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Journal articles on the topic 'Imaging systems Thermal analysis'

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1

Zhang, Bozhi, Meijing Gao, Paul L. Rosin, et al. "Research on Performance Evaluation and Optimization Theory for Thermal Microscope Imaging Systems." Applied Sciences 11, no. 13 (2021): 5897. http://dx.doi.org/10.3390/app11135897.

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Infrared imaging theory is an important theoretical basis for the design of infrared imaging systems, but there is no research on infrared imaging theory for designing thermal microscope imaging systems. Therefore, we studied the performance evaluation and optimization theory of thermal microscope imaging systems. In this paper, we analyzed the difference in spectral radiant flux between thermal microscope imaging and telephoto thermal imaging. The expression of signal-to-noise ratio of the output image of the thermal microscope imaging systems was derived, based on the analysis of the charact
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Miao, Bin Ying, Zheng Ning Tang, Sha Sha Wang, and Jia Xiang Chen. "Imaging Characteristics Analysis of GLV-Based Thermal CTP System." Applied Mechanics and Materials 713-715 (January 2015): 690–93. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.690.

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The Grating Light Valve (GLV) is a spatial light modulator based on Micro Electro Mechanical Systems (MEMS), and it has been successfully applied in the computer-to-plate (CTP) system by modulating laser beams. Fast modulation rate, a mass of pixels, and high power handling capability of the GLV device increase imaging speed. Digital working states, combine of two GLV pixels and exact beam shape improve imaging quality. Numerical calculation and graph analysis using MATLAB software show that imaging quality of GLV-based thermal CTP system is higher than that of traditional acousto-optic modula
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Nicola, Iulian, Cornel Todirica, Cornel Plesa, Cristian Predoi, and Alin-Constantin Sava. "Thermomechanical Analysis of ERTALON 4.6 Polyamide Used in High Thermal Shock Systems." Materiale Plastice 56, no. 4 (2019): 942–46. http://dx.doi.org/10.37358/mp.19.4.5288.

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The paper presents an analysis regarding the use of ERTALON 4.6 polyamide in high thermal shock systems. The behavior of ERTALON 4.6 polyamide mounted on high thermal shock systems was studied using high speed thermal imaging cameras. In the same time its mechanical proprieties were studied with the purpose to determine if it can withstand the stresses that occur during rifle firings.
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Eshchenko, D. V., A. T. Nikitin, and O. A. Belov. "PRACTICAL APPLICATION OF THERMAL-IMAGING ANALYSIS AND CONTROL METHODS." Bulletin оf Kamchatka State Technical University, no. 54 (2020): 6–19. http://dx.doi.org/10.17217/2079-0333-2020-54-6-19.

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The process of operation of any technical objects is inevitably associated with a change in their technical condition and a decrease in operational characteristics. At the same time, the requirements for quality assur-ance of the specified reliability parameters and safety of various technical systems throughout the entire pe-riod of operation are constantly increasing. One of the ways to solve the given problem is integration to the technological process of various types of equipment of new means and methods of technical diagnostics [GOST (State standard) 20911-89, GOST (State standard) 13372
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Sharma, Amit Kumar, Sanjay Kumar Sharma, Prashant Vasistha, and Jagdish Prasad Mangalhara. "Estimation of Effect of Emissivity on Target Detection through Thermal Imaging Systems." Defence Science Journal 67, no. 2 (2017): 177. http://dx.doi.org/10.14429/dsj.67.9821.

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<p>The effects of target emissivity on apparent thermal contrast as well as on detection range capabilities of thermal imagers in long wave infrared and middle wave infrared bands were evaluated. The apparent thermal contrast (to be seen by the thermal imager at standoff distance), considering only the emission from target and background, was first computed in both the IR bands in terms of target emissivity and secondly the apparent thermal contrast, considering the background radiation reflected off the target, was also computed. A graphical user interface simulation in MATLAB was prepa
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Sousa, Maria João, Alexandra Moutinho, and Miguel Almeida. "Thermal Infrared Sensing for Near Real-Time Data-Driven Fire Detection and Monitoring Systems." Sensors 20, no. 23 (2020): 6803. http://dx.doi.org/10.3390/s20236803.

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With the increasing interest in leveraging mobile robotics for fire detection and monitoring arises the need to design recognition technology systems for these extreme environments. This work focuses on evaluating the sensing capabilities and image processing pipeline of thermal imaging sensors for fire detection applications, paving the way for the development of autonomous systems for early warning and monitoring of fire events. The contributions of this work are threefold. First, we overview image processing algorithms used in thermal imaging regarding data compression and image enhancement
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Sledz, A., and C. Heipke. "THERMAL ANOMALY DETECTION BASED ON SALIENCY ANALYSIS FROM MULTIMODAL IMAGING SOURCES." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences V-1-2021 (June 17, 2021): 55–64. http://dx.doi.org/10.5194/isprs-annals-v-1-2021-55-2021.

