Results 11 to 20 of about 5,430 (219)
Lock-in Thermography Using Diamond Quantum Sensors
Journal of the Physical Society of Japan, 2023 Precise measurement of temperature distribution and thermal behavior in microscopic regions is critical in many research fields. We demonstrate lock-in thermography using nitrogen-vacancy centers in diamond nanoparticles. We successfully visualize thermal diffusion in glass coverslip and Teflon with micrometer resolution and deduce their thermal ...
Ogawa, Kensuke +3 more
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Applied Sciences, 2023 When studying paintings with active infrared thermography (IRT), minimizing the temperature fluctuations and thermal shock during a measurement becomes important.
Michaël Hillen +6 more
doaj +1 more source
Metals, 2023 This report is on convolution neural network (CNN) fusion lock-in thermography, which can implement the intelligent identification of defects for aviation honeycomb sandwich composites (HSCs).
Xinjian Wang +5 more
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Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]
, 2018 Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P. +7 more
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Applied Sciences, 2022 Recently, thermographic testing has been applied as a non-destructive evaluation technology for composite materials due to its remarkable advantages, such as its non-contact, non-destructive, and high-speed properties, it is harmless to the human body ...
Yoonjae Chung +3 more
doaj +1 more source
Multi-scale gapped smoothing algorithm for robust baseline-free damage detection in optical infrared thermography [PDF]
, 2020 Flash thermography is a promising technique to perform rapid non-destructive testing of composite materials. However, it is well known that several difficulties are inherently paired with this approach, such as non-uniform heating, measurement noise and ...
Hedayatrasa, Saeid +4 more
core +2 more sources
Lock‐In Thermography to Analyze Plasmonic Nanoparticle Dispersions [PDF]
Particle & Particle Systems Characterization, 2019 AbstractThe physicochemical properties of nanoparticles (NPs) strongly rely on their colloidal stability, and any given dispersion can display remarkably different features, depending on whether it contains single particles or clusters. Thus, developing efficient experimental methods that are able to provide accurate and reproducible measures of the NP
Lukas Steinmetz +7 more
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Lock-in and pulsed thermography for solar cell testing [PDF]
Applied Optics, 2018 Inspection of solar cells is an important part of their production process because even small defects can cause a significant drop of a whole photovoltaic module performance. LED illuminated lock-in (LEDILIT) and flash-pulse thermographic techniques (FPT) were compared in this study. Lock-in methods are more commonly used for solar cell inspection. The
L. Muzika, M. Švantner, M. Kučera
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Eurasian Journal of Science and Engineering, 2021 Defects in masonry are difficult to detect with the naked eye. Non-destructive testing (NDT) techniques are one such ways to detect defects. One way to detect moisture is by using lock-in Infrared (IR) thermography technology.
Mohammed Fadhil Hama +1 more
doaj +1 more source
Ensemble Joint Sparse Low Rank Matrix Decomposition for Thermography Diagnosis System [PDF]
, 2021 Composite is widely used in the aircraft industry and it is essential for manufacturers to monitor its health and quality. The most commonly found defects of composite are debonds and delamination.
Ahmedtl, Junaid +3 more
core +1 more source