Thematische Bibliographien / Testis Thermography

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  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
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Auswahl der wissenschaftlichen Literatur zum Thema „Testis Thermography“

Autor: Grafiati
Veröffentlicht am 4. Juni 2021
Zuletzt aktualisiert am 31. Januar 2023

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Zeitschriftenartikel zum Thema "Testis Thermography"

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Fernandez, Nicolas, Armando Lorenzo, Anne-Sophie Blais und Clyde Matava. „Thermographic Patterns for Real-time Intraoperative Monitoring of Testicular Reperfusion Following Surgical Testicular Detorsion“. Revista Urología Colombiana / Colombian Urology Journal 27, Nr. 03 (29.05.2018): 294–98. http://dx.doi.org/10.1055/s-0038-1656559.

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AbstractA 5-year-old patient presents to the emergency department with testicular torsion. Intraoperative sequential infrared thermographic images were registered in real-time using a FLIR One (FLIR Systems, Inc., Wilsonville, OR, US) infrared camera. The temperatures of the scrotum and the testis prior to scrotal exploration were 43.6°C on the affected side, and 41.7°C on the contralateral side. The core temperature of the patient was 36.8°C. Immediately after the tunica vaginalis had been opened and the testis had been brought out through the incision, the temperature of the testicle was 31.5°C. After 30 seconds of being detorted, the temperature increased to 34.3°C. The use of intraoperative infrared thermographic imaging helps to detect discrete changes in testicular temperature, which suggests it may be useful to objectively assess reperfusion. Future studies will require more patients to correlate postoperative blood flow to the injured testis as well as volume changes after surgery to see if the intraoperative thermography findings can be used as a predictive tool for postoperative outcomes.
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Paranzini, C. S., G. S. Cardoso, A. K. Souza, F. M. Perencin, C. A. A. Melanda, A. P. F. R. L. Bracarense und M. I. M. Martins. „Use of infrared thermography to evaluate the inflammatory reaction in cat testis after intratesticular injection of 0.9% NaCl or 20% CaCl2 with 1% lidocaine“. Arquivo Brasileiro de Medicina Veterinária e Zootecnia 71, Nr. 3 (Juni 2019): 929–38. http://dx.doi.org/10.1590/1678-4162-10741.

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ABSTRACT Due to the doubts and questions about the inflammatory reaction caused by chemical castration, this study aimed to use infrared thermography to detect, evaluate and monitor the inflammatory reaction caused by the intratesticular injection of calcium chloride (CaCl2) 20% with lidocaine 1%. For this, thermographic measurements were taken before (M0), 10 minutes (M1), 1 and 6 hours (M2 and M3), for 7 consecutive days (M4 to M10), at 15 (M11), 30 (M12) and 60 (M13) days after intratesticular injection. Additionally, changes to testicular tissue and effects over spermatogenesis were evaluated by andrological exam before (M0) and 60 days (M13) after intratesticular injection. All cats were orchiectomized at M13, and testicles were submitted to histological analysis. CaCl2 (20%) with lidocaine (1%) administration produced testicular tissue damage and interfered with the spermatogenesis in 70% of treated cats without exacerbating the inflammatory reaction or impairing the cat’s welfare. It was concluded that thermographic evaluation is a useful, efficient, easy and quick method to diagnose and monitor cat testicular inflammatory reactions.
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Vieira Neto, Maurício Francisco, Bruna Farias Brito, Marcimar Silva Sousa, Maria Gorete Flores Salles, Aderson Martins Viana Neto, José Ferreira Nunes, Vicente José de Figueirêdo Freitas und Airton Alencar de Araujo. „Testicular thermography and seminal quality in bucks submitted to intermittent scrotal insulation in a tropical climate“. Semina: Ciências Agrárias 42, Nr. 2 (24.02.2021): 721–34. http://dx.doi.org/10.5433/1679-0359.2021v42n2p721.

