Results 181 to 190 of about 995,675 (222)

Pulse modulated microwave and infrared thermography for superficial hyperthermia

Journal of Central South University, 2012
A 3D temperature field distribution of biological tissue for superficial hyperthermia using a pulse modulated microwave (PMMW) was presented. A 3D sliced homogeneous phantom was radiated by the PMMW and an infrared thermal imager was applied to image temperature distribution throughout the phantom.
Guo-jun Ma, Guo-tai Jiang, Zhi-hong Chen
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A new signal processing algorithm of pulsed infrared thermography

Infrared Physics & Technology, 2015
Abstract A new signal processing algorithm combining Markov and principal component analysis (PCA) algorithm, which was named as Markov–PCA algorithm, was proposed to process the pulsed infrared thermography. First, the image sequence was reconstructed using Markov algorithm, then the original complex data dimensionality was reduced using PCA ...
Qingju Tang, Chiwu Bu, Yuanlin Liu, Litao Qi, Zongyan Yu   +4 more
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Assessment of Ultrasonic Welds Using Pulsed Infrared Thermography

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2019
Ultrasonic metal welding is used in the automotive industry for a wide variety of joining applications, including batteries and automotive wire harnessing. During electric vehicle battery pack assembly, the battery cell tab and busbar are ultrasonically welded. Quality inspection of these welds is important to ensure durable packs.
Megan E. McGovern, Teresa J. Rinker, Ryan C. Sekol   +2 more
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Study on detecting CFRP composites using pulsed infrared thermography

SPIE Proceedings, 2011
Composite sandwich structure has been widely used in aerospace due to its lightweight, high stiffness and strength. The quality of the structure is crucial to durability and structural integrity of the rehabilitated the structure, Delaminations, debonding and water ingressing to honeycomb are typical defects in the structure.
Yan Huo, Hui-Juan Li, Yue-Jin Zhao, Cun-Lin Zhang   +3 more
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Nondestructive Testing of Paint Thickness Measurement by Pulsed Infrared Thermography

2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006
In this paper, basic principles of active IR thermography are introduced, paints covered sample is excited by exterior energy with ordinary flashing lamps array, the subsequent change of surface temperature of the sample is monitored by an infrared camera, and sequence of thermal wave signal and data acquisition are processed using the computer, then ...
Liu Bo, Zhang Cun-lin, Shen Jing-ling, Feng Li-chun, Tao Ning, null Li Yan-hong, Ding You-fu, Shi Si-chao, Xu Yi-guang, Huo Yan, Zhao Shi-bin, Xu Wei-chao, Zhang Xiao-yan   +12 more
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Pulsed infrared thermography to inspect the internal defects of composite insulators

2017 IEEE Electrical Insulation Conference (EIC), 2017
A non-destructive testing method for internal defects detection is desperately needed due to wide and increasing application of composite insulators in the power grid. In this study, a novel approach based on pulsed infrared thermography was investigated with the aim of testing and evaluating the state of composite insulators.
Lishuai Liu, Hongwei Mei, Liming Wang, Chenlong Zhao, Zhicheng Guan   +4 more
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Advances in Pulsed Phase Thermography [PDF]

Infrared Physics and Technology, 2002
A succinct depth analysis of Pulsed Phase Thermography (PPT) is presented in this paper. Some theory is presented as well including some comparisons with modulated (or lockin) thermography (MT)
Xavier Maldague
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Detection of non emergent defects in asphalt pavement samples by long pulse and pulse phase infrared thermography

European Journal of Environmental and Civil Engineering, 2011
Des analyses par thermographie pulsee conduites sur des donnees experimentales et simulees sont presentees. Ces methodes sont appliquees a des donnees issues d'une camera infrarouge non refroidie equipee d'un detecteur matriciel a microbolometres (de moindre sensibilite thermique que les cameras refroidies).
Dumoulin, Jean, Ibos, Laurent, Marchetti, Mario, Mazioud, Atef   +3 more
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Investigation of honeycomb structure using pulse infrared thermography method

SPIE Proceedings, 2010
To reduce weight and improve strength in the aerospace industry, composite structure has gained popularity as a replacement for conventional materials and structures, such as adhesive bonding and honeycomb structure. Honeycomb structures composed by a honeycomb core between two facesheets are very common on aerospace parts.
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Dynamic infrared multispectral imaging of paintworks by active pulsed thermography

2023
Active pulsed thermography method for characterization of complex painting structures and analysis of defects caused by ageing and environmental effects was under study. A painting (26 cm x 32 cm) of XIX century and a replica (46 cm x 55 cm) of Franz Hals (La Bohémienne 1628-1630) were analysed. Following rapid (20 ms duration) flash lamp excitation of
Semerok, Alexandre, Detalle, Vincent, Bai, Xueshi, Calligaro, Thomas, Boubanga Tombet, Stéphane   +4 more
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