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Author: Antonio Rafael Ordóñez Müller
Publisher: kassel university press GmbH
ISBN: 3737606242
Category : Temperature measuring instruments
Languages : en
Pages : 177
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Book Description
Infrared thermography enables the non-contact measurement of an object’s surface temperature and presents the results in form of thermal images. The analysis of these images provides valuable information about an object’s thermal state. However, the fidelity of the thermal images strongly depends on the pose of the thermographic camera with respect to the surface. 3D thermography offers the possibility to overcome this and other limitations that affect conventional 2D thermography but most 3D thermographic systems developed so far generate 3D thermograms from a single perspective or from few noncontiguous points of view and do not operate in real time. As a result, the 3D thermograms they generate do not offer much advantage over conventional thermal images. However, recent technological advances have unlocked the possibility of implementing affordable handheld 3D thermal imaging systems that can be easily maneuvered around an object and that can generate high-fidelity 3D thermograms in real time. This thesis explores various aspects involved in the real-time generation of high-fidelity 3D thermograms at close range using a handheld 3D thermal imaging system, presents the results of scanning an operating industrial furnace and discusses the problems associated with the generation of 3D thermograms of large objects with complex geometries.
Author: Antonio Rafael Ordóñez Müller
Publisher: kassel university press GmbH
ISBN: 3737606242
Category : Temperature measuring instruments
Languages : en
Pages : 177
Get Book Here
Book Description
Infrared thermography enables the non-contact measurement of an object’s surface temperature and presents the results in form of thermal images. The analysis of these images provides valuable information about an object’s thermal state. However, the fidelity of the thermal images strongly depends on the pose of the thermographic camera with respect to the surface. 3D thermography offers the possibility to overcome this and other limitations that affect conventional 2D thermography but most 3D thermographic systems developed so far generate 3D thermograms from a single perspective or from few noncontiguous points of view and do not operate in real time. As a result, the 3D thermograms they generate do not offer much advantage over conventional thermal images. However, recent technological advances have unlocked the possibility of implementing affordable handheld 3D thermal imaging systems that can be easily maneuvered around an object and that can generate high-fidelity 3D thermograms in real time. This thesis explores various aspects involved in the real-time generation of high-fidelity 3D thermograms at close range using a handheld 3D thermal imaging system, presents the results of scanning an operating industrial furnace and discusses the problems associated with the generation of 3D thermograms of large objects with complex geometries.
Author: David Leonardo Arengas Rojas
Publisher: BoD – Books on Demand
ISBN: 3737610096
Category : Technology & Engineering
Languages : en
Pages : 182
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Book Description
Performing experiments for system identification of continuously operated plants might be restricted as it can impact negatively normal production. In such cases, using historical logged data can become an attractive alternative for system identification. However, operating points are rarely changed and parameter estimation methods can suffer numerical problems. Three main drawbacks of current approaches in this research area can be discussed. Firstly, detection tests are not adapted for dynamical systems. Secondly, methods to define upper interval bounds are not robust to colored noise that is more likely to be found in real applications. Thirdly, model estimation with the retrieved data is not supported and the performance of the method cannot be assessed. In the method proposed in this work, called data selection for system identification (DS4SID), previous drawbacks are addressed and robust tests are designed and implemented. The performance of DS4SID is evaluated in a simulated and laboratory multivariate processes. A process unit of the lab-scale factory “μPlant” is used as industryoriented case study. Models estimated with selected data are shown to have similar performance than estimates with the entire data set.
Author: Davide Astiaso Garcia
Publisher: MDPI
ISBN: 3036505180
Category : Technology & Engineering
Languages : en
Pages : 194
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Book Description
The energy transition is one of the key approaches in the effort to halt climate changes, and it has become even more essential in the light of the recent COVID-19 pandemic. Fostering the energy efficiency and the energy independence of the building sector is a focal aim to move towards a decarbonized society. In this context, building physics and building energy systems are fundamental disciplines based on applied physics applications in civil, architectural, and environmental engineering, including technical themes related to the planning of energy and the environment, diagnostic methods, and mitigating techniques. This Special Issue contains information on experimental studies in the following research topics: renewable energy sources, building energy analysis, rational use of energy, heat transmission, heating and cooling systems, thermofluid dynamics, smart energy systems, and energy service management in buildings.
Author: Waldemar Minkina
Publisher: John Wiley & Sons
ISBN: 9780470682241
Category : Technology & Engineering
Languages : en
Pages : 212
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Book Description
In Infrared Thermography, the authors discuss the sources of uncertainty, including how to quantify these sources, associated with the use of thermal imagers. This book explains the common misunderstandings in the interpretation of temperature measurements, and provides a metrological evaluation of commercially available infrared cameras. It suggests how to best estimate the accuracy of thermal imaging instruments, whilst considering the level of accuracy attributed to measurements from these thermal imagers. Key features: Begins with an introduction to uncertainties and radiance terms before moving onto the issues surrounding thermal imaging. Deals with the basic issues of thermal imager measurements such as the law of heat exchange by radiation and emissivity. Describes a typical processing algorithm of the measurement path for an example infrared camera. Discusses measurement error analysis of a thermal imaging system. Considers the results of simulation research of thermography uncertainty. Includes an accompanying website which hosts MATLAB® code. Infrared Thermography is primarily aimed at quantitative thermographers, and manufacturers, vendors and users of thermal imagers. This book is also of interest to senior undergraduate and postgraduate students across a range of disciplines such as electrical, mechanical and civil engineering, computer science, and biomedicine.
