Relevant bibliographies by topics / Thermographic

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Thermographic'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Thermographic"

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Nowakowski, Antoni. "Problems of Active Dynamic Thermography Measurement Standardization in Medicine." Pomiary Automatyka Robotyka 25, no. 3 (September 13, 2021): 51–56. http://dx.doi.org/10.14313/par_241/51.

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Reliability of thermographic diagnostics in medicine is an important practical problem. In the field of static thermography, a great deal of effort has been made to define the conditions for thermographic measurements, which is now the golden standard for such research. In recent years, there are more and more reports on dynamic tests with external stimulation, such as Active Dynamic Thermography, Thermographic Signal Reconstruction or Thermal Tomography. The subject of this report is a discussion of the problems of standardization of dynamic tests, the choice of the method of thermal stimulation and the conditions determining the credibility of such tests in medical diagnostics. Typical methods of thermal stimulation are discussed, problems concerning accuracy and control of resulting distributions of temperature are commented. The best practices to get reliable conditions of measurements are summarized.
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Moustakidis, Serafeim, Athanasios Anagnostis, Apostolos Chondronasios, Patrik Karlsson, and Kostas Hrissagis. "Excitation-invariant pre-processing of thermographic data." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 232, no. 4 (April 23, 2018): 435–46. http://dx.doi.org/10.1177/1748006x18770888.

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There is a large number of industries that make extensive use of composite materials in their respective sectors. This rise in composites’ use has necessitated the development of new non-destructive inspection techniques that focus on manufacturing quality assurance, as well as in-service damage testing. Active infrared thermography is now a popular nondestructive testing method for detecting defects in composite structures. Non-uniform emissivity, uneven heating of the test surface, and variation in thermal properties of the test material are some of the crucial factors in experimental thermography. These unwanted thermal effects are typically coped with the application of a number of well-established thermographic techniques including pulse phase thermography and thermographic signal reconstruction. This article addresses this problem of the induced uneven heating at the pre-processing phase prior to the application of the thermographic processing techniques. To accomplish this, a number of excitation invariant pre-processing techniques were developed and tested in this article addressing the unwanted effect of non-uniform excitation in the collected thermographic data. Various fitting approaches were validated in light of modeling the non-uniform heating effect, and new normalization approaches were proposed following a time-dependent framework. The proposed pre-processing techniques were validated on a testing composite sample with pre-determined defects. The results demonstrated the effectiveness of the proposed processing algorithms in terms of removing the unwanted heat distribution effect along with the signal-to-noise ratio of the produced infrared images.
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Park, Jung Yul, Juno Park, Sang Dae Kim, and Dong Jun Lim. "Usefulness of Thermography in Evaluation of Patients with FBSS Following Radiofrequency Dorsal Root Ganglion Lesioning." Key Engineering Materials 321-323 (October 2006): 808–12. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.808.

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The changes in thermographic pattern were studied, in patients with persistent back and leg pain after surgery, to validate its significance in evaluating the clinical status following percutaneous radiofrequency (PRF) lesioning on dorsal root ganglion. A total of 90 patients with persistent back and leg (52 males, 38 females, mean age 46.2 years) with more than 6 months of duration following lumbar surgeries were enrolled into study. Thermography was performed before and after PRF procedures. PRF procedures were percutaneously done with C-arm guidance and adjustments from physiologic monitoring. Assessments included the clinical symptoms, signs and changes of thermographic pattern before and after PRF procedure. Minimal follow up period was 6 months. All patients tolerated the RF procedures without complications. Thermographic findings before procedures were agreeable to clinical and radiographic findings in 81(90%) of patients. PRF procedure provided substantial improvement of pain (>50% pain reduction) in 69(76.7%) and 63(70%) at 1 and 6 months following procedures. Thermographic findings in 80(88.9%) of these patients seemed to correlate with clinical improvement. However, 12 patients (13.3%) showed no significant thermographic changes despite clinical improvement. Clinical factors that were not statistically significant but were related to better outcome were younger age, unilateral pain, no significant dysesthesia, less number of operations, no instrumentation. Results of this study indicate that thermography may have a specific role in evaluating these patients, especially when comparing with clinical status.
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Wang, X. G., V. Crupi, X. L. Guo, and E. Guglielmino. "A thermography-based approach for structural analysis and fatigue evaluation." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 5 (September 23, 2011): 1173–85. http://dx.doi.org/10.1177/0954406211421998.