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Abstract. Thermal anomaly detection has an important role in remote sensing. One of the most widely used instruments for this task is a Thermal InfraRed (TIR) camera. In this work, thermal anomaly detection is formulated as a salient region detection, which is motivated by the assumption that a hot region often attracts attention of the human eye in thermal infrared images. Using TIR and optical images together, our working hypothesis is defined in the following manner: a hot region that appears as a salient region only in the TIR image and not in the optical image is a thermal anomaly. This w
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Barela, Jaroslaw, Krzysztof Firmanty, and Mariusz Kastek. "Measurement and Analysis of the Parameters of Modern Long-Range Thermal Imaging Cameras." Sensors 21, no. 17 (2021): 5700. http://dx.doi.org/10.3390/s21175700.

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Today’s long-range infrared cameras (LRIRC) are used in many systems for the protection of critical infrastructure or national borders. The basic technical parameters of such systems are noise equivalent temperature difference (NETD); minimum resolvable temperature difference (MRTD); and the range of detection, recognition and identification of selected objects (DRI). This paper presents a methodology of the theoretical determination of these parameters on the basis of technical data of LRIRCs. The first part of the paper presents the methods used for the determination of the detection, recogn
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Karpov, D. F., M. V. Pavlov, A. A. Sinitsyn, N. N. Monarkin, and A. G. Gudkov. "FEATURES OF MOUNTED VENTILATED FACADE HEAT CONTROL SYSTEMS IN CONSTRUCTION PROJECTS." Herald of Dagestan State Technical University. Technical Sciences 47, no. 1 (2020): 147–55. http://dx.doi.org/10.21822/2073-6185-2020-47-1-147-155.

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Abstract. Aim. An integral part of an energy audit of buildings and structures consists in thermal imaging diagnostics. This permits an evaluation of the heat-shielding properties of the enclosing structures of buildings in order to control the functional and operational status of engineering systems, as well as to identify implicit (invisible) and explicit (visible) defects in them. The aim of the work is to analyse some features and results of thermal control of an opaque hinged ventilated facade system and translucent enclosing structures in the form of window systems of a capital construct
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Haidar, Ahmed M. A., Geoffrey O. Asiegbu, Kamarul Hawari, and Faisal A. F. Ibrahim. "Electrical Defect Detection in Thermal Image." Advanced Materials Research 433-440 (January 2012): 3366–70. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.3366.

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Electrical and Electronic objects, which have a temperature of operating condition above absolute zero, emit infrared radiation. This radiation can be measured on the infrared spectral band of the electromagnetic spectrum using thermal imaging. Faults on electrical systems are expensive in terms of plant downtime, damage, loss of production or risk from fire. If the threshold temperature is timely detected, the electrical equipment failures can be avoided. This paper presents a straightforward approach for thermal analysis that examines power loads and large area thermal characteristics. A the
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Harding, Ljiljana, John Wood, Mike Reading, and Duncan Q. M. Craig. "Two- and Three-Dimensional Imaging of Multicomponent Systems Using Scanning Thermal Microscopy and Localized Thermomechanical Analysis." Analytical Chemistry 79, no. 1 (2007): 129–39. http://dx.doi.org/10.1021/ac061190k.

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Spellenberg, B., J. Zettner, T. Hierl, M. Haller, and T. Lenzi. "Thermal Imaging Analysis of Stimulated Heat Diffusion in Sheet Metal for Non-Destructive Metrology and Testing." Advanced Materials Research 6-8 (May 2005): 681–88. http://dx.doi.org/10.4028/www.scientific.net/amr.6-8.681.

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Recent developments in infrared camera technology, testing methods and data processing algorithms have brought significant progress for high resolution spatial and temporal analysis of thermal radiation. Together with industry standard automation technology and specific infrared image data processing it became possible to non destructively inspect laser welded seams and other types of joints using heat flux analysis subsequent to thermal stimulation. High thermal diffusion coefficients of the usually metallic samples under test make the availability of high-speed infrared cameras as a key hard
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Spicer, J. W. M., M. G. Bevan, W. D. Kerns, and H. S. Feldmesser. "Thermal Characterization of Heat Sink Adhesive Systems for Spacecraft Electronics by Time-Resolved Infrared Radiometry." Journal of Electronic Packaging 115, no. 1 (1993): 101–5. http://dx.doi.org/10.1115/1.2909287.

