Relevant bibliographies by topics / Dynamic IR thermography

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Dynamic IR thermography'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Dynamic IR thermography"

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Wei, Wei, Jian Wei Yu, Tao You, Xiao Fen Yu, and Yong Hong Wang. "Evaluation of the Transient Temperature Distribution of End-Face Sliding Friction Pair Using Infrared Thermometry." Key Engineering Materials 613 (May 2014): 213–18. http://dx.doi.org/10.4028/www.scientific.net/kem.613.213.

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A real-time temperature measurement system was designed for end-face sliding friction pairs with an infrared (IR) probe and IR thermography installed on it. The approximate temperature of contact surface was measured by the probe while non-contact surface’s temperature distribution was determined with the IR thermography. Two experiments with constant load but varied rotational speeds were carried out, and a preliminary study was made to analyze the variation of temperature in the friction process. Furthermore, the probe data was used as thermal load to calculate the temperature field by the FEM model and the result was verified using IR images. The experimental results showed that the infrared measurement system can detect and record the interface-temperature variation accurately. The probe data showed a good dynamic performance with the variation of friction coefficient. In addition, the calculated temperature field showed good accordance with the IR thermography data.
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Mutschler, Robin, and Emanuele Moioli. "Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use it?" Catalysts 11, no. 3 (February 26, 2021): 311. http://dx.doi.org/10.3390/catal11030311.

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Infrared (IR) thermography is a powerful tool to measure temperature with high space and time resolution. A particularly interesting application of this technology is in the field of catalysis, where the method can provide new insights into dynamic surface reactions. This paper presents guidelines for the development of a reactor cell that can aid in the efficient exploitation of infrared thermography for the investigation of catalytic and other surface reactions. Firstly, the necessary properties of the catalytic reactor are described. Secondly, we analyze the requirements towards the catalytic system to be directly observable by IR thermography. This includes the need for a catalyst that provides a sufficiently high heat production (or absorption) rate. To achieve true operando investigation conditions, some dedicated equipment must be developed. Here, we provide the guidelines to assemble a chemical reactor with an IR transmitting window through which the reaction can be studied with the infrared camera along with other best practice tips to achieve results. Furthermore, we present selected examples of catalytic reactions that can be monitored by IR thermography, showing the potential of the technology in revealing transient and steady state chemical phenomena.
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Stankovičová, Zuzana, Vladimír Dekýš, Milan Uhríčik, Pavol Novák, and Bohumír Strnadel. "Fatigue limit estimation using IR camera." MATEC Web of Conferences 157 (2018): 05021. http://dx.doi.org/10.1051/matecconf/201815705021.

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Determination of fatigue limit by traditional method is associated with testing of large number of specimens. This is caused by more scatter in test results and therefore a higher amount of tests are needed to generate a statistically reliable trend. The paper presents rapid and reliable estimation of fatigue limit using infrared thermography. By analysing the temperature of the material surface during cyclic loading it is possible to evaluate the dynamic behaviour of a structure and determine the fatigue limit. The method provides reliable results using a very little number of specimens in a very short time compared with traditional method.
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Kashyap, Uddip, Subhasish Sarkar, and Sandip K. Saha. "Study of hot stress dynamic IR thermography for detecting surface cancerous tissue." Journal of Medical Engineering & Technology 44, no. 6 (June 16, 2020): 284–98. http://dx.doi.org/10.1080/03091902.2020.1772390.

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Steenackers, Verstockt, Cloostermans, Thiessen, Ribbens, and Tjalma. "Infrared Thermography for DIEP Flap Breast Reconstruction Part I: Measurements †." Proceedings 27, no. 1 (December 3, 2019): 48. http://dx.doi.org/10.3390/proceedings2019027048.