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The infrared thermography has been developed for Non-Destructive Testing (NDT), stress analysis, and in the last 10 years for metal fatigue assessment. The present research enables to realize these different research objectives all together thanks to an innovative experimental procedure, which includes NDT by lock-in thermography, thermoelastic stress analysis, and fatigue parameters assessment by Rapid Thermographic Method ( RTM). The developed procedure has been performed on a set of hole-notched specimens, achieving good results and predictions in a relatively short time. Moreover, the fatigue strength reduction coefficients of the specimens were determined by RTM. This thermography-based approach is dedicated for structural analysis and fatigue evaluation; it is an interesting attempt to apply different thermographic methods to a common research topic.
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Rodríguez-Gonzálvez, Pablo, and Manuel Rodríguez-Martín. "Design of a Didactical Activity for the Analysis of Uncertainties in Thermography through the Use of Robust Statistics as Teacher-Oriented Approach." Remote Sensing 13, no. 3 (January 24, 2021): 402. http://dx.doi.org/10.3390/rs13030402.

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The thermography as a methodology to quantitative data acquisition is not usually addressed in the degrees of university programs. The present manuscript proposes a novel approach for the acquisition of advanced competences in engineering courses associated with the use of thermographic images via free/open-source software solutions. This strategy is established from a research based on the statistical and three-dimensional visualization techniques over thermographic imagery to improve the interpretation and comprehension of the different sources of error affecting the measurements and, thereby, the conclusions and analysis arising from them. The novelty is focused on the detection of non-normalities in thermographic images, which is illustrates in the experimental section. Additionally, the specific workflow for the generation of learning material related with this aim is raised for asynchronous and e-learning programs. These virtual materials can be easily deployed in an institutional learning management system, allowing the students to work with the models by means of free/open-source solutions easily. Subsequently, the present approach will give new tools to improve the application of professional techniques, will improve the students’ critical sense to know how to interpret the uncertainties in thermography using a single thermographic image, therefore they will be better prepared to face future challenges with more critical thinking.
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Wen, Ching-Mei, Stefano Sfarra, Gianfranco Gargiulo, and Yuan Yao. "Edge-Group Sparse Principal Component Thermography for Defect Detection in an Ancient Marquetry Sample." Proceedings 27, no. 1 (September 27, 2019): 34. http://dx.doi.org/10.3390/proceedings2019027034.

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Nondestructive inspection (NDI) has immensely contributed to the restoration of historic and artistic works. As one of the most common used NDI methods, active thermography is an easy-to-operate and efficient technique. Principal component thermography (PCT) has been widely used to deal with thermographic data for enhancing the visibility of subsurface defects. Unlike PCT, edge-group sparse PCT introduced herein enforces sparsity of principal component (PC) loadings by considering the spatial connectivity of thermographic image pixels. The feasibility and effectiveness of this method is illustrated by the experimental results of the defect characterization in an ancient marquetry sample with a fir wood support.
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Hulewicz, Arkadiusz, Krzysztof Dziarski, and Grzegorz Dombek. "The Solution for the Thermographic Measurement of the Temperature of a Small Object." Sensors 21, no. 15 (July 23, 2021): 5000. http://dx.doi.org/10.3390/s21155000.

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This article describes the measuring system and the influence of selected factors on the accuracy of thermographic temperature measurement using a macrolens. This method enables thermographic measurement of the temperature of a small object with an area of square millimeters as, e.g., electronic elements. Damage to electronic components is often preceded by a rise in temperature, and an effective way to diagnose such components is the use of a thermographic camera. The ability to diagnose a device under full load makes thermography a very practical method that allows us to assess the condition of the device during operation. The accuracy of such a measurement depends on the conditions in which it is carried out. The incorrect selection of at least one parameter compensating the influence of the factor occurring during the measurement may cause the indicated value to differ from the correct value. This paper presents the basic issues linked to thermographic measurements and highlights the sources of errors. A measuring stand which enables the assessment of the influence of selected factors on the accuracy of thermographic measurement of electronic elements with the use of a macrolens is presented.
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Pieczonka, Łukasz, Mariusz Szwedo, and Tadeusz Uhl. "Investigation of the Effectiveness of Different Thermographic Testing Modalities in Damage Detection." Key Engineering Materials 558 (June 2013): 349–56. http://dx.doi.org/10.4028/www.scientific.net/kem.558.349.