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Testicular degeneration is highly prevalent in ruminants reared in a tropical climate in Brazil. It is therefore necessary to assess semen quality periodically in this animals. The objective of this work was to define standards images (thermograms) by using infrared thermography (TIV), associated with computerized seminal evaluation (CASA) to predict testicular alterations in a non-invasive way. For this, 10 goat males were selected, and testis insulated to evaluate the seminal quality and testicular superficial temperature recorded in four different moments: before, during and early and later after insulation. Semen collections and rectal temperatures (TR) and superficial testis (TS) by TIV were assessed for 60 days after insulation. Data were expressed in media and standard errors and analysis of variation (ANOVA) with comparison between the moments using Tukey test at 5% of probability. Changes in seminal quality followed the same standard of changes in TS, with no influence of the latter one on rectal temperature. The mean testicular temperature increased more than 2 degrees above the normal mean testis temperature, with significant increasing (p <0.05) in the moment during in relation to the moments before and post insulation, and concomitantly reduction in seminal parameters and almost normal return to 60 days post insulation. These changes in testis surface temperatures associated with semen analysis allowed to get patterns images of testicular degeneration, permitting to predict by TIV testis alterations for later assess of seminal quality.
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Nowakowski, Antoni. „Problems of Active Dynamic Thermography Measurement Standardization in Medicine“. Pomiary Automatyka Robotyka 25, Nr. 3 (13.09.2021): 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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Garrido, Iván, Susana Lagüela, Stefano Sfarra, Hai Zhang und Xavier P. V. Maldague. „Automatic Detection and Delimitation of Internal Moisture in Mosaics from Thermographic Sequences. Experimental Tests“. Proceedings 27, Nr. 1 (17.09.2019): 7. http://dx.doi.org/10.3390/proceedings2019027007.

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InfraRed Thermography, IRT, is one of the most recent techniques to monitor heritage elements, finding existing pathologies in order to implement the required maintenance tasks. However, most IRT results on cultural heritage are interpreted subjectively. Then, this work presents a methodology for the automatic detection and delimitation of moisture inside a heritage element, a mosaic in this case, from a thermographic sequence, based on the analysis of the temperature distribution of the thermal images acquired. Comparing the experimental test results with typical thermographic algorithms, the detection performance of the algorithm proposed was similar, but the new method is able to delimit and automate the whole process.
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Chudzicka-Adamczak, Marta. „Thermal insulation of a public transport vehicle - tram with the use of thermal imaging measurements“. AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 20, Nr. 1-2 (28.02.2019): 171–75. http://dx.doi.org/10.24136/atest.2019.030.

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The article presents the possibility of using thermography to assess the quality of thermal insulation of public transport vehicles on the example of a tram. Such tests are aimed at detecting places where there is an uncontrolled heat loss. Thermographic tests were carried out for two trams: from the eighties of the twentieth century and from the present.
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Galla, Stanisław, und Alicja Konczakowska. „Application of Infrared Thermography to Non-Contact Testing of Varistors“. Metrology and Measurement Systems 20, Nr. 4 (01.12.2013): 677–88. http://dx.doi.org/10.2478/mms-2013-0058.

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Abstract Testing of varistors using thermography was carried out in order to assess their protective properties against possible overvoltage phenomena in the form of high-level voltage surges. An advantage of the thermography technique is non-contact temperature measurement. It was proposed to assess the properties of varistors working in electronic devices as protective elements, on the basis of estimating temperature increments on varistor surfaces, registered by an infrared camera during surge resistance tests with standard voltage levels. To determine acceptable temperature increments on a tested varistor, preliminary testing was performed of P22Z1 (Littelfuse) and S07K14 (EPCOS) type varistors, working first at a constant load and presently during surge tests,. The thermographic test results were compared with measured varistor capacity values before and after tests. It was found that recording with thermography temperature increments greater than 6°C for both P22Z1 and S07K14 varistor types detects total or partial loss of varistor protective properties. The test results were confirmed by assessment of protective properties of varistors working in output circuits of low nominal voltage devices.
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Lipski, Adam, und Dariusz Boroński. „Use of Thermography for the Analysis of Strength Properties of Mini-Specimens“. Materials Science Forum 726 (August 2012): 156–61. http://dx.doi.org/10.4028/www.scientific.net/msf.726.156.

