Relevant bibliographies by topics / Thermography / Dissertations / Theses
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Dissertations / Theses on the topic 'Thermography'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Purslow, Christine. "Dynamic ocular thermography." Thesis, Aston University, 2005. http://publications.aston.ac.uk/14563/.

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The ability to measure ocular surface temperature (OST) with thermal imaging offers potential insight into ocular physiology that has been acknowledged in the literature. The TH7102MX thermo-camera (NEC San-ei, Japan) continuously records dynamic information about OST without sacrificing spatial resolution. Using purpose-designed image analysis software, it was possible to select and quantify the principal components of absolute temperature values and the magnitude plus rate of temperature change that followed blinking. The techniques was examined for repeatability, reproducibility and the eff
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2

Larsen, Cory A. "Document Flash Thermography." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1018.

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This thesis presents the application of ash thermography techniques to the analysis of documents. The motivation for this research is to develop the ability to non-destructively reveal covered writings in archaeological artifacts such as the Codex Selden or Egyptian car- tonnage. Current common signal processing techniques are evaluated for their effectiveness in enhancing subsurface writings found within a set of test documents. These processing techniques include: false colorization, contrast stretching, histogram equalization, median altering, Gaussian low-pass altering, layered signal reco
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3

Ziegler, Mathias. "Thermography of semiconductor lasers." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/15944.

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Halbleiterlaser stellen mit über 70% Wirkungsgrad einzigartig effiziente Lichtquellen dar. Dennoch ist ihre zuverlässige Nutzung, insbesondere im Bereich hoher Leistungsdichten, von thermischen Limitierungen geprägt. Einen grundlegenden Beitrag zu deren physikalischen Verständnis leistet die Analyse der thermischen Eigenschaften und Degradationsprozesse solcher Bauelemente. In dieser Arbeit wird hierzu die Thermographie als innovative Analysemethode untersucht. Das Plancksche Strahlungsgesetz erlaubt die radiometrische Ermittlung der Temperatur. Die wichtige physikalische Kenngröße Emissivität
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4

Monchau, Jean-Pierre. "Mesure d'émissivité pour la thermographie infrarouge appliquée au diagnostic quantitatif des structures." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST1128/document.

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La thermographie infrarouge constitue un outil de diagnostic très utile dans le domaine du bâtiment et du génie civil. Cependant un diagnostic quantitatif reste difficile, et l'émissivité des surfaces étudiées joue un rôle important. Le présent travail est une étude sur la mesure d'émissivité pour le diagnostic quantitatif des structures par thermographie. Un des enjeux est de compléter une base de données d'émissivité pour des matériaux du bâtiment et du génie civil ; pour cela il a été nécessaire de développer des appareils de mesure portables. Deux appareils ont été développés au CERTES, ut
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5

Moussa, Wael. "Thermography-Assisted Bearing Condition Monitoring." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31379.

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Abstract Despite the large amount of research work in condition based maintenance and condition monitoring methods, there is still a need for more reliable and accurate methods. The clear evidence of that need is the continued dependence on time based maintenance, especially for critical applications such as turbomachinery and airplane engines. The lack of accurate condition monitoring systems could lead to not only the unexpected failures as well as the resulting hazards and repair costs, but also a huge waste of material and time because of unnecessary replacement due to false alarms and unn
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6

Li, Zheng Ph D. Massachusetts Institute of Technology. "Computational Raman imaging and thermography." Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/130673.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, February, 2021<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 185-201).<br>Thermography tools that perform accurate temperature measurements with nanoscale resolution are highly desired in our modern society. Although researchers have put extensive efforts in developing nanoscale thermography for more than three decades and a significant amount of achievements have been made in this field, the mainstream thermography tools have not fully met the r
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7

Morgan, P. B. "Ocular thermography in health and disease." Thesis, University of Manchester, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507520.

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There has been interest in ocular temperature for over a century, with the publication of a limited amount of literature over that time. This thesis reports on the development and utilisation of a system for the measurement of ocular surface temperature based on an advanced infrared detector. The development of a suitable protocol for the infrared imaging and temperature measurement of the eye was established. Results from the analysis of the ocular temperature of 98 normal subjects indicated that the temperature at the centre of the cornea was 31.68 ± 0.60°C (mean ± SD), and the mean ocular s
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8

Fox, Matthew William. "Thermography approaches for building defect detection." Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/4304.