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A new thermal characterization technique, time-resolved infrared radiometry (TRIR), is used to investigate three different heat sink adhesive systems used in spacecraft electronics - a filled epoxy, a filled silicone and a tape adhesive. Measurements of heat sink efficiency are presented as a function of thermal cycling and the TRIR results are compared with ultrasonic and X-ray imaging techniques and with destructive analysis. The TRIR technique is shown to provide a measure of the relative heat sink capabilities of the different systems and can detect subsurface delamination in the filled ep
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Yang, Ruizhen, Yunze He, Andreas Mandelis, Nichen Wang, Xuan Wu, and Shoudao Huang. "Induction Infrared Thermography and Thermal-Wave-Radar Analysis for Imaging Inspection and Diagnosis of Blade Composites." IEEE Transactions on Industrial Informatics 14, no. 12 (2018): 5637–47. http://dx.doi.org/10.1109/tii.2018.2834462.

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15

Khare, Sudhir, Manvendra Singh, and Brajesh Kumar Kaushik. "Range Performance Modelling of Thermal Imaging System based on Single Parameter Characterised by Ambient Temperature and Relative Humidity." Defence Science Journal 68, no. 5 (2018): 480–86. http://dx.doi.org/10.14429/dsj.68.12078.

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Range performance of a thermal imaging system is characterised by the prevailing atmospheric condition present at that time. There are two dominant parameters that limit the range performance of any thermal imaging systems i.e. ambient temperature and relative humidity. In the present work, comparative study of acquisition range performance of thermal imaging system operating in LWIR and MWIR spectral bands has been presented as a function of absolute humidity (AH) which is responsible for attenuation of IR radiation due to water vapour molecules present in path length. Presentation of acquisi
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Boubanga-Tombet, Stephane, Alexandrine Huot, Iwan Vitins, et al. "Thermal Infrared Hyperspectral Imaging for Mineralogy Mapping of a Mine Face." Remote Sensing 10, no. 10 (2018): 1518. http://dx.doi.org/10.3390/rs10101518.

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Remote sensing systems are largely used in geology for regional mapping of mineralogy and lithology mainly from airborne or spaceborne platforms. Earth observers such as Landsat, ASTER or SPOT are equipped with multispectral sensors, but suffer from relatively poor spectral resolution. By comparison, the existing airborne and spaceborne hyperspectral systems are capable of acquiring imagery from relatively narrow spectral bands, beneficial for detailed analysis of geological remote sensing data. However, for vertical exposures, those platforms are inadequate options since their poor spatial re
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Sagan, Vasit, Maitiniyazi Maimaitijiang, Paheding Sidike, et al. "UAV-Based High Resolution Thermal Imaging for Vegetation Monitoring, and Plant Phenotyping Using ICI 8640 P, FLIR Vue Pro R 640, and thermoMap Cameras." Remote Sensing 11, no. 3 (2019): 330. http://dx.doi.org/10.3390/rs11030330.

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The growing popularity of Unmanned Aerial Vehicles (UAVs) in recent years, along with decreased cost and greater accessibility of both UAVs and thermal imaging sensors, has led to the widespread use of this technology, especially for precision agriculture and plant phenotyping. There are several thermal camera systems in the market that are available at a low cost. However, their efficacy and accuracy in various applications has not been tested. In this study, three commercially available UAV thermal cameras, including ICI 8640 P-series (Infrared Cameras Inc., USA), FLIR Vue Pro R 640 (FLIR Sy
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18

Hong, Rui, Chenglang Xiang, Hui Liu, Adam Glowacz, and Wei Pan. "Visualizing the Knowledge Structure and Research Evolution of Infrared Detection Technology Studies." Information 10, no. 7 (2019): 227. http://dx.doi.org/10.3390/info10070227.

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This paper aims to explore the current status, research trends and hotspots related to the field of infrared detection technology through bibliometric analysis and visualization techniques based on the Science Citation Index Expanded (SCIE) and Social Sciences Citation Index (SSCI) articles published between 1990 and 2018 using the VOSviewer and Citespace software tools. Based on our analysis, we first present the spatiotemporal distribution of the literature related to infrared detection technology, including annual publications, origin country/region, main research organization, and source p
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Kowalski, Marcin. "A Study on Presentation Attack Detection in Thermal Infrared." Sensors 20, no. 14 (2020): 3988. http://dx.doi.org/10.3390/s20143988.

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Face recognition systems face real challenges from various presentation attacks. New, more sophisticated methods of presentation attacks are becoming more difficult to detect using traditional face recognition systems. Thermal infrared imaging offers specific physical properties that may boost presentation attack detection capabilities. The aim of this paper is to present outcomes of investigations on the detection of various face presentation attacks in thermal infrared in various conditions including thermal heating of masks and various states of subjects. A thorough analysis of presentation
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20

Apkarian, A. Vania, Aneela Darbar, Beth R. Krauss, Patricia A. Gelnar, and Nikolaus M. Szeverenyi. "Differentiating Cortical Areas Related to Pain Perception From Stimulus Identification: Temporal Analysis of fMRI Activity." Journal of Neurophysiology 81, no. 6 (1999): 2956–63. http://dx.doi.org/10.1152/jn.1999.81.6.2956.