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In order to identify the exact location of a useful perforator for DIEP flap breast reconstruction, CT images are made in the pre-operative phase. The aim of this research is to evaluate if dynamic infrared thermography is a helpful tool to check and visualize the blood flow in the flap during the pre- and peroperative phase. The results will be used in order to pinpoint the usefulness of IR thermography as an alternative method for perforator mapping and flapdesign. By means of infrared thermography the blood vessel distribution and its vascularisation of the abdominal wall will be visualized. The thermal images can help to detect the correct perforator and can help to decide which parts of the flap are best perfused and can be used for the DIEP flap reconstruction.
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Chevalier, Florian, Javier Leon, X. Perpiña, Dominique Tournier, Xavier Jordá, Josep Montserrat, and Phillippe Godignon. "IR Lock-In Thermography Analysis to Evidence Dynamic Mis-Behavior of SiC Device Prototypes." Materials Science Forum 821-823 (June 2015): 801–5. http://dx.doi.org/10.4028/www.scientific.net/msf.821-823.801.

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This paper deals with the geometry of a high voltage (1200 V) vertical JFET made with 4H silicon carbide, inspired by SIT or commercial solutions like Semisouth's one (principle exposed in Fig. 1). A first layout was designed allowing an easy integration of a free-wheeling diode. Indeed with the maturity of SiC JFET fabrication process, nowadays' trend is the high integration level of a complete power electronics system. This paper will focus on the distribution of the gate potential or the source current across the device and the relation that could be done with the switching delay. The measurements start with the classical I–V static characterization from room temperature till 225°C. After packaging the best dies, the switching behavior is studied. Gate bias and temperature dependence is also investigated. In order to fully understand the conducting/blocking or switching mechanisms, some further measurements using lock-in infrared thermography (LIRT) technique was led. Thus, with this complete characterization methodology the device layout can be improved.
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Chernov, G., J. L. Ibarra-Valdez, R. C. Carrillo-Torres, T. C. Medrano-Pesqueira, V. Chernov, and M. Barboza-Flores. "Improved Method of Study on the Photothermal Effect of Plasmonic Nanoparticles by Dynamic IR Thermography." Plasmonics 14, no. 4 (November 21, 2018): 935–44. http://dx.doi.org/10.1007/s11468-018-0877-1.

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Sadeghi, Maryam, Axel Boese, Ivan Maldonado, Michael Friebe, Joerg Sauerhering, Simon Schlosser, Heinrich Wehberg, and Konrad Wehberg. "Feasibility test of Dynamic Cooling for detection of small tumors in IR thermographic breast imaging." Current Directions in Biomedical Engineering 5, no. 1 (September 1, 2019): 397–99. http://dx.doi.org/10.1515/cdbme-2019-0100.

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AbstractThermographic imaging is a known technology to detect temperature differences. For medical applications, the patterns of heat distribution are used for diagnosis. It is already tested to visualize blood supply, inflammatory processes, and superficial or more extensive tumors, e.g. in the breast tissue. This method was promoted for breast screening purposes and as a substitute for mammography for mid aged women, but the results were not convincing for younger women, where tissue density is higher, tumor growth is often connected to local temperature increase and radiation-based mammography is not an option. Infrared (IR) thermography can support tumor screening. The screening should allow the early detection of small lesions even in the depth. Therefor we evaluated the feasibility of dynamic cooling in combination with IR imaging in a phantom study. A temperature-controllable gel phantom including a heating plate, a depth-adjustable heat source mimicking a tumor, and three sensors for temperature monitoring was built up. A raspberry pi device serves as a control unit to create a stable temperature balance comparable to a human breast. For the experiments, the tumor was placed in various depth. After cooling, the thermal recovery phase of the phantom was imaged using an IR camera and a webcam. A pixel-wise analysis of the IR data detects a higher gradient of temperature change in the tumor region. The experiments demonstrated the feasibility of tumor detection based on dynamic cooling and IR imaging.
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Forcellese, Archimede, Milena Martarelli, Giuseppe Pandarese, and Michela Simoncini. "Similar and Dissimilar FSWed Joints in Lightweight Alloys: Heating Distribution Assessment and IR Thermography Monitoring for On-Line Quality Control." Key Engineering Materials 554-557 (June 2013): 1055–64. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1055.