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Thermography is one technology, which can be used to detect thermally significant defects in buildings and is traditionally performed using a walk-through methodology. Yet because of limitations such as transient climatic changes, there is a key performance gap between image capture and interpretation. There are however new methodologies currently available, which actively address some of these limitations. By better understanding alternative methodologies, the performance gap can be reduced. This thesis contrasts three thermography methodologies (Walk-through, time-lapse and pass-by) to learn
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9

Zhang, Cheng. "Influence of surface roughness on thermography measurement." Thesis, Högskolan Väst, Avd för automationssystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-6842.

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This university Bachelor's Thesis was performed to explore the influence of surface roughness on the thermography measurement. Thermography is a non-destructive testing method which can be used to detect cracks. However, it is hard to define how the surface roughness influences the emissivity and the result of a thermography measurement, as well as how the angle of the excitation source influences the result. Therefore, this work aims to define how the heating angle and surface roughness influence the thermography measurement, define the relationship between surface roughness and emissivity fo
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10

Schuricht, Paul Hans. "Liquid crystal thermography in high speed flows." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310549.

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11

Gaidos, Eric J. (Eric James). "Remote infrared thermography for boundary layer measurements." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/43129.

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12

Захарова, Вікторія Миколаївна, Виктория Николаевна Захарова, Viktoriia Mykolaivna Zakharova, and Godwin Nkeokelonye. "Temperature based technologies in thermography and cryomedicine." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13936.

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13

Hamzah, Ab Razak. "The application of transient thermography to defect detection." Thesis, University of Bath, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296326.

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14

Abdul-Razzak, M. M. "Picture processing and display methods for microwave thermography." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354033.

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15

Richenderfer, Andrew Jonathan. "Development of MiST-IR : multi-spectral infrared thermography." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103700.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 91-92).<br>In this thesis, I present a new diagnostic technique for interrogating boiling heat transfer phenomena. The technique, called Multi-Spectral Infrared Thermography or MiST, builds on previous diagnostic techniques for measuring the 2-D wall temperature distribution or the 2-D phase distribution of the fluid above the surface. These methods make use of infrared thermography, a well developed pra
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16

Roddis, W. M. Kim. "Concrete bridge deck assessment using thermography and radar." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14943.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.<br>Bibliography: leaves 263-272.<br>by W. M. Kim Roddis.<br>M.S.
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17

Tan, Li Li. "Assessment of dry eyes using ocular surface thermography." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/assessment-of-dry-eyes-using-ocular-surface-thermography(77e912eb-6a15-4ea1-8b2c-7ed9958591ec).html.

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Assessment and diagnosis of dry eye disease (DED) is a challenging task. The conventional ways of diagnosing DED are problematic due to their invasiveness, poor test reliability and significant test duration. Previously, ocular surface thermography has been shown to be able to detect early inflammation and dry eye. However, its diagnostic ability and ocular temperature metrics that can best diagnose DED are not clear. The objectives of this thesis were manyfold. First, the prevalence of dry eye in Singapore population was investigated as a helpful basis for the rest of the project. A cross-sec
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18

Selva, Marti Salvador. "Aerial Thermography Inspections in Large-Scale PV Plants." Thesis, Högskolan Dalarna, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-28541.

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In order to successfully compete against the use of fossil fuels to generate electricity, one of the challenges in the photovoltaic (PV) business currently in focus is on the asset management of large PV plants, in which developing control techniques to prognosticate and evaluate the future energy performance will be essential. Infrared thermography inspections can give meaningful support to assess the quality and performance of PV modules. However, the implementation of a cost-effective method to scan and check huge PV plants represents different challenges, such as the cost and time of detec
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19

Parvataneni, Rohit. "Principal component thermography for steady thermal perturbation scenarios." Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1263397875/.

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20

Cuibus, Lucian <1982&gt. "Applications of infrared thermography in the food industry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5559/1/Cuibus_Lucian_Tesi.pdf.