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Differentiating cortical areas related to pain perception from stimulus identification: temporal analysis of fMRI activity. In a recent functional magnetic resonance imaging study (fMRI), we reported the cortical areas activated in a thermal painful task and compared the extent of overlap between this cortical network and those activated during a vibrotactile task and a motor task. In the present study we examine the temporal properties of the cortical activations for all three tasks and use linear systems identification techniques to functionally differentiate the cortical regions identified
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Lee, Heeyoung, Seonghoon Park, Sanggyu Park, and Wonseok Chung. "Enhanced Detection Systems of Filling Rates Using Carbon Nanotube Cement Grout." Nanomaterials 10, no. 1 (2019): 10. http://dx.doi.org/10.3390/nano10010010.

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The addition of small amounts of carbon nanotubes (CNTs) to cement-based materials modifies their thermal and electrical characteristics. This study investigated the void detection and filling rates of cement grout with multi-walled carbon nanotubes (MWCNTs). MWCNT grouts of 40 mm × 40 mm × 160 mm were fabricated. Specimens were tested by thermal imaging, electrical resistance analyses, and magnetic field tests. The experimental parameters were the concentration of MWCNT and the grout filling rate. The filling rate was investigated by measuring resistance and magnetic field changes with respec
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Nowacki, J., and N. Sieczkiewicz. "Prospective NDT methods for assessing the quality of polymer composites under production conditions." Archives of Materials Science and Engineering 2, no. 87 (2017): 66–74. http://dx.doi.org/10.5604/01.3001.0010.7447.

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Purpose: Analysis of non-destructive testing systems polymer composite in terms of current solutions in the area of methodology and devices. Analysis of contemporary standards for non-destructive testing of polymer composites established by ASTM. Analysis of Flir ONE camera capabilities in non-destructive testing composite carbon-epoxy composites. Design/methodology/approach: The thermal imaging tests of the carbon-epoxy composite discontinuity were carried out using a thermal imaging camera and Flir One accessory for an iOS phone. The tests were performed on carbon-epoxy composite samples mea
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Ulhaq, Anwaar, Peter Adams, Tarnya E. Cox, Asim Khan, Tom Low, and Manoranjan Paul. "Automated Detection of Animals in Low-Resolution Airborne Thermal Imagery." Remote Sensing 13, no. 16 (2021): 3276. http://dx.doi.org/10.3390/rs13163276.

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Detecting animals to estimate abundance can be difficult, particularly when the habitat is dense or the target animals are fossorial. The recent surge in the use of thermal imagers in ecology and their use in animal detections can increase the accuracy of population estimates and improve the subsequent implementation of management programs. However, the use of thermal imagers results in many hours of captured flight videos which require manual review for confirmation of species detection and identification. Therefore, the perceived cost and efficiency trade-off often restricts the use of these
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Bar, Georg K., and Gregory F. Meyers. "The Application of Atomic Force Microscopy to the Characterization of Industrial Polymer Materials." MRS Bulletin 29, no. 7 (2004): 464–70. http://dx.doi.org/10.1557/mrs2004.140.

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AbstractAtomic force microscopy (AFM) is now well established among the tools of choice for the analysis and characterization of materials.Applications of AFM span many industries including chemicals, plastics, pharmaceuticals, and semiconductors.Advancements in AFM instrumentation over the last five years have expanded the range of application of this technology to investigate thermal and mechanical properties of complex materials at high spatial resolution as well as structural and morphological characterization of materials subjected to thermal and mechanical stresses.In particular, this ha
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Kutin, V. M., M. V. Nikitchuk, V. M. Svitko, and O. O. Shpachuk. "AUTOMATION OF THE HEAT STATE ANALYSIS PROCESS HIGH-VOLTAGE CURRENT TRANSFORMERS." METHODS AND DEVICES OF QUALITY CONTROL, no. 2(43) (December 24, 2019): 96–110. http://dx.doi.org/10.31471/1993-9981-2019-2(43)-96-110.

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Thermographic control of electrical equipment allows you to draw preliminary conclusions about the technical condition of insulation, contact joints, windings, structural elements and cooling systems of electrical equipment of voltage classes 0.4 ÷ 750 kV. However, it should be borne in mind that the results of temperature measurement and assessment of the thermal state of electrical equipment are influenced by such factors as: environmental conditions, qualifications of personnel performing thermographic control and data interpretation, the need to improve regulatory documents for assessing t
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Golubkov, Anton Sergeevich, Anatoliy Igorevich Slatin, and Alexander Nikolaevich Smerdin. "Application of low-resolution thermal-imaging arrays in systems of performance monitoring of electric rolling stock current collectors." Transport of the Urals, no. 2 (2020): 80–85. http://dx.doi.org/10.20291/1815-9400-2020-2-80-85.