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The heating distribution assessment on similar and dissimilar friction stir welded joints in AA6082 and AA5754 aluminium alloy sheets was investigated. The FSW experiments were carried out using constant rotational and welding speeds of 1500 rpm and 60 mm/min, respectively. Temperature was locally measured by means of K-type thermocouples inserted into thin grooves located on the bottom side of the sheets, in fixed positions, very close to the welding line. It was observed that the mechanical properties of joints are related to the heat distribution. In order to obtain a completely non intrusive temperature monitoring, that was able to follow the process dynamic, a non-contact measurement system based on infrared thermography was also developed. Such system, used for the experimental evaluation of temperature on the upper surface of the joints, is also able to detect the presence of flow defects with a non-destructive method, demonstrating its effectiveness as a diagnostic instrument for the on-line quality control of welded joints.
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Sigal, V. I., and T. E. Shumakova. "Unsteady-state thermophysical models for detection of physiological and pathological conditions of the kidney by methods of active dynamic IR thermography." Journal of Engineering Physics and Thermophysics 71, no. 3 (May 1998): 519–24. http://dx.doi.org/10.1007/bf02682537.

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Dissertations / Theses on the topic "Dynamic IR thermography"

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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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(9760715), Nicholas Toan-Nang Vu. "High-Speed Flow Visualization and IR Imaging of Pool Boiling on Surfaces Having Differing Dynamic Wettabilities." Thesis, 2020.

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Boiling is used in a wide variety of industries, including electronics cooling, distillation, and power generation. Fundamental studies on the boiling process are needed for effective implementation. Key performance characteristics of boiling are the heat transfer coefficient, which determines the amount of heat flux that can be dissipated for a given superheat, and critical heat flux(CHF), the failure point that occurs when vapor blankets the surface. The wettability of a surface is one of the key parameters that affects boiling behavior. Wetting surfaces(e.g., hydrophilic surfaces), typically characterized by a static contact angle below 90°,have better critical heat flux due to effective rewetting, but compromised heat transfer coefficients due to increased waiting times between nucleation of each bubble. Meanwhile, nonwetting surfaces (e.g., hydrophobic surfaces), characterized by static contact angles greater than 90°, have better heat transfer coefficients due to improved nucleation characteristic, but reach critical heat flux early due to surface dry out. However, recent studies have shown that the static contact angle alone offers and incomplete, and sometimes inaccurate, description of this behavior, which is instead governed entirely by the dynamic wettability. Specifically, the receding contact angle impacts the size and contact area of bubbles forming on a surface during boiling, while the advancing contact angle determines how the bubble departs. With this more complete set of wettability descriptors, three characteristic wetting regimes define the boiling behavior: hygrophilic surfaces having advancing and receding contact angles both under 90°; hygrophobic surfaces having both these dynamic contact angles over 90°;and ambiphilic surfaces having a receding contact angle less than 90°, but an advancing contact angle greater than 90°.The goal of this thesis is to experimentally characterize and compare the behavior of boiling surfaces in each of these regimes, observe the contact line behavior, and explain the mechanisms for their differences in performance.
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Mani, Preeti. "Local heat transfer rate and bubble dynamics during jet impingement boiling." Thesis, 2012. http://hdl.handle.net/1957/35039.

