Results 41 to 50 of about 21,717 (254)

Sub-Surface Defect Depth Approximation in Cold Infrared Thermography

Sensors, 2022
Detection and characterisation of hidden corrosion are considered challenging yet crucial activities in many sensitive industrial plants where preventing the loss of containment or structural reliability are paramount.
Siavash Doshvarpassand, Xiangyu Wang
doaj   +1 more source

Turbulent heat transfer in spacer-filled channels: Experimental and computational study and selection of turbulence models [PDF]

, 2019
Heat transfer in spacer-filled channels of the kind used in Membrane Distillation was studied in the Reynolds number range 100–2000, encompassing both steady laminar and early-turbulent flow conditions.
Ciofalo M., Di Liberto M., La Cerva M., Tamburini A.   +3 more
core   +1 more source

Improvement the temperature signal filtering in lock-in thermography

MATEC Web of Conferences, 2018
At present, lock-in thermography is widely used non-destructive method for defects detection. The informative images in lock-in thermography (e.g. phasegram) are obtained after temperature signal filtering of the raw data.
Stoynova Anna, Bonev Borislav
doaj   +1 more source

Qualitative Comparison of Lock-in Thermography (LIT) and Pulse Phase Thermography (PPT) in Mid-Wave and Long-Wave Infrared for the Inspection of Paintings

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, Seppe Sels, Bart Ribbens, Simon Verspeek, Koen Janssens, Geert Van der Snickt, Gunther Steenackers   +6 more
doaj   +1 more source

Thermal profiles within the channel of planar gunn diodes using micro-particle sensors [PDF]

, 2017
The paper describes the use of a novel microparticle sensor (~3 μm diameter) and infra-red (IR) microscopy to measure the temperature profile within the active channel (typically 3 μm length and 120 μm width) of planar Gunn diodes. The method has enabled
Bajo, Miguel Montes, Cumming, David, Dunn, Geoffrey M., Glover, James, Khalid, Ata, Kuball, Martin, Oxley, Chris H.   +6 more
core   +2 more sources

Thermography Inspection for Detection and Tracking of Composite Cylinder Damage During Load Testing [PDF]

, 2010
Two thermography techniques, passive and active, are used to detect damage initiation and progression in a cyclically loaded composite cylinder. The passive thermography tracks damage progression in real time during cyclic loading.
Johnston, P. H., Seebo, J. P., Winfree, W. P., Zalameda, J. N.   +3 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Brief Review of Vibrothermography and Optical Thermography for Defect Quantification in CFRP Material

Sensors
Quantifying defects in carbon-fiber-reinforced polymer (CFRP) composites is crucial for ensuring quality control and structural integrity. Among non-destructive evaluation techniques, thermography has emerged as a promising solution for defect detection ...
Zulham Hidayat, Nicolas P. Avdelidis, Henrique Fernandes   +2 more
doaj   +1 more source

Autonomous systems thermographic NDT of composite structures [PDF]

, 2019
Transient thermography is a method used successfully in the evaluation of composite materials and aerospace structures. It has the capacity to deliver both qualitative and quantitative results about hidden defects or features in a composite structure ...
Avdelidis, N. P., Deane, S., Ibarra-Castanedo, C., Maldague, X. P. V., Tsourdos, A., Tzitzilonis, V., Williamson, A., Yazdani Nezhad, H., Zhang, H.   +8 more
core   +2 more sources

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source