Author: Max Schweidler
Publisher: Getty Publications
ISBN: 9780892368358
Category : Antiques & Collectibles
Languages : en
Pages : 320
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Book Description
Ever since its original publication in Germany in 1938, Max Schweidler's Die Instandetzung von Kupferstichen, Zeichnungen, Buchern usw has been recognized as a seminal modern text on the conservation and restoration of works on paper. To address what he saw as a woeful dearth of relevant literature and in order to assist those who have 'set themselves the goal of preserving cultural treasures, ' the noted German restorer composed a thorough technical manual covering a wide range of specific techniques, including detailed instructions on how to execute structural repairs and alterations that, if skilfully done, can be virtually undetectable. By the mid-twentieth century, curators and conservators of graphic arts, discovering a nearly invisible repair in an old master print or drawing, might comment that the object had been 'Schweidlerized.' This volume, based on the authoritative revised German edition of 1949, makes Schweidler's work available in English for the first time, in a meticulously edited and annotated critical edition. The editor's introduction places the work in its historical context and probes the philosophical issues the book raises, while some two hundred annotati
Author: Geoff Dougherty
Publisher: Cambridge University Press
ISBN: 0521860857
Category : Computers
Languages : en
Pages : 463
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Book Description
Hands-on text for a first course aimed at end-users, focusing on concepts, practical issues and problem solving.
Author: Daniel Coleman
Publisher: Government Printing Office
ISBN: 9780160916960
Category : Technology & Engineering
Languages : en
Pages : 204
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Book Description
NP 2012-11-912-HQ. Provides an in-depth look at how NASA's initiatives in aeronautics and space exploration have resulted in beneficial commercial technologies in the fields of health and medicine, transportation, public safety, consumer goods, environmental protection, computer technology and industrial productivity
Author: Horst Czichos
Publisher: Springer Science & Business Media
ISBN: 3642258506
Category : Technology & Engineering
Languages : en
Pages : 560
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Book Description
This book presents concepts, methods and techniques to examine symptoms of faults and failures of structures, systems and components and to monitor functional performance and structural integrity. The book is organized in five parts. Part A introduces the scope and application of technical diagnostics and gives a comprehensive overview of the physics of failure. Part B presents all relevant methods and techniques for diagnostics and monitoring: from stress, strain, vibration analysis, nondestructive evaluation, thermography and industrial radiology to computed tomography and subsurface microstructural analysis. Part C cores the principles and concepts of technical failure analysis, illustrates case studies, and outlines machinery diagnostics with an emphasis on tribological systems. Part D describes the application of structural health monitoring and performance control to plants and the technical infrastructure, including buildings, bridges, pipelines, electric power stations, offshore wind structures, and railway systems. And finally, Part E is an excursion on diagnostics in arts and culture. The book integrates knowledge of basic sciences and engineering disciplines with contributions from research institutions, academe, and industry, written by internationally known experts from various parts of the world, including Europe, Canada, India, Japan, and USA.
Author: Vistasp M. Karbhari
Publisher: Elsevier
ISBN: 085709355X
Category : Technology & Engineering
Languages : en
Pages : 729
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Book Description
The increased use of polymer matrix composites in structural applications has led to the growing need for a very high level of quality control and testing of products to ensure and monitor performance over time. Non-destructive evaluation (NDE) of polymer matrix composites explores a range of NDE techniques and the use of these techniques in a variety of application areas.Part one provides an overview of a range of NDE and NDT techniques including eddy current testing, shearography, ultrasonics, acoustic emission, and dielectrics. Part two highlights the use of NDE techniques for adhesively bonded applications. Part three focuses on NDE techniques for aerospace applications including the evaluation of aerospace composites for impact damage and flaw characterisation. Finally, the use of traditional and emerging NDE techniques in civil and marine applications is explored in part four.With its distinguished editor and international team of expert contributors, Non-destructive evaluation (NDE) of polymer matrix composites is a technical resource for researchers and engineers using polymer matrix composites, professionals requiring an understanding of non-destructive evaluation techniques, and academics interested in this field. - Explores a range of NDE and NDT techniques and considers future trends - Examines in detail NDE techniques for adhesively bonded applications - Discusses NDE techniques in aerospace applications including detecting impact damage, ultrasonic techniques and structural health monitoring
Author: J. Middleton
Publisher: CRC Press
ISBN: 9782919875009
Category : Medical
Languages : en
Pages : 582
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Book Description
These papers are concerned with new advances and novel solutions in the areas of biofluids, image-guided surgery, tissue engineering and cardovascular mechanics, implant analysis, soft tissue mechanics, bone remodeling and motion analysis. The contents also feature a special section on dental materials, dental adhesives and orthodontic mechanics. This edition contains many examples, tables and figures, and together with the many references, provides the reader with invaluable information on the latest theoretical developments and applications.