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Characterization of local boiling trends, in addition to the typically reported area-averaged trends, is essential for the robust design and implementation of phase change technologies to sensitive heat transfer applications such as electronics cooling. Obtaining the values of heat fluxes corresponding to locally varying surface temperatures has been a challenge limiting most investigations to area-averaged results. This thesis illustrates the importance of a spatially local heat transfer analysis during boiling. Pool and submerged jet impingement boiling scenarios on a silicon surface are considered at the macroscale (27.5 mm heater with multiple nucleation sites) and microscale (1000 ��m heater for isolated bubble generation), by the use of two thin film serpentine heater geometries. The macroscale heater highlights the effect of spatial variations in imposed heat flux on boiling heat transfer with a circumferentially uniform but radially non-uniform heat flux distribution. The microscale heater simulates a local hot-spot for spot cooling on an electronic device. Spatial variation in boiling heat transfer and bubble dynamics with and without a jet flow are documented using thin film voltage sensors along with qualitative and quantitative high speed imaging and infra-red thermography. Unique to this study is the documentation of local boiling curves for different radial locations on the heat transfer surface and their comparison with the corresponding area-averaged representations. It is shown here that sectionally averaged representations of boiling curves over regions of like-imposed heat flux can substantially simplify the interpretation of data while retaining important information of the local variations in heat transfer. The radial influence of the convective jet flow on the bubble dynamics and boiling heat transfer is assessed for a single circular submerged jet configuration. Varied parameters include jet exit Reynolds numbers, nozzle geometry, test fluid (deionized water and FC-72), fluid subcooling and the supplied heat flux. Distinct modifications of the surface temperature distribution imposed by the impinging jet flow are highlighted by comparing radial temperature profiles during pool and jet impingement boiling. It is demonstrated that in contrast with pool boiling, thermal overshoots during jet impingement boiling for a highly wetting fluid like FC-72 are highest in regions farthest from the impingement point. The effect of jet inertia on bubble departure characteristics are compared with pool boiling under subcooled conditions for FC-72. Qualitative high speed visualization indicates the presence of two modes of bubble generation during jet impingement boiling (a) bubble departure from the surface and (b) bubble separation from the source resulting in sliding bubbles over the surface. The effect of jet flow on bubble entrainment is depicted. Quantitative results indicate that in general departure diameters for pool and jet impingement boiling increase and plateau at a maximum value with increasing power input while no notable trends were observed in the corresponding departure frequencies. The largest departure diameters for jet impingement boiling at fixed fluid subcoolings of 10��C and 20��C were found to be smaller than that for the corresponding pool boiling test by a factor of 1.6 and 2.3, respectively.
Graduation date: 2013
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Book chapters on the topic "Dynamic IR thermography"

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Astarita, Tommaso, and Giovanni Maria Carlomagno. "IR Scanner." In Infrared Thermography for Thermo-Fluid-Dynamics, 23–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29508-9_3.

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"An Overview on IR Thermography for Thermo-Fluid-Dynamics." In Infrared Thermography Recent Advances and Future Trends, edited by Giovanni M. Carlomagno, 134–64. BENTHAM SCIENCE PUBLISHERS, 2012. http://dx.doi.org/10.2174/978160805143411201010134.

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Conference papers on the topic "Dynamic IR thermography"

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Pregowski, P., G. Goleniewski, W. Komosa, W. Korytkowski, and S. Zwolenik. "Dynamic, Multispectral-band IR Thermography Applications in the Petrochemical Furnaces." In 2008 Quantitative InfraRed Thermography. QIRT Council, 2008. http://dx.doi.org/10.21611/qirt.2008.06_05_08.

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Pregowski, Piotr, Grzegorz Goleniewski, Wojciech Komosa, Waldemar Korytkowski, and Slawomir Zwolenik. "Applications of dynamic IR thermography in studying operation of heaters." In Defense and Security, edited by G. Raymond Peacock, Douglas D. Burleigh, and Jonathan J. Miles. SPIE, 2005. http://dx.doi.org/10.1117/12.605857.

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Strakowska, M., P. Chatzipanagiotou, P. Wiecek, G. De Mey, V. Chatziathanasiou, and B. Wiecek. "Novel software for medical and technical Thermal Object Identification TOI using dynamic temperature measurements by fast IR cameras." In 2018 Quantitative InfraRed Thermography. QIRT Council, 2018. http://dx.doi.org/10.21611/qirt.2018.053.

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Vavilov, Vladimir P., and Xavier P. Maldague. "Dynamic thermal tomography: new promise in the IR thermography of solids." In Aerospace Sensing, edited by Jan K. Eklund. SPIE, 1992. http://dx.doi.org/10.1117/12.58536.