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In the last 20-30 years, the implementation of new technologies from the research centres to the food industry process was very fast. The infrared thermography is a tool used in many fields, including agriculture and food science technology, because of it's important qualities like non-destructive method, it is fast, it is accurate, it is repeatable and economical. Almost all the industrial food processors have to use the thermal process to obtain an optimal product respecting the quality and safety standards. The control of temperature of food products during the production, transportation, s
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21

Cuibus, Lucian <1982&gt. "Applications of infrared thermography in the food industry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5559/.

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In the last 20-30 years, the implementation of new technologies from the research centres to the food industry process was very fast. The infrared thermography is a tool used in many fields, including agriculture and food science technology, because of it's important qualities like non-destructive method, it is fast, it is accurate, it is repeatable and economical. Almost all the industrial food processors have to use the thermal process to obtain an optimal product respecting the quality and safety standards. The control of temperature of food products during the production, transportation, s
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22

Visentini, Roberta. "Étude expérimentale des transferts thermiques en ébullition transitoire." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0106/document.

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L'ébullition est présente dans la vie de tous les jours et elle a été par conséquent le sujet de beaucoup d'études, mais pour la plupart en régimes stationnaires. Néanmoins, l'intérêt de connaître les caractéristiques de l'ébullition transitoire est aussi important notamment pour la prévention des accidents nucléaires majeurs. C'est justement dans l'optique de mieux comprendre les phénomènes d'ébullition qui se produisent lors d'un RIA (Accident d'Insertion de Réactivité) que cette thèse a été financée par l'IRSN. Le RIA est un accident qui peut résulter d'une défaillance du mécanisme de la gr
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23

Sun, Chih-Chen. "Modeling and characterization of potato quality by active thermography." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3012.

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24

Omer, Muhammad. "Impingement Cooling: Heat Transfer Measurement by Liquid Crystal Thermography." Thesis, Linköping University, Applied Thermodynamics and Fluid Mechanics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-52859.

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<p>In modern gas turbines parts of combustion chamber and turbine section are under heavy heat load, for example, the rotor inlet temperature is far higher than the melting point of the rotor blade material. These high temperatures causes thermal stresses in the material, therefore it is very important to cool the components for safe operation and to achieve desired component life. But on the other hand the cooling reduces the turbine efficiency, for that reason it is vital to understand and optimize the cooling technique.</p><p>In this project Thermochromic Liquid Crystals (TLCs) are used to
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25

Surabhi, Vijaykumar. "Automatic Features Identification with Infrared Thermography in Fever Screening." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20558.

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The goal of this thesis is to develop an algorithm to process infrared images and achieve automatic identification of moving subjects with fever. The identification is based on two main features: the distinction between the geometry of a human face and other objects in the field of view of the camera, and the temperature of the radiating object. Infrared thermography is a remote sensing technique used to measure temperatures based on emitted infrared radiation. Applications include fever screening in major public places such as airports and hospitals. Current accepted practice of screening req
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26

Niehof, Sjoerd Petrus. "Video thermography: complex regional pain syndrome in the picture." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/10704.

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27

Harik, Marc Anthony. "CHARACTERIZATION OF DEFECTS IN METAL SHEETS VIA INFRARED THERMOGRAPHY." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/32.

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Defects in Aluminum, Stainless steel and galvanized steel sheets are studied in reflection mode infrared thermography. The effect of material properties, surface finish, heating intensity, heater emission spectra, pixel size and defect size are studied. Contrast is governed by heat quality, emissivity and defect geometry—which follows a logarithmic trend. The diameter detected via infrared thermography is found to be at least 30% larger than the measured diameter and sub-pixel defects can be detected. The use of gradient and Laplacian of temperature is introduced as a means of increasing defec
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28

Hu, Ching Wen. "Fabric integrity evaluation of structural materials using infrared thermography." Thesis, University of South Wales, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395349.

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29

Yu, Jimmy Kalok. "Using infrared thermography to measure the maturity of concrete." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14321.

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30

Pierce, James. "Defect Detection in Additive Manufacturing Utilizing Long Pulse Thermography." Scholar Commons, 2018. http://scholarcommons.usf.edu/etd/7219.

