Results 211 to 220 of about 6,938 (253)
Comparative Study of Active Thermography Techniques for the Nondestructive Evaluation of Honeycomb Structures [PDF]
Research in Nondestructive Evaluation, 2009 In this article, the theoretical and experimental aspects of three active thermography approaches: pulsed thermography (PT), lock-in thermography (LT), and vibrothermography (VT), are discussed in relation to the nondestructive evaluation (NDE) of ...
Clemente Ibarra-Castanedo +2 more
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Study on methods to extract high contrast image in active dynamic thermography [PDF]
Quantitative InfraRed Thermography Journal, 2019 In the present study, image reconstruction methods are applied in active dynamic thermography (ADT) to visualize the superficial blood vessel with high contrast.
Ashish Saxena, E Y K Ng
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Active dynamic thermography in cardiosurgery
Quantitative InfraRed Thermography Journal, 2007The aim of this study is development and analysis of applicability of new tools for continuous inspection of open-heart cardio-surgical interventions, suitable in clinical environment. Our notice is concentrated on IR-thermal imaging for monitoring of invasive surgical interventions as CABG in treatment of ischaemia and other heart malfunctions.
Mariusz Kaczmarek +4 more
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Thermal contrast of active dynamic thermography versus static thermography
Biomedical Spectroscopy and Imaging, 2019The use of steady state thermal patterns in breast cancer screening have shown low specificities, it is believed that by thermally exciting the body with a cold stimulus the temperature contrast will increase as well as the specificity of the technique.
González, Francisco Javier +2 more
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Active thermography for potato characterization
SPIE Proceedings, 2008This paper describes the design of a semi-automated heating and scanning system and analytic method for potato characterization. Potatoes are heated using lamps in a heating chamber and then transferred on a movable fixture to an imaging chamber. A non-linear model was designed to predict which potatoes have excessive sugar defects and the model was
Sheng-Jen Hsieh, Chih-Chen Sun
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Domain derivative approach to active infrared thermography
Inverse Problems in Science and Engineering, 2010A thin conducting plate has an inaccessible side in contact with aggressive external agents. On the other side, we are able to heat the plate and take temperature maps in laboratory conditions. Detecting and evaluating damages on the inaccessible side from thermal data requires the solution of a nonlinear inverse problem for the heat equation in ...
Bison P, Ceseri M, Fasino D, Inglese G
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Application of Active Microwave Thermography to delamination detection
2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014Health monitoring of infrastructure is very important in the transportation and infrastructure industries. Many nondestructive testing (NDT) techniques have been applied for structural health monitoring including microwave NDT, ultrasound, thermography, etc. Due to the complex materials (composites, concrete, etc.) commonly used, it may be difficult to
Ali Foudazi +2 more
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Geometric Calibration in Active Thermography Applications [PDF]
, 2016 The application of active thermography such as Lock-in or pulse thermography has been widely used in aerospace and other industries. Over the last decade, the level of automation has increased by using various manipulators like classical NC machines or ...
Schmidt, Thomas, Frommel, Christoph
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Quantitative Determination of Porosity by Active Thermography
AIP Conference Proceedings, 2007We present a new approach based on Active Thermography by which it is possible to produce images of porosity in Carbon Fibre Reinforced Plastics that correspond striking well with results obtained by ultrasonic testing. We applied the method of Pulsed Thermography by using flashes of light for the generation of heat.
G. Hendorfer +4 more
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Active Thermography in Through-Life Engineering
2014With the increased use of high-value components in aerospace industries, there is huge emphasis on reliability as their failure in service could lead to catastrophic failure of the system. Thus, there continues to be increasing dependency of such high-value components to undergo critical maintenance routines in order to reduce the probability of ...
Sri Addepalli, Lawrence Tinsley
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