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The paper deals with practical aspects of Thermographic Nondestructive Testing (TNDT). A comparative study of burst vibrothermography (VT) and pulsed thermography (PT) measurements is presented and discussed. The authors have developed a diagnostic system for thermographic testing of structures that was used to perform experiments. Supported test modalities include burst vibrothermography and pulsed thermography, among other techniques. The system comprises both hardware and software components facilitating TNDT inspections. Experimental testing has been performed, on a composite plate, using the developed diagnostic system and two of the supported test modalities. The goal of these investigations was to compare the performance of both TNDT methods in revealing Barely Visible Impact Damage (BVID) in a composite plate.
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López-Fernández, L., S. Lagüela, D. González-Aguilera, and H. Lorenzo. "Thermographic and mobile indoor mapping for the computation of energy losses in buildings." Indoor and Built Environment 26, no. 6 (March 15, 2016): 771–84. http://dx.doi.org/10.1177/1420326x16638912.

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A mobile indoor mapping system combined with infrared thermography was used for the acquisition of data needed for the quantification of heat loss through a building envelope by conduction; that is, temperature values and building geometry. The methodology presented orthothermograms to provide measurement of heat loss and thermographic images with geometric information. This way, not only the energy loss through the building envelope is provided, but also thermographic information regarding the existence of thermal pathologies, their location and their impact on the building can also be evaluated.
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Zhou, Jian Min, Jun Yang, and Qi Wan. "Review on Non-Destructive Testing Technique of Eddy Current Pulsed Thermography." Applied Mechanics and Materials 742 (March 2015): 128–31. http://dx.doi.org/10.4028/www.scientific.net/amm.742.128.

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This paper introduces the theory of eddy current pulsed thermography and expounds the research status of eddy current pulsed thermography in application and information extraction. Thermographic signal reconstruction, pulsed phase thermography, principal component analysis were introuduced in this paper and listed some fusion multiple methods to acquire information from infrared image. At last, it summarizes research progress, existing problem and deelopment of eddy current pulsed thermography.
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Dissertations / Theses on the topic "Thermographic"

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Ranson, Robert Marcus. "Investigation into thermographic phosphors." Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297737.

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Ratsakou, Almpion. "Multi-physical modeling of thermographic inspection methods and fast imaging Fast models dedicated to simulation of eddy current thermography Fast simulation approach dedicated to infrared thermographic inspection of delaminated planar pieces Model based characterisation of delamination by means of thermographic inspection." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS002.

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L’inspection thermographique est une technique populaire de contrôle non destructif qui fournit des images de distributions de température sur de grandes étendues aux surfaces des pièces testées. Détecter les délaminations entre couches métalliques est le sujet ici. La simulation de ces inspections contribue en effet à compléter les études expérimentales, à évaluer les performances en termes de détection, et à être support d'algorithmes basés sur modèles. On se focalise sur un modèle semi-analytique basé sur un développement tronqué en fonctions propres par région. Le problème est résolu dans le domaine de Laplace en temps, et la distribution de température approximée par un développement sur une base produit tensoriel. Les sources considérées sont des lampes flash, mais aussi des sources courants de Foucault (conduisant à un couplage électromagnétisme et chaleur). La description des délaminages sous forme de minces couches d'air se révèle équivalente à l'introduction d'une résistance superficielle au flux de chaleur permettant le traitement via l'approche modale sans discrétisation supplémentaire. Des calculs complémentaires par des codes commercial (méthode des éléments finis) et interne (technique d'intégration finie) confirment l'exactitude. Puis une grande attention est donnée à l'imagerie et la détection. Une procédure en deux étapes est conçue : débruitage des signaux bruts et détection de tout éventuel défaut en utilisant une reconstruction de signal thermographique conduisant à une haute résolution spatiale et temporelle dans le plan transverse, complété par une détection de frontière, puis optimisation itérative, les résultats de la première étape étant utilisées pour la régularisation d'un schéma moindres carrés afin de caractériser épaisseurs et profondeurs. Tout ce qui précède est illustré par de nombreuses simulations numériques dans des conditions proches de l'application
Thermographic inspection is a popular nondestructive testing (NdT) technique that provides images of temperature distribution over large areas at surfaces of tested workpieces. Detecting delaminations between metallic layers is the matter here. Simulation of these inspections indeed helps to complement experimental studies, evaluate performance in terms of detection and support model-based algorithms. A semi-analytical model based on a truncated region eigenfunction expansion for simulation of thermographic inspection is focused onto. The problem is solved in the Laplace domain w.r.t time, and the temperature distribution approximated by expanding it on a tensor product basis. Considered sources are lamps providing thermal excitation but may also be eddy current sources (leading to a coupled electromagnetic and heat problem). The description of the delaminations as thin air gaps between the workpiece layers proves to be equivalent with introduction of a surface resistance to the heat flow, enabling treatment via the applied modal approach without additional discretisation. Complementary computations by industry (Finite Element Method) and in-house (Finite Integration Technique) codes confirm the accuracy of the developments. Then, much attention is put on imaging and detection. A two-step procedure is devised, first denoising of raw signals and detection of any possible defect using a thermographic signal reconstruction leading to high spatial and temporal resolution in the transverse plane, completed by proper edge detection, second an iterative optimization being employed, with results of the first step used for regularization of a least-square scheme to characterize thicknesses and depths. All the above is illustrated by comprehensive numerical simulations in conditions close to practice
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Alvandipour, Mehrdad. "Thermographic Image Analysis with Gabor Filters." Thesis, Southern Illinois University at Edwardsville, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10616514.

