freezing, concentration and dehydration are not addressed directly, but many of the concepts to be presented would apply. Significant attention is given to the fate of food quality attributes during the preservation process and the concept of optimizing process parameters to maximize the retention of food quality. Focuses on Kinetic Models for Food Components Reviews Transport Models in Food Systems Asseses Process Design Models
Data Driven Modeling For Additive Manufacturing Of Metals
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Author : National Academies of Sciences, Engineering, and Medicine
language : en
Publisher: National Academies Press
Release Date : 2019-10-09
Data Driven Modeling For Additive Manufacturing Of Metals written by National Academies of Sciences, Engineering, and Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-09 with Technology & Engineering categories.
Additive manufacturing (AM) is the process in which a three-dimensional object is built by adding subsequent layers of materials. AM enables novel material compositions and shapes, often without the need for specialized tooling. This technology has the potential to revolutionize how mechanical parts are created, tested, and certified. However, successful real-time AM design requires the integration of complex systems and often necessitates expertise across domains. Simulation-based design approaches, such as those applied in engineering product design and material design, have the potential to improve AM predictive modeling capabilities, particularly when combined with existing knowledge of the underlying mechanics. These predictive models have the potential to reduce the cost of and time for concept-to-final-product development and can be used to supplement experimental tests. The National Academies convened a workshop on October 24-26, 2018 to discuss the frontiers of mechanistic data-driven modeling for AM of metals. Topics of discussion included measuring and modeling process monitoring and control, developing models to represent microstructure evolution, alloy design, and part suitability, modeling phases of process and machine design, and accelerating product and process qualification and certification. These topics then led to the assessment of short-, immediate-, and long-term challenges in AM. This publication summarizes the presentations and discussions from the workshop.