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This paper presents sample applications of passive infrared thermography for research on temperature changes of mini-specimens resulting from monotonously increasing or cyclically variable mechanical load. The MFS system developed in the Department of Machine Design at the University of Technology and Life Sciences in Bydgoszcz (Poland) and designed for testing mechanical properties of microelements were used for tests. The MFS system ensures nanometric measurement accuracy of many static and fatigue-related material properties, including, i.a., static tension curves, cyclic strain curves, fatigue life curves as a function of force, stress and strain. Measurements of the mini-specimens temperature were performed using thermographic camera equipped with microscope lens. The tests have shown that research on the passive infrared thermography may be successfully applied for determining strength properties of materials in micro scale. The used research instrumentation is characterized by sufficient sensitivity and resolution (camera with the microscope lens), while the MFS system ensures accurate load and position control.
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Kaledin, V. O., E. A. Vyachkina, D. A. Galdin, O. N. Budadin und S. O. Kozelskaya. „ELECTRIC POWER THERMOGRAPHY CONSTRUCTIONS MADE OF COMPOSITE MATERIALS“. Kontrol'. Diagnostika, Nr. 254 (2019): 22–27. http://dx.doi.org/10.14489/td.2019.08.pp.022-027.

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A new control technology for electrically conductive composite materials (electric power thermography) is proposed, based on the excitation of a thermal field in the defect area (cracks) by passing an electric current with simultaneous application of a power load, which makes it possible to detect “stuck” cracks in composite materials using rather simple technical means. Theoretical and experimental studies have shown the possibility of identifying delaminations and cracks in the grids of a complex structure of composite materials using electrodiagnosis with temperature field measurement. The resulting temperature anomalies in the process of monitoring the proposed method (electric power thermography) reach a value of several degrees (regardless of the initial characteristics of cracks – before the application of a power load), which allows you to record temperature fields with quite simple and, therefore, cheap thermographic devices. The applied power load to the monitored product can be carried out simultaneously with the workload of the product, which allows them to be monitored in the process of strength power-producing tests.
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Liu, Kaixin, Fumin Wang, Yuxiang He, Yi Liu, Jianguo Yang und Yuan Yao. „Data-Augmented Manifold Learning Thermography for Defect Detection and Evaluation of Polymer Composites“. Polymers 15, Nr. 1 (29.12.2022): 173. http://dx.doi.org/10.3390/polym15010173.

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Infrared thermography techniques with thermographic data analysis have been widely applied to non-destructive tests and evaluations of subsurface defects in practical composite materials. However, the performance of these methods is still restricted by limited informative images and difficulties in feature extraction caused by inhomogeneous backgrounds and noise. In this work, a novel generative manifold learning thermography (GMLT) is proposed for defect detection and the evaluation of composites. Specifically, the spectral normalized generative adversarial networks serve as an image augmentation strategy to learn the thermal image distribution, thereby generating virtual images to enrich the dataset. Subsequently, the manifold learning method is employed for the unsupervised dimensionality reduction in all images. Finally, the partial least squares regression is presented to extract the explicit mapping of manifold learning for defect visualization. Moreover, probability density maps and quantitative metrics are proposed to evaluate and explain the obtained defect detection performance. Experimental results on carbon fiber-reinforced polymers demonstrate the superiorities of GMLT, compared with other methods.
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Dissertationen zum Thema "Testis Thermography"

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Yaeram, Jakrit. „The effect of whole body heating on testis morphology and fertility of male mice“. Title page, table of contents and summary only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phj259.pdf.

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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 reconstruction and thermal signal reconstruction (TSR), several contrast image definitions, differential absolute contrast (DAC), correlated contrast, derivative images, principal component thermography (PCT), dynamic thermal tomography (DTT), pulse phase thermography (PPT), tying-correlation analysis (FCA), Hough transform thermography (PTHTa), and transmission line matrix tying algorithm (TLMFa). New processing techniques are developed and evaluated against the existing techniques. The ability of ash thermography coupled with processing techniques to reveal subsurface writings and document strikeouts is evaluated. Flash thermography parameters are evaluated to determine most eeffective value for the document. In summary, this thesis reports the following contributions to the existing scientific knowledge: 1. A comprehensive analysis of existing pulsed thermography processing techniques. 2. New pulsed thermography processing techniques that improve upon the results of the existing techniques were developed. 3. A proof-of-concept for detecting subsurface ink writings in documents. 4. Varies the capability of pulsed thermography techniques to detect document strike- outs. 5. Demonstrates the ability to enhance surface writings based on differences in thermal characteristics when optical characteristics do not vary significantly. 6. Demonstrates that pulsed thermography significantly improves upon multi-spectral imaging for subsurface and surface writing enhancement. 7. Provides an evaluation of ash thermography parameters for the most effective document imaging.
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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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Groz, Marie-Marthe. „Reconstruction 3D de sources de chaleur volumiques à partir des champs de température de surface mesurés par thermographie InfraRouge“. Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0135.