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Additive Manufacturing (AM), over the years, has seen a tremendous amount of research for improving the manufacturability of materials into final products. The main advantages of additive manufacturing are the minimizing of waste material as it is an additive process. As well as the ability to create custom low-volume products without the need for creation of expensive tooling or programming before manufacturing begins. Because of these advantages, however, AM is susceptible to unique challenges in the quality side of manufacturing. These challenges include minimizing and detecting defects dur
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31

Hedayati, Vahid Peyman. "Automatic defect detection and depth estimation using pulsed thermography." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25638.

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L’évaluation non-destructive (END) est une branche de la science qui s’intéresse à l’uniformité, la qualité et la conformité des matériaux et les composants qu’ils servent à construire. Les techniques de END visent à repérer et à mesurer les caractéristiques principales des matériaux sans en affecter ou à en détruire la structure ou la fonctionnalité. L’END permet d’observer les propriétés internes des pièces et de détecter les défauts sous leur surface. Cette approche est devenue graduellement une technologie importante pour garantir la sécurité et la fiabilité de plusieurs composantes de sys
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32

Shrestha, Survesh Bahadur. "Defect Detection on Rail Base Area Using Infrared Thermography." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2758.

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This research aims to investigate the application of infrared thermography (IRT) as a method of nondestructive evaluation (NDE) for the detection of defects in the rail base area. Rails have to withstand harsh conditions during their application. Therefore, defects can develop in the base area of rails due to stresses such as bending, shear, contact, and thermal stresses, fatigue, and corrosion. Such defects can cause catastrophic failures in the rails, ultimately leading to train derailments. Rail base defects due to fatigue and corrosion are difficult to detect and currently there are no rel
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33

Bangalore, Gurudutt S. "Nondestructive evaluation of FRP composite members using infrared thermography." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2419.

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Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains viii, 101 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 98-101).
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34

Vidas, Stephen G. "Handheld 3D thermography using range sensing and computer vision." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/68030/1/Stephen_Vidas_Thesis.pdf.

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This thesis developed a method for real-time and handheld 3D temperature mapping using a combination of off-the-shelf devices and efficient computer algorithms. It contributes a new sensing and data processing framework to the science of 3D thermography, unlocking its potential for application areas such as building energy auditing and industrial monitoring. New techniques for the precise calibration of multi-sensor configurations were developed, along with several algorithms that ensure both accurate and comprehensive surface temperature estimates can be made for rich 3D models as they are
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35

Rauf, Abdul. "Thermal reconstruction techniques for the inspection of laminated composites." Thesis, University of Strathclyde, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291991.

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36

Estrada, Catalina. "Infrared Thermography to Evaluate Guastavino Vaulting at the West Side Market." Kent State University Honors College / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1368186834.

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37

Kang, Jihun. "Quantifying cognitive workload and defining training time requirements using thermography." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-10132008-113238.

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38

Fike, Gregory Michael. "Using Infrared Thermography to Image the Drying of Polymer Surfaces." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4808.

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During the drying of a surface, the liquid evaporation acts to keep the temperature relatively constant, due to evaporative cooling. As the drying nears completion the liquid film begins to break, exposing areas that are no longer cooled through evaporation, which begin to heat. Although this heating can be measured with an Infrared (IR) camera, the sensitivity is often not sufficient to recognize the point at which the film breaks. Complicating the measurement is the changing emissivity that commonly occurs as objects dry. The sensitivity and emissivity issues can be addressed by analyzing
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39

Berglind, Henrik Oförstörande provning. "Nondestructive detection of glue deficiency in laminated wood using thermography /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/02.

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40

Poey, S. M. "Infrared thermography of the anterior eye during contact lens wear." Thesis, University of Manchester, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494480.

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Grimler, Henrik. "Investigating Urea Vaporization in a Controlled Environment Using Infrared Thermography." Thesis, KTH, Skolan för kemivetenskap (CHE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174360.