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The paper considers issues of diagnostics and performance monitoring of current collectors of electric rolling stock that is used in high load modes. It presents design peculiarities of current collectors that should be considered in operation. The paper also describes the advantages of application of lowresolution thermal-imaging arrays in systems of monitoring. The authors propose methods of minimization of the information array that allows reducing costs on collection and processing of information on hardware and software levels. As a result, the authors present a developed algorithm for in
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Hyun, Chang-Uk, Mijin Park, and Won Young Lee. "Remotely Piloted Aircraft System (RPAS)-Based Wildlife Detection: A Review and Case Studies in Maritime Antarctica." Animals 10, no. 12 (2020): 2387. http://dx.doi.org/10.3390/ani10122387.

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In wildlife biology, it is important to conduct efficient observations and quantitative monitoring of wild animals. Conventional wildlife monitoring mainly relies on direct field observations by the naked eyes or through binoculars, on-site image acquisition at fixed spots, and sampling or capturing under severe areal constraints. Recently, remotely piloted aircraft systems (RPAS), also called drones or unmanned aerial vehicles (UAV), were successfully applied to detect wildlife with imaging sensors, such as RGB and thermal-imaging sensors, with superior detection capabilities to those of huma
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Smarra, Devin A., and Vamsy P. Chodavarapu. "Experimental Study of Thermal Management Characteristics of Mass via Arrays." Electronics 10, no. 9 (2021): 1027. http://dx.doi.org/10.3390/electronics10091027.

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Mass via arrays (MVAs) are intersubstrate thermal management structures that utilize thermal meta-material design principles to target localized hot spots and extreme variation in the temperature profile of electronic systems. MVAs have shown promise for integration into electronic systems as passive thermal management techniques. Theoretical analysis has shown that, when properly designed, MVAs and MVA-like structures provide control over how the heat is transferred in an electronic substrate. While the theoretical confirmation of this behavior is promising, experimental results are important
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Guzaitis, Jonas, Agne Kadusauskiene, and Renaldas Raisutis. "Algorithm for Automated Foot Detection in Thermal and Optical Images for Temperature Asymmetry Analysis." Electronics 10, no. 5 (2021): 571. http://dx.doi.org/10.3390/electronics10050571.

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Infrared thermography has been proven to be an effective non-invasive method in diabetic foot ulcer prevention, yet current image processing algorithms are inaccurate and impractical for clinical work. The aim of this study was to investigate the accuracy of our automated algorithm for feet outline detection and localization of potential inflammation regions in thermal images. Optical and thermal images were captured by a Flir OnePro camera connected with an Apple iPad Air tablet. Both thermal and optical images were merged into an edge image and used for the estimation of foot template transf
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Kriven, W. M. "Strain analysis in composite ceramics." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 494–97. http://dx.doi.org/10.1017/s0424820100144012.

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Significant progress towards a fundamental understanding of transformation toughening in composite zirconia ceramics was made possible by the application of a TEM contrast analysis technique for imaging elastic strains. Spherical zirconia particles dispersed in a large-grained alumina matrix were examined by 1 MeV HVEM to simulate bulk conditions. A thermal contraction mismatch arose on cooling from the processing temperature of 1500°C to RT. Tetragonal ZrO2 contracted amisotropically with α(ct) = 16 X 10-6/°C and α(at) = 11 X 10-6/°C and faster than Al2O3 which contracted relatively isotropic
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Spaccapaniccia, C., P. Planquart, and J. M. Buchlin. "Measurements Methods for the analysis of Nuclear Reactors Thermal Hydraulic in Water Scaled Facilities." EPJ Web of Conferences 170 (2018): 04022. http://dx.doi.org/10.1051/epjconf/201817004022.

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The Belgian nuclear research institute (SCK•CEN) is developing MYRRHA. MYRRHA is a flexible fast spectrum research reactor, conceived as an accelerator driven system (ADS). The configuration of the primary loop is pool-type: the primary coolant and all the primary system components (core and heat exchangers) are contained within the reactor vessel, while the secondary fluid is circulating in the heat exchangers. The primary coolant is Lead Bismuth Eutectic (LBE). The recent nuclear accident of Fukushima in 2011 changed the requirements for the design of new reactors, which should include the p
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Sharma, Gourav K., Piyush Pant, Prashant K. Jain, Pavan K. Kankar, and Puneet Tandon. "Analysis of novel induction heating extruder for additive manufacturing using aluminum filament." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 12 (2021): 1961–70. http://dx.doi.org/10.1177/09544054211014451.