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L'évaluation et le contrôle non destructifs (E.C.N.D.) des matériaux et des structures sont une problématique industrielle très importante dans les domaines du transport, de l'aéronautique et du spatial, et dans le milieu médical. La thermographie infrarouge active est une technique d'E.C.N.D qui consiste à apporter une excitation extérieure afin d'entraîner une élévation de température dans le matériau, puis à évaluer le champ de température résultant à la surface. Cependant, les excitateurs thermiques utilisés (lampes flash, halogènes, lasers) agissent uniquement sur la surface du matériau. Plusieurs systèmes de conversion d'énergie peuvent en revanche mener à l'apparition de sources volumiques : on peut citer en particulier les phénomènes de thermo-acoustique, de thermo-induction, de thermomécanique ou de thermochimie. Par exemple, une excitation par ondes ultrasonores peut entraîner des sources thermiques volumiques si le matériau est viscoélastique ou s'il y a présence de défaut. La reconstruction de ces sources est donc la première étape permettant de remonter aux paramètres responsables de l'échauffement. Caractériser une source thermique consiste à reconstruire sa géométrie et la puissance qu'elle génère. Cependant, l'identification de sources thermiques volumiques par la mesure des champs de température de surface est un problème mathématiquement mal posé. Le caractère diffusif de la température en est le principal responsable. Dans ce travail, la reconstruction 3D des sources volumiques à partir du champ de température résultant à la surface, mesuré par InfraRouge, est étudié. Tout d'abord, une analyse du problème physique permet de spécifier les limites de la reconstruction. En particulier, un critère sur la résolution spatiale atteignable est défini et une limitation de reconstruction pour les sources en profondeur est mise en lumière. Ensuite, une méthode de reconstruction par approche probabiliste est proposée et comparée aux méthodes d'inversions existantes. Le temps d'exécution et la sensibilité au bruit de mesure sont étudiés pour chacune de ces méthodes. Des applications numériques et expérimentales seront enfin présentées pour illustrer les résultats
Non Destructive Testing (N.D.T.) of materials and structures is a very important industrial issue in the fields of transport, aeronautics and space and in the medical domain. Active infrared thermography is a N.D.T. method that consists in providing an external excitation to cause an elevation of temperature field in the material and then to evaluate the resulting temperature field at the surface. However, thermal exciters used (flash lamps, halogen, lasers) act only on the surface of the sample. Several energy conversion systems can on the other hand lead to the generation of volumetric sources: the phenomena of thermo-acoustic, thermo-induction, thermomechanic or thermochemistry can be cited. For example, ultrasonic waves can generate volumetric heat sources if the material is viscoelastic or if there is a defect. The reconstruction of these sources is the first step for the quantification of parameters responsible of the heating. Characterizing a heat source means reconstructing its geometry and the power it generates. For example, a defect in a structure and / or the viscoelasticity of a material can be detected and quantified by this technique if it acts directly on temperature field. However, identification of volumetric heat sources from surface temperature fields is a mathematical ill-posed problem. The diffusive nature of the temperature is the main cause. In this work, the 3D reconstruction of the volumetric heat sources from the resulting surface temperature field, measured by InfraRed, is studied. First, an analysis of the physical problem enables to specify the limits of the reconstruction. In particular, a criterion on achievable spatial resolution is defined and a reconstruction limitation for in-depth sources is highlighted. Then, a probabilistic approach for the reconstruction is proposed and compared to existing inverse methods. The computation time and noise sensitivity are studied for each of these methods. Numerical and experimental applications will thus be presented to illustrate the results
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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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Leijon, Sundqvist Katarina. „Evaluation of hand skin temperature -Infrared thermography in combination with cold stress tests“. Doctoral thesis, Luleå tekniska universitet, Medicinsk vetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-63216.