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We use thermography and pattern classification techniques to classify three different pathologies in veterinary images. The Long Island Veterinary Specialists (LIVS) have provided thermographic images of both normal and diseased animals. The temperature data is linearly remapped to 256 gray levels using the temperature range of 19 to 40 degrees C.The three pathologies are ACL rupture disease, bone cancer, and feline hyperthyroid. The diagnosis of these diseases usually involves radiology and laboratory tests while the method that we propose uses thermographic images and image analysis techniques and is intended for use as a prescreening tool. First, Gabor filters are used to filter the images in each category of pathologies and then various features are extracted and used for classification into normal and abnormal classes. Gabor filters are linear filters that can be characterized by the two parameters, wavelength λ and orientation &thetas;. With two different wavelength and five different orientations, a total of ten different filters were studied. Different combinations of camera views, filters, feature vectors, normalization methods, and classification methods, produce different tests that were examined and the sensitivity, specificity and success rate for each test were produced. Using the Gabor features alone, sensitivity, specificity, and overall success rates of 85% for each of the pathologies was achieved.

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Höglund, Kristofer. "Non-destructive Testing Using Thermographic Image Processing." Thesis, Linköpings universitet, Datorseende, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-89862.

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In certain industries, quality testing is crucial, to make sure that the components being manufactured do not contain any defects. One method to detect these defects is to heat the specimen being inspected and then to study the cooling process using infrared thermography. The explorations of non-destructive testing using thermography is at an early stage and therefore the purpose of this thesis is to analyse some of the existing techniques and to propose improvements. A test specimen containing several different defects was designed specifically for this thesis. A flash lamp was used to heat the specimen and a high-speed infrared camera was used to study both the spatial and temporal features of the cooling process. An algorithm was implemented to detect anomalies and different parameter settings were evaluated. The results show that the proposed method is successful at finding the searched for defects, and also outperforms one of the old methods.
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Kaltmann, Deena, and s8907403@student rmit edu au. "Quantitative Line-Scan Thermographic Evaluation of Composite Structures." RMIT University. Aerospace, Mechanical & Manufacturing Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091019.101029.