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As the emission legislation becomes more stringent, higher demands are put on the aftertreatment system in trucks. For dealing with nitrous oxides, AdBlue® (urea–water solution) is injected into the exhausts which evaporates and reduces nitrous oxides to nitrogen. At low exhaust temperatures, it is more difficult to evaporate the injected AdBlue® as the exhausts contain less energy. The injected solution may instead form a wall film. In this wall film, side reactions can occur which leads to the formation of deposits. This thesis aims at understanding how and when wall films and deposits are f
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Susa, Mirela. "Numerical Modeling of Pulse Thermography Experiments for Defect Characterisation Purposes." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26251/26251.pdf.

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43

Bharara, Manish. "Liquid crystal thermography in neuropathic assessment of the diabetic foot." Thesis, Bournemouth University, 2007. http://eprints.bournemouth.ac.uk/10470/.

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Primary aetiologic factors of diabetic foot disease include peripheral neuropathy and peripheral vascular disease. Assessment of circulation, neuropathy, and foot pressure is employed routinely to determine the risk of foot ulceration in the patient with diabetes mellitus. Routine neuropathic evaluation includes assessment of sensory loss in the plantar skin of the foot using both the Semmes Weinstein monofilament and the biothesiometer. Progressive degeneration of sensory nerve pathways is thought to affect thermoreceptors and mechanoreceptors. However, thermological measurements of the foot
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44

Jama, Bandile, Jasson Gryzagoridis, and Graham Wilson. "Aspects of thermography for non-destructive testing in mechanical maintenance." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2579.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2017.<br>Infrared thermography (IRT) is a non-contacting, non-destructive testing (NDT) technique that provides relatively fast results from inspections; for example, in the detection of defects in engineering components and in systems' condition monitoring. This study examines the use and possible effectiveness of infrared thermography for the detection of faults and defects in just a few aspects that one encounters in the vast mechanical maintenance arena. The study discusses three aspects of infrared thermogra
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Roberts, Matthew Thomas. "Induction Infrared Thermography for Non-Destructive Evaluation of Alloy Sensitization." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90668.

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The sensitization of stainless steel describes the process by which a high-carbon steel alloy is heated above a certain threshold (either naturally or artificially) followed by a cooling period during which chromium (one of the elements most responsible for providing stainless steel with its corrosion-inhibiting properties) forms new compounds with the carbon present in the steel. With the chromium being taken from the parent material to form these compounds, the corrosion-resistant properties are compromised, which can lead to corrosion, cracking, and broader failure. Currently, the accepted
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Miceli, Marybeth. "Assessment of Infrared Thermography for NDE of FRP Bridge Decks." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/36320.

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Statistics released in the fall 1989 showed that 238,357 (41%) of the nation's 577,710 bridges are either structurally deficient or functionally obsolete. New materials, such as fiber reinforced polymeric composites (FRP), are being suggested for use in bridge systems to solve some of the current problems. These materials are thought to be less affected by corrosive environmental conditions than conventional civil engineering materials. Therefore they may require less maintenance and provide longer life spans. More specifically, glass fiber reinforced vinyl ester matrix composites are cons
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Agarwal, Kevin. "Infrared Thermography for In-pile Imaging of Nuclear Fuel Cracking." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555343437656063.

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48

Sargent, Gerald R. "The use of thermography in clinical Thoracolumbar disease in Dachshunds." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1059.

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49

Zhang, Ying. "Thermal diffusivity evaluation for carbon-carbon composites using infrared thermography /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1456294291&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thesis (Ph. D.)--Southern Illinois University Carbondale, 2007.<br>"Department of Mechanical Engineering and Energy Processes." Includes bibliographical references (leaves 95-102). Also available online.
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Bainbridge, Bradley Glenn. "OPTIMIZATION OF TRANSIENT THERMOGRAPHY INSPECTION OF CARBON FIBER REINFORED PLASTICS." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/300.

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Abstract:
Infrared thermography was used to evaluate Carbon Fiber Reinforced Panels (CFRP) and optimize the inspection process so that a set of guidelines can be established in order to be efficient and effective. It has been shown in previous work that when a material is heated up the heat will diffuse through the material at a constant rate. However, if there is a defect in the material, such as a delamination, this defect will act like an insulator. When this happens the heat cannot penetrate as quickly as the rest of the material so the surface above the defect shows up hotter than the rest of the m
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