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Abstract Since ancient times, warm or cold skin on the human body has been used as a parameter in evaluating health. Changes in body temperature are attributed to diseases or disorders. The assessment of body temperature is often performed to measure fever by detecting an elevated core temperature. With techniques such as infrared thermography, it is possible to perform a non-contact temperature measurement on a large surface area. The overall aim of this thesis was to contribute to a better understanding of the hand skin temperature variability in healthy persons and in persons experiencing whitening fingers (WF). The enclosed four papers discuss issues such as thermal variability response to cold stress test (CST) in repeated investigations; the specific rewarming pattern after CST; the difference between the hand’s palmar and dorsal temperatures; and evaluating skin temperatures and response to CST in participants with WF and healthy participants. All four papers used an experimental approach involving healthy males (I-III) and females (III) as well as individuals with (IV) and without WF (I-IV). Data were generated using dynamic infrared imaging before and after a CST. The radiometric images were analyzed using image analysis and statistics. The study showed that: (I) there is variability in hand skin temperature; (II) there are cold and warm hand skin temperature response patterns; (III) the skin temperatures on the palmar and dorsal sides of the hand are closely related; and (IV) a baseline hand skin temperature measurement can distinguish between whitening fingers and controls. The conclusion of this thesis is that it is necessary to engage in thorough planning before an investigation in order to choose the most adequate method for evaluating peripheral skin temperature response depending on the question asked.
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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.
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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Jama, Bandile, Jasson Gryzagoridis und 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.
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 thermography, namely internal leaks inspections using passive infrared thermography, pulse thermography and induction thermography both active IRT NDT techniques for the detection of subsurface and surface defects. The promising results that were obtained by performing an experiment in the laboratory using a model fluid handling pipe network, with three isolation valves connected in parallel, encouraged performing inspections in an operating power plant, where it was suspected that there were leaks from safety and drain isolation valves. In both situations, the results were obtained in a short period of time and indicated that passive infrared thermography can detect internal leaks in pipe networks. Pulsed thermography is an active non-contacting non-destructive testing technique used to detect subsurface defects in monolithic materials and delamination's in composites. In the particular experiment that was performed pulse thermography was benchmarked with the conventional technique of ultrasound testing. PVC, stainless steel and mild steel specimens manufactured with flat bottom holes (as models of subsurface defects) were subjected to pulse thermography. The time duration to detect the presence of a defect represented by a temperature contrast or a hot spot on the specimen's surface was approximately a couple of seconds following the thermal excitation. No further characterization of the defect was possible with the technique. In contrast when using the ultrasound testing technique to test the specimens, it took considerable time to detect the defects, however, data in terms of size and depth beneath the surface became available thus enabling their full characterization.
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Lee, Jeffrey Allen. „Nondestructive evaluation of reinforced concrete via infrared thermography: a feasibility study“. Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41987.

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An experimental investigation was conducted to develop a laboratory technique for the nondestructive evaluation of reinforced concrete. The methodologies were developed with the intent of eventual field implementation to determine the feasibility of utilizing infrared thermography to inspect substructural elements of concrete bridges.

Several specimen configurations were fabricated for thermographic inspection. A number of tests were performed on a variety of concrete specimens to determine the implementation parameters of the technique. The necessity of utilizing artificial heating methods for thermal input prior to inspection was evaluated.

The present study suggests that infrared thermography cannot be applied to substructural elements of bridges in a noncontact fashion. Internal thermal gradients produced by diurnal temperature fluctuation generally are not sufficient to produce the variations in surface temperature patterns necessary for thermographically detecting nonvisual subsurface defects. Rather, both the envelopment and artificial heating of the substructural element is required prior to thermographic inspection.


Master of Science
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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 defect contrast and mitigating heater variation.
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Bücher zum Thema "Testis Thermography"

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Medicine), Conference on Temperature and Environmental Factors and the Testis (1989 New York University School of. Temperature and environmental effects on the testis. New York: Plenum Press, 1991.

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2

Dolgov, I., Mihail Volovik und Sergey Kolesov. DORSOPATHIES Thermography Atlas. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/textbook_61b1abe32ca453.81844928.

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This issue is devoted to the medical thermography theory and practice in patients with dorsopathies. Thermography signs of clinical manifestation, such as scoliosis, muscular-tonic syndrome, intervertebral disc and disco-radicular conflicts, lumbo-sacral joints involvment and referred pain are described, based on specific exercise tests and temperature gradients. This book may be useful for all physicians who treat patients with “back pain
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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. Herausgegeben von Kaplan Herbert, American Society for Testing and Materials. und Society of Photo-optical Instrumentation Engineers. Bellingham, Wash: SPIE--the International Society for Optical Engineering, 1986.

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Storozhenko, V. A. Nerazrushai͡u︡shchiĭ kontrolʹ kachestva promyshlennoĭ produkt͡s︡ii aktivnym teplovym metodom. Kiev: "Tekhnika", 1988.