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This MEng (Master of Engineering) research thesis evaluates the capabilities and limitations of line-scan thermography for the non-destructive evaluation of composite structures containing hidden defects. In simple terms, line-scan thermography is a state-of-the-art technique in which a focused line of thermal energy is transmitted into a material. Line-scan thermography has great potential for the rapid and low cost non-destructive inspection of composite structures for aircraft, automobiles and ships. In this project, theoretical research exploring the heat transfer physics was undertaken in conjunction with experimental studies to develop an optimum inspection regime for line-scan thermography. The capability of line-scan thermography to detect impact damage in carbon/epoxy laminates was experimentally investigated in Chapter 3. From the impact side, in all materials, line-scan thermography overestimated the size of the impact damage whereas flash thermography underestimated the size. There was a close relationship between the ultrasonic profile and the line-scan thermographic thermal response curve. New experimental data has been produced and analysed for the ability of line-scan thermography to determine the defect as well as the defect size. It was found that line-scan thermography was able to distinguish back drilled holes, but it was not possible to determine accurate defect sizing due to the depth of the holes from the inspected surface and the limitations associated with the line-scan thermographic apparatus itself. There was excellent correlation between the C-scan ultrasonics intensity curves and the line-scan thermographs as well as excellent correlation with the theoretical results. The relationship between line-scan thermography and foreign body objects were experimentally investigated for carbon/epoxy composites. A major limitation found with line-scan thermography is its limited depth penetration, which is highlighted in the foreign object study using 6 mm and 13 mm diameter Teflon® discs and 13 mm Teflon® strips embedded in carbon/epoxy laminates. Depth penetration allowed only 2 mm resolution for the 13 mm diameter discs and 1.5 mm resolution for the 6 mm discs in a composite panel. The results of the investigation of stainless steel shim objects in carbon/epoxy laminates reveal that line-scan thermography is capable of determining their presence and size close to the surface. There was also excellent correlation between the ultrasonic response curve and the line-scan thermographic intensity curve. The results of the investigation of thermoplastic film foreign body objects in carbon/epoxy laminates show that at present line-scan thermography does not have the capability to determin e such defects. Experimental results show that line-scan thermography is capable of detecting large voids, back drilled holes, some foreign body objects, and impact damage. However, the ability of line-scan thermography to measure the defect dimensions is dependent on the size and type of damage, the distance from the line source, the depth of the defect, and the type of composite material.
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Qudairat, E. "Thermographic evaluation of nerve injury following facial fracture." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479394.

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Biagioni, Paul A. "Thermographic assessment of herpes labialis infection in humans." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394882.

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COSTA, HUMBERTO SILVINO ALVES DA. "CALIBRATION OF A THERMOGRAPHIC CAMERA FOR PRODUCTION PLANNING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11021@1.

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INSTITUTO NACIONAL DE METROLOGIA, QUALIDADE E TECNOLOGIA
LIGHT
O aumento da temperatura de equipamentos de produção de energia elétrica é um indicativo de seu mau funcionamento ou da necessidade de uma manutenção preventiva antes que limites críticos sejam alcançados. Uma técnica utilizada para o diagnóstico é a interpretação do sinal infravermelho captado por uma câmera que fornece uma imagem do campo visual em questão, normalmente conhecida por termovisor. Neste trabalho foi desenvolvida uma metodologia para interpretar o seu sinal tendo em vista o planejamento de manutenção. Inicialmente, foi projetado um dispositivo para calibração de um termovisor na PUC-Rio. Ele consta de um bloco cilíndrico de latão, imerso em um banho de temperatura controlada. A seguir, o termovisor foi calibrado no corpo negro do INMETRO. Através da comparação entre os valores medidos pelo termovisor na PUC-Rio e no INMETRO, a emissividade da superfície pode ser determinada, e ajustada no instrumento para medição de temperatura com superfícies semelhantes. Com o termovisor calibrado, foi feita uma análise do impacto da incerteza de medição de temperatura sobre os procedimentos atualmente empregados pela concessionária de energia elétrica, LIGHT ENERGIA S.A., de modo a otimizar os procedimentos de manutenção de seus equipamentos.
The operating temperature increase of electric energy production equipments is a sign of poor performance or the need of maintenance before critical limits be attained. As a diagnostic tool, the interpretation of the infrared signal, as received by a camera that registers the image of a target, is often used and referred as a thermographic camera. In this work, a methodology was developed to interpret the infrared signal from a camera, aiming a maintenance planning. Initially, a device was designed to calibrate the thermographic camera at PUC-Rio. It consists of a cylindrical brass block, placed inside a controlled temperature bath, having its upper surface painted black and placed about 3 mm above the liquid surface of the bath. Holes were drilled radially, slightly bellow the block upper surface, so that its temperature could be measured by inserted thermocouples. Next, the instrument was calibrated with a black body at INMETRO. The surface emissivity was calculated as a result of the comparison between the calibration results in PUC-Rio and INMETRO. After calibration, the impact of the uncertainty of several parameters in temperature measurement was calculated, following the procedures that are presently adopted by the electric energy utility company LIGHT ENERGIA S.A., so that to optimize the maintenance procedure of equipments.
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Watkins, Michael L. "The thermographic nondestructive evaluation of iron aluminide green sheet." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539623953.