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Induction Heating (IH) method is gaining traction in the field of Additive Manufacturing (AM) as it is a low cost, clean, safe, and precise energy source. Wire as a feedstock material is highly efficient as compared to the powder form in terms of material utilization and economic viability. Thus, the combination of IH and wire feedstock delivery to additive manufacture a part has been explored on an in-house developed novel AM setup. The processing of aluminum wire (Al-5356) in semi-solid form from the extruder, heated using IH method has been performed. The approach adopted in this paper is t
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Sulistiowati, Ni Made Dian, Wayan Nata Septiadi, and Luh Putu Nopriani. "ANXIETY LEVEL ANALYSIS OF NURSING STUDENT WHO TOOK OBJECTIVE STRUCTURED CLINICAL EXAMINATION (OSCE) USING FACE TEMPERATURE DISTRIBUTION BASED ON THERMAL IMAGING." INDONESIAN NURSING JOURNAL OF EDUCATION AND CLINIC (INJEC) 2, no. 1 (2017): 44. http://dx.doi.org/10.24990/injec.v2i1.134.

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Background and Purpose: The condition that a person experiences stress can affect the function of various organ systems of the body, especially the cardiovascular system. Manifestations of prolonged stress can turn into anxiety. This study aims to determine differences in temperature distribution in the face of students who experience anxiety facing the OSCE.Method: This research method using pre-experimental design where samples are experiencing anxiety seen temperature distribution in the face area by using thermal imaging. The sample was selected using total sampling technique in which as m
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Bai, Xingwang, Haiou Zhang, and Guilan Wang. "Improving prediction accuracy of thermal analysis for weld-based additive manufacturing by calibrating input parameters using IR imaging." International Journal of Advanced Manufacturing Technology 69, no. 5-8 (2013): 1087–95. http://dx.doi.org/10.1007/s00170-013-5102-y.

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Zangooei, Hossein, Seyed Ali Mirbozorgi, and Seyedabdollah Mirbozorgi. "Thermal Analysis of Heat Transfer from Catheters and Implantable Devices to the Blood Flow." Micromachines 12, no. 3 (2021): 230. http://dx.doi.org/10.3390/mi12030230.

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Implantable devices, ultrasound imaging catheters, and ablation catheters (such as renal denervation catheters) are biomedical instruments that generate heat in the body. The generated heat can be harmful if the body temperature exceeds the limit of almost 315 K. This paper presents a heat-transfer model and analysis, to evaluate the temperature rise in human blood due to the power loss of medical catheters and implantable devices. The dynamic of the heat transfer is modeled for the blood vessel, at different blood flow velocities. The physics and governing equations of the heat transfer from
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Janovec, Jozef, Ivona Černičková, and Pavol Priputen. "Complex Metallic Alloys – Microstructure Characterization." Key Engineering Materials 592-593 (November 2013): 483–88. http://dx.doi.org/10.4028/www.scientific.net/kem.592-593.483.

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The recent findings related to binary and ternary structurally complex phases in selected complex metallic alloys coming under Al-Pd-Co, Al-Cu-Co, and Al-Mn-Fe systems are presented. The phases were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, high-angle annular dark-field imaging, X-ray diffraction, and differential thermal analysis. There are highlighted some unusual features of phases D, U, T, and ε-family from both structural and compositional points of view.
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Göktaş, Hasan, and Fikri Serdar Gökhan. "Analysis and Simulation of Forcing the Limits of Thermal Sensing for Microbolometers in CMOS–MEMS Technology." Micromachines 10, no. 11 (2019): 733. http://dx.doi.org/10.3390/mi10110733.

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Room-temperature highly sensitive microbolometers are becoming very attractive in infrared (IR) sensing with the increase in demand for the internet of things (IOT), night vision, and medical imaging. Different techniques, such as building extremely small-scale devices (nanotubes, etc.) or using 2D materials, showed promising results in terms of high sensitivity with the cost of challenges in fabrication and low-noise readout circuit. Here, we propose a new and simple technique on the application of joule heating on a clamped–clamped beam without adding any complexity. It provides much better
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Gil, Enrique, Carlos Lerma, Jose Vercher, and Ángeles Mas. "Methodology for Thermal Behaviour Assessment of Homogeneous Façades in Heritage Buildings." Journal of Sensors 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/3280691.