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Maldague, Xavier. Nondestructive evaluation of materials by infrared thermography. London: Springer-Verlag, 1993.

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International, Conference on Thermal Sensing and Imaging Diagnostic Applications (2001 Orlando Florida). Thermosense XXIII: 16-19 April, 2001, Orlando, USA. Bellingham, Washington: SPIE, 2001.

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International Conference on Thermal Sensing and Imaging Diagnostic Applications (1996 Orlando, Fla.). Thermosense XVIII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications : 10-12 April 1996, Orlando, Florida. Herausgegeben von Burleigh Douglas D, Spicer Jane W. M und Society of Photo-optical Instrumentation Engineers. Bellingham, Wash., USA: SPIE, 1996.

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Walker, James L. Study methods to standardize thermography NDE: Final report : contract number, NAS8-38609. [Washington, DC: National Aeronautics and Space Administration, 1998.

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International, Conference on Thermal Sensing and Imaging Diagnostic Applications (1995 Orlando Fla ). Thermosense XVII: An international conference on thermal sensing and imaging diagnostic applications : 19-21 April 1995, Orlando, Florida. Bellingham, Wash., USA: SPIE, 1995.

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International Conference on Thermal Sensing and Imaging Diagnostic Applications (1997 Orlando, Florida). Thermosense XIX: An international conference on thermal sensing and imaging diagnostic applications : 22-25 April, 1997, Orlando, Florida. Herausgegeben von Wurzbach Richard N, Burleigh Douglas D und Society of Photo-optical Instrumentation Engineers. Bellingham, Washington: SPIE, 1997.

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Buchteile zum Thema "Testis Thermography"

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Barreira, Eva, und Ricardo M. S. F. Almeida. „IRT Versus Moisture: Laboratory Tests“. In Infrared Thermography for Building Moisture Inspection, 29–42. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75386-7_3.

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Barreira, Eva, und Ricardo M. S. F. Almeida. „IRT Versus Moisture: In Situ Tests in Indoor Environment“. In Infrared Thermography for Building Moisture Inspection, 43–51. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75386-7_4.

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Barreira, Eva, und Ricardo M. S. F. Almeida. „IRT Versus Drying: In Situ Tests in Outdoor Environment“. In Infrared Thermography for Building Moisture Inspection, 53–62. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75386-7_5.

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Vavilov, Vladimir, und Douglas Burleigh. „Physical Models of TNDT“. In Infrared Thermography and Thermal Nondestructive Testing, 1–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_1.

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Vavilov, Vladimir, und Douglas Burleigh. „Statistical Data Treatment and Decision Making in TNDT“. In Infrared Thermography and Thermal Nondestructive Testing, 397–414. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_10.

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Vavilov, Vladimir, und Douglas Burleigh. „Applications of Thermal/Infrared NDT“. In Infrared Thermography and Thermal Nondestructive Testing, 415–569. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_11.

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Vavilov, Vladimir, und Douglas Burleigh. „Certification and Documents for TNDT“. In Infrared Thermography and Thermal Nondestructive Testing, 571–77. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_12.

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Vavilov, Vladimir, und Douglas Burleigh. „Heat Transfer in Solid Bodies“. In Infrared Thermography and Thermal Nondestructive Testing, 21–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_2.

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Vavilov, Vladimir, und Douglas Burleigh. „Determining Thermal Properties of Materials“. In Infrared Thermography and Thermal Nondestructive Testing, 47–91. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_3.

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Vavilov, Vladimir, und Douglas Burleigh. „Heat Conduction in Structures Containing Defects and the Optimization of TNDT Procedures“. In Infrared Thermography and Thermal Nondestructive Testing, 93–180. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48002-8_4.

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Konferenzberichte zum Thema "Testis Thermography"

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Omar, Mohammed, Mohammed Hassan, Kozo Saito und Ritchard Alloo. „IR Thermograph Inspection on Adhesion Integrity“. In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61501.