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The recent development of manufacturing techniques for the fabrication of thin iron aluminide sheet requires advanced quantitative methods for on-line inspection. An understanding of the mechanisms responsible for flaws and the development of appropriate flaw detection methods are key elements in an effective quality management system. The first step in the fabrication of thin FeAl alloy sheet is the formation of a green sheet by cold rolling FeAl powder mixed with organic binding agents. The green sheet composite has a bulk density, which is typically less than about 3.6 g/cc. The finished sheet, with a density of about 6.1 g/cc, is obtained using a series of process steps involving binder elimination, densification, sintering, and annealing. Non-uniformities within the green sheet are the major contributor to material failure in subsequent sheet processing and the production of non-conforming finished sheet. The production environment and physical characteristics of the composite provide for unique challenges in developing a rapid nondestructive inspection capability. The method must be non-contact due to the fragile nature of the composite. Limited access to the material also demands a one-sided inspection technique. An active thermographic method providing for 100% on-line inspection within an industrial, process has been developed. This approach is cost competitive with alternative technologies, such as x-ray imaging systems, and provides the required sensitivity to the variations in material composition. The mechanism of flaw formation and the transformation of green sheet flaws into defects that appear in intermediate and finished sheet products are described. A mathematical model which describes the green sheet heat transfer propagation, in the context of the inspection technique and the compact heterogeneity, is also presented. The potential for feedback within the production process is also discussed.
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Emmanuel, Jovine. "A high-throughput thermographic screen for model heterogeneous catalysts." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/374675/.

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Despite the fact that it is now accepted that the particle size and the support in heterogeneous catalysts strongly influences the activity and selectivity of the catalysts, it has been a challenge to measure such effects systematically, especially on model systems. A high-throughput (paral-lel) thermographic screening methodology is described here, which allows such measurements to be made. A screening chip was designed and fabricated in order to produce multiple fields of low stress silicon nitride membranes that exhibit low thermal conductivity and heat capacity. The heat generated on model, supported catalysts in an exothermic reaction deposited on the membranes could then be monitored using a thermal (infra-red) imaging camera. The tempera-ture of the catalyst under steady state reaction conditions was used as a measure of mass or spe-cific catalytic activity. The effectiveness of the screening method to determine catalytic activity was demonstrated for titania supported platinum and gold model catalysts by studying the CO oxidation reaction. For both supported metals we observe strong particle size effects in the ac-tivity. Platinum nanoparticles in the size range of ca. 1 to 8 nm and gold nanoparticles between ca. 1 to 6 nm in size were deposited on an amorphous titania support, as determined from transmission electron microscope image analysis. The reaction of CO and O2 on these model catalysts was measured using the thermographic screening method. The model, supported catalysts were also characterised by TEM and XPS both before and after reaction. The reaction over titania sup-ported platinum was investigated in the temperature range of 80 oC to 240 oC and pressure range 0.072 mbar to 2.4 mbar. The turnover frequency (TOF) and specific mass activity of Pt for CO oxidation increased monotonically with decreasing particle size by a factor of 17. XPS showed that there was no change in the particle size distribution during the reactions. While there is no apparent consensus in the literature concerning a particle size effect for this system, this result is in good agreement with recent findings on high area supported catalysts, finding a seven-fold increase in activity between 10 nm and 1nm particle sizes. The CO oxidation on titania supported gold nanoparticles was investigated at 80 oC and 170 oC and pressure ranging between 0.06 mbar and 1.5 mbar. The TOF and specific mass activity in-creased monotonically with decreasing particle size by a factor of 19. XPS again showed that there was no significant change in the particle size distribution during the reactions. While there is no apparent consensus in the literature concerning the activity trend with particle size for this system, this result is consistent with most data published in the literature. The absolute activities measured at low temperature (ca. 80 oC) and pressure (0.11 mbar) in this study for Au/TiO2 nanoparticle catalyst are higher than Pt/TiO2 nanoparticles over the ranges of particle sizes investigated.
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Books on the topic "Thermographic"

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Rein, Harry. Thermographic evidence of soft tissue injuries. Colorado Springs, Colo: Shepard's/McGraw-Hill, 1987.

