Results 51 to 60 of about 5,430 (219)

Specificity in the Optical Excitation Lock-in Thermography Results Processing

open access: yesMATEC Web of Conferences, 2017
The aim of the paper is to study some factors influence on the contrast decreasing of the ampligram and phasegram obtained after optical lock-in thermography.
Stoynova Anna, Bonev Borislav
doaj   +1 more source

The Diagnosis of Shunt Defects in CIGS Modules Using Lock-In Thermography: An Empirical Comparative Study

open access: yesEnergies, 2023
Shunt defects are often detected in solar panels intended for photovoltaic applications. However, existing nondestructive detection technologies have certain inherent drawbacks depending on the application scenario.
Seung Hoon Lee   +3 more
doaj   +1 more source

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

open access: yesDeep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao   +5 more
wiley   +1 more source

PROCESSING OF RESULTS FROM A THERMAL FEM ANALYSIS USING THE LOCK-IN METHOD AND COMPARISON WITH EXPERIMENT [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2019
This article dealt with the comparison of results obtained from an experiment and from the numerical thermal FEM analysis. Sample with defects were printed on a 3D printer.
Ondrej ŠTALMACH   +3 more
doaj   +1 more source

Non-Destructive Fatigue Evaluation through Thermophysical Properties Using Lock-In Thermography

open access: yesEngineering Proceedings, 2023
In this study, we proposed a non-destructive testing and evaluation (NDT&E) method for assessing the micro-scale fatigue damage of carbon-fiber-reinforced plastic (CFRP) structures.
Ryohei Fujita   +6 more
doaj   +1 more source

THz QCL - Based active imaging applied to composite materials diagnostic [PDF]

open access: yes, 2010
This paper presents a CW raster-scanning THz imaging setup, used to perform Non-Destructive Testing of Kevlar and carbon fibre samples. The setup uses a 2.5 THz Quantum Cascade Laser as a source.
Barbieri, Stefano   +4 more
core   +1 more source

Flexible Chromatic VIS‐IR Meta‐Textile for Multi‐Scenario Stealth

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A flexible chromatic meta‐textile was developed for multi‐spectral stealth across VIS‐IR bands, combining low color difference, ultralow infrared emissivity, and passive radiative cooling. The textile exhibits excellent VIS wide‐angle compatibility, optical durability, and mechanical flexibility, offering a promising solution for advanced stealth ...
Jian Wang   +8 more
wiley   +1 more source

A novel experimental procedure for lock-in thermography on solar cells

open access: yesAIMS Energy, 2023
The occurrence of defects in solar cells is intrinsically related to a reduction in the efficiency and reliability of these devices. Therefore, monitoring techniques, such as lock-in thermography, electroluminescence and the I-V characteristic curve are ...
Thiago M. Vieira   +5 more
doaj   +1 more source

IMPLEMENTAZIONE DI TECNICHE DI TERMOGRAFIA ATTIVA IRNDT SU COMPOSITI GRP MEDIANTE LA DEPOSIZIONE DI IMPULSI TERMICI DI LUNGA DURATA [PDF]

open access: yes, 2011
Nel presente lavoro viene analizzata l\u2019implementazione di tecniche attive di termografia ad infrarossi per analisi NDT su pannelli in composito.
Licari, A., Pitarresi, G.
core  

FRP-to-masonry bond durability assessment with infrared thermography method [PDF]

open access: yes, 2014
The bond behavior between FRP composites and masonry substrate plays an important role in the performance of externally bonded reinforced masonry structures. Therefore, monitoring the bond quality during the application and subsequent service life of a
B Ghiassi   +26 more
core   +2 more sources

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