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Villasmil, W., A. Meier, and A. Steinfeld. "Dynamic Modeling of a Solar Reactor for Zinc Oxide Thermal Dissociation and Experimental Validation Using IR Thermography." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18042.

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A dynamic numerical model of a solar cavity-type reactor for the thermal dissociation of ZnO is formulated based on a detailed radiative heat transfer analysis combining the Monte Carlo ray-tracing technique and the radiosity enclosure theory. The quartz window is treated as a semi-transparent spectrally-selective glass layer with directionally dependent optical properties. Model validation is accomplished by comparison with experimental results obtained with a 10-kW solar reactor prototype in terms of cavity temperatures, reaction extents, and quartz window temperature distribution measured by IR thermography. The solar-to-fuel energy conversion efficiencies obtained experimentally are reported and the various energy flows are quantified.
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Llamera, Paul Hubert P., and Camille Joyce G. Garcia-Awitan. "Thermal Failure Analysis of Functional Failures by IR Lock-in Thermal Emission." In ISTFA 2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.istfa2019p0164.

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Abstract Lock-in thermography (LIT), known as a powerful nondestructive fault localization technique, can also be used for microscopic failure analysis of integrated circuits (ICs). The dynamic characteristic of LIT in terms of measurement, imaging and sensitivity, is a distinct advantage compared to other thermal fault localization methods as well as other fault isolation techniques like emission microscopy. In this study, LIT is utilized for failure localization of units exhibiting functional failure. Results showed that LIT was able to point defects with emissions in the mid-wave infra-red (MWIR) range that Photo Emission Microscopy (PEM) with near infrared (NIR) to short- wave infra-red (SWIR) detection wavelength sensitivity cannot to detect.
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De Luca, L., G. Cardone, and G. M. Carlomagno. "Fluid dynamics applications of IR imaging system." In 1992 Quantitative InfraRed Thermography. QIRT Council, 1992. http://dx.doi.org/10.21611/qirt.1992.014.

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Mormile, P., L. Petti, M. Rippa, B. Immirzi, and M. Malinconico. "Monitoring of the degradation dynamics of agricultural films by IR thermography." In 2006 Quantitative InfraRed Thermography. QIRT Council, 2006. http://dx.doi.org/10.21611/qirt.2006.052.

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Elahi, Syed S., Eric A. Lange, and Stephen P. Lynch. "Experimental Measurements of Turbulent Junction Flow Using High Speed Stereo PIV and IR Thermography." In 47th AIAA Fluid Dynamics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-3303.

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Cheng, Tze-Yuan, and Cila Herman. "Optimization of Skin Cooling for Thermographic Imaging of Near-Surface Lesions." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65221.

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With the dramatic advances in IR imaging technology, the IR imaging technique has the potential to become a promising non-contact in-vivo diagnostic tool for the early detection of melanoma [1] as well as other conditions in which the temperature of the body deviates from normal temperature. Active or dynamic IR (thermal) imaging, which involves introducing external cooling, can induce or enhance relevant thermal contrast observed on the skin surface, leading to temperature differences that can be accurately measured with a properly designed IR imaging system. When the skin surface is cooled down in active IR imaging, the variation in the thermal properties of the lesion located underneath the surface result in identifiable temperature differences from the surrounding healthy tissue in the recovery phase, and therefore the dynamic thermal response of the structure acquired using active imaging provides critical information to distinguish the diseased and healthy tissues. Regarding the effectiveness of the active IR imaging, in this study, the performance of varied cooling parameters, including cooling method, cooling temperature, cooling duration, and cooling depth are discussed. Toward the objective of minimizing the discomfort of patient, by evaluating the transient temperature difference in the recovery phase for varied cooling conditions, our goal is to find out the optimized cooling conditions, which can provide effective thermal response contrast in the recovery phase, while applying appropriate cooling temperature and duration to facilitate the clinical feasibility of this technique. The optimized cooling condition concluded from the simulation will be verified by the in-vivo dynamic thermal imaging experiments.
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