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Walker, James L. Thermographic qualification of graphite/epoxy instrumentation racks. [Washington, DC: National Aeronautics and Space Administration, 1998.

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Živčák, Jozef. Methodology, Models and Algorithms in Thermographic Diagnostics. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Živčák, Jozef, Radovan Hudák, Ladislav Madarász, and Imre J. Rudas. Methodology, Models and Algorithms in Thermographic Diagnostics. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38379-3.

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Silverman, Howard L. Clinical thermographic technique: A primer for physicians and technicians. Clayton, Ga: Rabun Chiropractic Clinic, 1987.

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Sprotte, Günter. Thermographic Investigations into the Physiological Basis of Regional Anaesthesia. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-69268-0.

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Thermographic investigations into the physiological basis of regional anaesthesia. Berlin: Springer-Verlag, 1985.

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International Conference on Thermal Infrared Sensing for Diagnostics and Control (1985 Cambridge, Mass.). An International Conference on Thermal Infrared Sensing for Diagnostics and Control (Thermosense VIII): September 17-20, 1985, Cambridge, Massachusetts. Edited by Kaplan Herbert, American Society for Testing and Materials., and Society of Photo-optical Instrumentation Engineers. Bellingham, Wash: SPIE--the International Society for Optical Engineering, 1986.

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Drozdov, V. A. Termografii͡a︡ v stroitelʹstve. Moskva: Stroĭizdat, 1987.

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Gladman, Aviv Shlomo. Infrared thermographic measurement of the SAR patterns of interstitial hyperthermia applicators. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

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Book chapters on the topic "Thermographic"

1

Živčák, Jozef, Ladislav Madarász, Radovan Hudák, and Imre J. Rudas. "Thermographic Diagnostics." In Methodology, Models and Algorithms in Thermographic Diagnostics, 7–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38379-3_2.

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Weik, Martin H. "thermographic process." In Computer Science and Communications Dictionary, 1776. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19508.

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Gooch, Jan W. "Thermographic Nondestructive Testing." In Encyclopedic Dictionary of Polymers, 744. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11788.

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Gooch, Jan W. "Thermographic-Transfer Process." In Encyclopedic Dictionary of Polymers, 744. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11789.

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Rösner, H., U. Netzelmann, J. Hoffmann, W. Karpen, V. Kramb, and N. Meyendorf. "Thermographic Materials Characterization." In Nondestructive Materials Characterization, 246–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-08988-0_9.

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Gaussorgues, G. "Advances in Thermographic Systems." In Infrared Thermography, 492–501. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0711-2_17.

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Weik, Martin H. "thermographic document copying machine." In Computer Science and Communications Dictionary, 1776. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19507.

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Salerno, A., D. Wu, G. Busse, and J. Rantala. "Thermographic Inspection with Ultrasonic Excitation." In Review of Progress in Quantitative Nondestructive Evaluation, 345–52. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5947-4_45.

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Quinn, M. T., J. R. Hribar, R. L. Ruiz, and G. F. Hawkins. "Thermographic Detection of Buried Debonds." In Review of Progress in Quantitative Nondestructive Evaluation, 1117–23. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0979-6_29.

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Batsale, Jean-Christophe, André Chrysochoos, Hervé Pron, and Bertrand Wattrisse. "Thermographic Analysis of Material Behavior." In Full-Field Measurements and Identification in Solid Mechanics, 439–68. Hoboken, NJ USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118578469.ch16.

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Conference papers on the topic "Thermographic"

1

Nagasawa, Akinori, Kazuichi Katoh, and Yasuhiko Ohhashi. "New thermographic imaging techniques: panoramic and multiaspect thermography." In Medical Imaging VI, edited by Rodney Shaw. SPIE, 1992. http://dx.doi.org/10.1117/12.59403.

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G Schwartz, Robert. "Thermographic Findings, Thermographic Impressions and Clinical Impressions." In Quantitative InfraRed Thermography Asia 2017. QIRT Council, 2017. http://dx.doi.org/10.21611/qirt.2017.010.