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It is fundamental to study the thermal behaviour in all architectural constructions throughout their useful life, in order to detect early deterioration ensuring durability, in addition to achieving and maintaining the interior comfort with the minimum energy consumption possible. This research has developed a methodology to assess the thermal behaviour of façades in heritage buildings. This paper presents methodology validation and verification (V & V) through a laboratory experiment. Guidelines and conclusions are extracted with the employment of three techniques in this experiment (ther
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Mormul, Roman, and Sergey Merzlyakov. "RESEARCH OF THE TEMPERATURE CONDITION OF THE GAS GENERATOR OF SOLID PROPELLANT AT THE STAND TEST BY THE METHOD OF THERMAL IMAGING." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 60 (2020): 26–33. http://dx.doi.org/10.15593/2224-9982/2020.60.03.

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In this article, the authors described in detail the methodology for conducting fire bench tests for the reusable experimental design of a solid propellant (SP) gas generator, specially designed to study the complex laws of heat and mass transfer under conditions of unsteady combustion of SP during operation of the installation and in the after-treatment mode. The developed technique allows us to study the nonlinear dynamics of temperature field changes, fuel and generator gas consumption, as well as its composition. The paper presents the chronology of the research, describes the used measuri
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Zhang, Rui, Heng Li, Kaifeng Duan, et al. "Automatic Detection of Earthquake-Damaged Buildings by Integrating UAV Oblique Photography and Infrared Thermal Imaging." Remote Sensing 12, no. 16 (2020): 2621. http://dx.doi.org/10.3390/rs12162621.

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Extracting damage information of buildings after an earthquake is crucial for emergency rescue and loss assessment. Low-altitude remote sensing by unmanned aerial vehicles (UAVs) for emergency rescue has unique advantages. In this study, we establish a remote sensing information-extraction method that combines ultramicro oblique UAV and infrared thermal imaging technology to automatically detect the structural damage of buildings and cracks in external walls. The method consists of four parts: (1) 3D live-action modeling and building structure analysis based on ultramicro oblique images; (2) e
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Guyon, Olivier. "Extreme Adaptive Optics." Annual Review of Astronomy and Astrophysics 56, no. 1 (2018): 315–55. http://dx.doi.org/10.1146/annurev-astro-081817-052000.

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Over the last two decades, several thousand exoplanets have been identified, and their study has become a high scientific priority. Direct imaging of nearby exoplanets and the circumstellar disks in which they form and evolve is challenging due to the high contrast ratio and small angular separation relative to the central star. Exoplanets are typically within 1 arcsec of, and between 4 and 10 orders of magnitude fainter than, the stars they orbit. To meet these challenges, ground-based telescopes must be equipped with extreme adaptive optics (ExAO) systems optimized to acquire high-contrast i
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Zaripova, A. D., D. K. Zaripov, and A. E. Usachev. "Automatic condition monitoring method to find defects in high-voltage insulators using infrared images." E3S Web of Conferences 124 (2019): 03003. http://dx.doi.org/10.1051/e3sconf/201912403003.

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In recent years, infrared imaging has become an important tool, particularly for predicting and preventing electrical equipment failure. Systems for online monitoring of the equipment conditions used in electrical substations are based on computer vision algorithms to perform visual analysis, automatically detect and assess equipment condition. This article describes a developed method that automatically finds defects in high-voltage insulators using infrared images. This method is based on the Otsu method, which is one of the most popular and effective segmentation methods that can be applied
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Johnston, Joel P., J. Michael Pereira, Charles R. Ruggeri, and Gary D. Roberts. "High-speed infrared thermal imaging during ballistic impact of triaxially braided composites." Journal of Composite Materials 52, no. 25 (2018): 3549–62. http://dx.doi.org/10.1177/0021998318765290.

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Ballistic impact experiments were performed on triaxially braided polymer matrix composites to study the heat generated in the material due to projectile velocity and penetration damage. Triaxially braided (0/+60/−60) composite panels were manufactured with T700S standard modulus carbon fiber and two epoxy resins. The PR520 (toughened) and 3502 (untoughened) resin systems were used to make different panels to study the effects of resin properties on temperature rise. The ballistic impact tests were conducted using a single stage gas gun, and different projectile velocities were applied to stud
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Sevilgen, Gokhan, Halil Bayram, and Muhsin Kilic. "1D analysis of cool down simulation of vehicle HVAC system." Thermal Science, no. 00 (2020): 99. http://dx.doi.org/10.2298/tsci191016099s.

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In this paper, a detailed combined 1D model of Heating, Ventilation and Air Conditioning systems of a vehicle were developed by using the LMS Imagine Lab Amesim software package. The numerical simulations were considered for soaking and cool down analysis under different environmental conditions. The thermal performance of different refrigerants as R-134a and R-1234yf were evaluated in terms of thermal performance and energy consumption. According to the soaking simulation results, the cabin air temperature values ranged from 49?C to 57?C in general. The maximum increase in cabin air temperatu
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Toledano, Manuel, Fátima S. Aguilera, Estrella Osorio, Inmaculada Cabello, and Raquel Osorio. "Microanalysis of Thermal-Induced Changes at the Resin–Dentin Interface." Microscopy and Microanalysis 20, no. 4 (2014): 1218–33. http://dx.doi.org/10.1017/s1431927614000944.