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The infrared thermography offers a flexible, non-contact and non-destructive tool for investigating the adhesion integrity in different applications. The IR thermography technique has been demonstrated to have wide applications to testing and quality assurance in automobile manufacturing processes. This paper addresses the capability of IR thermography in evaluating the adhesion integrity for two cases which occurred during automobile assembly processes. They are the coated surfaces adhesion integrity inspection and the adhesion strength in welded composite polymer plastic joints. Analytical models for the above two cases will be discussed in comparison to the corresponding thermographs. IR thermography technique can be used with one of or combination of the following mechanisms: the transmitted, the pulsed reflected signals. This paper discusses what type of processing scheme can be best applied to each of these signals.
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Berghoff, Ruben, Fernando Sarti, Azucena Urrutia, Marcela Renee und Eliseo G. Lluesma. „Thermography in undescended testes“. In Aerospace/Defense Sensing, Simulation, and Controls, herausgegeben von Andres E. Rozlosnik und Ralph B. Dinwiddie. SPIE, 2001. http://dx.doi.org/10.1117/12.421059.

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Breitenstein, O., J. P. Rakotoniaina, F. Altmann, J. Schulz und G. Linse. „Fault Localization and Functional Testing of ICs by Lock-in Thermography“. In ISTFA 2002. ASM International, 2002. http://dx.doi.org/10.31399/asm.cp.istfa2002p0029.

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Abstract In this paper new thermographic techniques with significant improved temperature and/or spatial resolution are presented and compared with existing techniques. In infrared (IR) lock-in thermography heat sources in an electronic device are periodically activated electrically, and the surface is imaged by a free-running IR camera. By computer processing and averaging the images over a certain acquisition time, a surface temperature modulation below 100 µK can be resolved. Moreover, the effective spatial resolution is considerably improved compared to stead-state thermal imaging techniques, since the lateral heat diffusion is suppressed in this a.c. technique. However, a serious limitation is that the spatial resolution is limited to about 5 microns due to the IR wavelength range of 3 -5 µm used by the IR camera. Nevertheless, we demonstrate that lock-in thermography reliably allows the detection of defects in ICs if their power exceeds some 10 µW. The imaging can be performed also through the silicon substrate from the backside of the chip. Also the well-known fluorescent microthermal imaging (FMI) technique can be be used in lock-in mode, leading to a temperature resolution in the mK range, but a spatial resolution below 1 micron.
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Heinrich, H., und K. H. Dahlem. „Quantitative infrared thermography in fire tests“. In 1998 Quantitative InfraRed Thermography. QIRT Council, 1998. http://dx.doi.org/10.21611/qirt.1998.035.

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Boccardi, S., G. M. Carlomagno, C. Bonavolontà, M. Valentino und C. Meola. „Infrared thermography to monitor composites under bending tests“. In 2014 Quantitative InfraRed Thermography. QIRT Council, 2014. http://dx.doi.org/10.21611/qirt.2014.215.

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Kaczmarek, M. „ADT in the diagnosis of atopic dermatitis - preliminary tests“. In 2020 Quantitative InfraRed Thermography. QIRT Council, 2020. http://dx.doi.org/10.21611/qirt.2020.106.

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Lebedev, O. V., D. Kirzhanov, V. Avramenko und O. N. Budadin. „Practical thermal testing of buildings“. In 2004 Quantitative InfraRed Thermography. QIRT Council, 2004. http://dx.doi.org/10.21611/qirt.2004.069.

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Necsulescu, D., S. Bayat und M. Eghtesad. „IR non destructive testing experiment design“. In 2010 Quantitative InfraRed Thermography. QIRT Council, 2010. http://dx.doi.org/10.21611/qirt.2010.100.

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Heinrich, Hermann, und Karl-Heinz Dahlem. „Thermography of glazings in fire tests“. In AeroSense '99, herausgegeben von Dennis H. LeMieux und John R. Snell, Jr. SPIE, 1999. http://dx.doi.org/10.1117/12.342319.

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Lisichkin, D., A. Shultshenko, G. Pjatnitskaja und A. Segen. „Thermovision quality testing of home electric heaters“. In 2000 Quantitative InfraRed Thermography. QIRT Council, 2000. http://dx.doi.org/10.21611/qirt.2000.025.

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Berichte der Organisationen zum Thema "Testis Thermography"

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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), Mai 1990. http://dx.doi.org/10.2172/6781610.

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Lewis, Seth Robert. PBX-9501 High Explosive Infrared Thermography Test Report. Office of Scientific and Technical Information (OSTI), Juni 2019. http://dx.doi.org/10.2172/1526921.

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Cates, M. R., K. W. Tobin und 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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