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Klein, Matthieu T., Clemente Ibarra-Castanedo, Abdelhakim Bendada, and Xavier P. Maldague. "Thermographic signal processing through correlation operators in pulsed thermography." In SPIE Defense and Security Symposium, edited by Vladimir P. Vavilov and Douglas D. Burleigh. SPIE, 2008. http://dx.doi.org/10.1117/12.777002.

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Ljungberg, Sven-Ake. "Aerial Thermography - Cartographic Presentation Of Thermographic Data For Building Applications." In SPIE 1989 Technical Symposium on Aerospace Sensing, edited by Gregory B. McIntosh. SPIE, 1989. http://dx.doi.org/10.1117/12.953380.

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Wang, Quan, Laura Boccanfuso, Beibin Li, Amy Yeo-jin Ahn, Claire E. Foster, Margaret P. Orr, Brian Scassellati, and Frederick Shic. "Thermographic eye tracking." In ETRA '16: 2016 Symposium on Eye Tracking Research and Applications. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2857491.2857543.

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Wiecek, B., M. Grecki, and J. Pacholik. "Computer-based thermographic system." In 1992 Quantitative InfraRed Thermography. QIRT Council, 1992. http://dx.doi.org/10.21611/qirt.1992.010.

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Beyrau, Frank. "Thermographic Particle Image Velocimetry." In Optical Instrumentation for Energy and Environmental Applications. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/e2.2013.em1a.2.

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Fond, Benoit, Christopher Abram, and Frank Beyrau. "Thermographic Particle Image Velocimetry." In Laser Applications to Chemical, Security and Environmental Analysis. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/lacsea.2014.lm1d.1.

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McKeever, Mark M., Michael R. Cates, Stephen W. Allison, David L. Beshears, Alfred Akerman, Matthew B. Scudiere, and James E. Parks. "The Thermographic Phosphor Labkit." In 2015 Conference on Laboratory Instruction Beyond the First Year. American Association of Physics Teachers, 2015. http://dx.doi.org/10.1119/bfy.2015.pr.017.

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Shepard, Steven M. "Advances in thermographic NDT." In AeroSense 2003, edited by Bjorn F. Andresen and Gabor F. Fulop. SPIE, 2003. http://dx.doi.org/10.1117/12.498157.

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Reports on the topic "Thermographic"

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Tobin, K., M. Cates, D. Beshears, J. Muhs, G. Capps, D. Smith, W. Turley, et al. Engine testing of thermographic phosphors. Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/6781610.

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Cunningham, D., S. Allison, and D. Smith. Thermographic properties of eight blue-emitting phosphors. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/10145884.

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Cunningham, D., S. Allison, and D. Smith. Thermographic properties of eight blue-emitting phosphors. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6854917.

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Cates, M. R., K. W. Tobin, and D. B. Smith. Evaluation of thermographic phosphor technology for aerodynamic model testing. Office of Scientific and Technical Information (OSTI), August 1990. http://dx.doi.org/10.2172/6318237.

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Dimova-Gabrovska, Mariana. Thermographic Assessment of Structural Analysis in Patients with Temporomandibular Disorders. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, May 2018. http://dx.doi.org/10.7546/crabs.2018.05.17.

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Vance, Samuel, Matthew Richards, and Matthew Walters. Evaluation of roof leak detection utilizing unmanned aircraft systems equipped with thermographic sensors. Engineer Research and Development Center (U.S.), January 2019. http://dx.doi.org/10.21079/11681/31239.

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Ginsberg, I. W. An aerial multispectral thermographic survey of the Oak Ridge Reservation for selected areas K-25, X-10, and Y-12, Oak Ridge, Tennessee. Office of Scientific and Technical Information (OSTI), October 1996. http://dx.doi.org/10.2172/477551.

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Perez, Ignacio, and Paul Kulowitch. Thermography for Characterization of Corrosion Damage. Fort Belvoir, VA: Defense Technical Information Center, April 1999. http://dx.doi.org/10.21236/ada375755.

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Barrett, Alan H. Improvements in Techniques of Microwave Thermography. Fort Belvoir, VA: Defense Technical Information Center, June 1985. http://dx.doi.org/10.21236/ada197064.

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Perez, Ignacio, paul Kulowitch, and Steven Shepard. Modeling of Pulsed Thermography in Anisotropic Media. Fort Belvoir, VA: Defense Technical Information Center, August 1999. http://dx.doi.org/10.21236/ada368628.

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