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AbstractThe purpose of this study was to evaluate the ability of two dentin adhesive systems to induce remineralization in the bonded dentin interface afterin vitrothermo-cycling. Dentin surfaces were treated with two different adhesive approaches: (1) 37% phosphoric acid (PA) plus an “etch-and-rinse” dentin adhesive (single bond, SB) (PA+SB) or (2) application of a “self-etch” dentin adhesive (Clearfil SE bond, SEB). Three groups were established: (i) 24 h or (ii) 3 m storage, and (iii) specimens submitted to thermal cycling (100,000 cy/5 and 55ºC). Atomic force microscopy imaging/nanoindenta
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Jabłoński, Bartłomiej, Dariusz Makowski, and Piotr Perek. "Implementation of Thermal Event Image Processing Algorithms on NVIDIA Tegra Jetson TX2 Embedded System-on-a-Chip." Energies 14, no. 15 (2021): 4416. http://dx.doi.org/10.3390/en14154416.

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Advances in Infrared (IR) cameras, as well as hardware computational capabilities, contributed towards qualifying vision systems as reliable plasma diagnostics for nuclear fusion experiments. Robust autonomous machine protection and plasma control during operation require real-time processing that might be facilitated by Graphics Processing Units (GPUs). One of the current aims of image plasma diagnostics involves thermal events detection and analysis with thermal imaging. The paper investigates the suitability of the NVIDIA Jetson TX2 Tegra-based embedded platform for real-time thermal events
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Postrioti, Lucio, Gabriele Brizi, and Gian Marco Finori. "Experimental Analysis of Water Pressure and Temperature Influence on Atomization and Evolution of a Port Water Injection Spray." Applied Sciences 11, no. 13 (2021): 5980. http://dx.doi.org/10.3390/app11135980.

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Port water injection (PWI) is considered one of the most promising technologies to actively control the increased knock tendency of modern gasoline direct injection (GDI) engines, which are rapidly evolving with the adoption of high compression ratios and increased brake mean effective pressure levels in the effort to improve their thermal efficiency. For PWI technology, appropriately matching the spray evolution and the intake system design along with obtaining a high spray atomization quality, are crucial tasks for promoting water evaporation so as to effectively cool down the air charge wit
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Wróbel-Jędrzejewska, Magdalena, and Elżbieta Polak. "The Operation Analysis of the Innovative MainBox Food Storage Device." Applied Sciences 11, no. 16 (2021): 7682. http://dx.doi.org/10.3390/app11167682.

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The development and construction of a prototype device (food parcel locker), consisting of small cooling and freezing chambers (boxes) ensuring temperature conditions (+5 C or −18 °C), enabling food storage were carried out. The innovative solutions have been introduced in the MainBox device: the appropriate construction of the device (materials, cooling installation), properly functioning systems (control of chillers, security, temperature monitoring), and propane as refrigerant (high energy efficiency, low global warming potential). The risk of explosion has been eliminated by closing of the
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Tomoaia, Gheorghe, and Roxana-Diana Pasca. "On the Collagen Mineralization. A Review." Medicine and Pharmacy Reports 88, no. 1 (2015): 15–22. http://dx.doi.org/10.15386/cjmed-359.

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Collagen mineralization (CM) is a challenging process that has received a lot of attention in the past years. Among the reasons for this interest, the key role is the importance of collagen and hydroxyapatite in natural bone, as major constituents. Different protocols of mineralization have been developed, specially using simulated body fluid (SBF) and many methods have been used to characterize the systems obtained, starting with methods of determining the mineral content (XRD, FTIR, Raman, High-Resolution Spectral Ultrasound Imaging), continuing with imaging methods (AFM, TEM, SEM, Fluoresce
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Delle Piane, Claudio, I. Tonguç Uysal, Mohinudeen Faiz, et al. "Thermal maturity and reservoir quality of the Velkerri Formation, Beetaloo Sub-basin, Northern Territory." APPEA Journal 60, no. 2 (2020): 697. http://dx.doi.org/10.1071/aj19189.

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The Proterozoic (~1.43 Ga) Velkerri Formation (McArthur Basin, Northern Territory) is believed to host one of the world’s oldest petroleum systems. Drilling and production tests demonstrated the encouraging potential of this unconventional gas resource and current efforts are aimed at better defining the extent of the gas and liquid-rich portions of this shale play. In this context, we conducted a comprehensive characterisation of specimens from the Amungee Member of the Velkerri Formation (previously referred to as the Middle Velkerri) sampled along a thermal maturity gradient from wells dril
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