Non-destructive evaluation of brazed joints between cooling tube and heat sink by IR thermography and its verification using FE analysis

Chaudhuri, Paritosh; Santra, P.; Yoele, Sandeep; Prakash, Arun; Reddy, D. Chenna; Lachhvani, Lavkesh; Govindarajan, J.; Saxena, Y. C.

doi:10.1016/j.ndteint.2005.08.002

Cited by 21 publications

(10 citation statements)

References 7 publications

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“…The study of active thermography has become an important Non-Destructive Evaluation technique (NDE) for damage detection and material updating in metallic structural components [24][25][26], as well as CFRP (Carbon Fiber Reinforced Polymer) and GFRP (Glass Fiber Reinforced Polymer) composites [27]. In state-of-the-art research, the technique is upcoming for the inspection of art works in the IR-C spectrum [16].…”

Section: Methodsmentioning

confidence: 99%

IR Reflectography and Active Thermography on Artworks: The Added Value of the 1.5–3 µm Band

et al. 2018

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Featured Application: The work described in this study can assist in the selection of an appropriate tool for art work inspection. In addition, the authors hope to provide an overview of potential application areas for the different measurement instruments discussed within the manuscript. Abstract: Infrared Radiation (IR) artwork inspection is typically performed through active thermography and reflectography with different setups and cameras. While Infrared Radiation Reflectography (IRR) is an established technique in the museum field, exploiting mainly the IR-A (0.7-1.4 µm) band to probe for hidden layers and modifications within the paint stratigraphy system, active thermography operating in the IR-C range (3-5 µm) is less frequently employed with the aim to visualize structural defects and features deeper inside the build-up. In this work, we assess to which extent the less investigated IR-B band (1.5-3 µm) can combine the information obtained from both setups. The application of IR-B systems is relatively rare as there are only a limited amount of commercial systems available due to the technical complexity of the lens coating. This is mainly added as a so-called broadband option on regular Mid-wave infrared radiation (MWIR) (IR-C'/3-5 µm) cameras to increase sensitivity for high temperature applications in industry. In particular, four objects were studied in both reflectographic and thermographic mode in the IR-B spectral range and their results benchmarked with IR-A and IR-C images. For multispectral application, a single benchmark is made with macroscopic reflection mode Fourier transform infrared (MA-rFTIR) results. IR-B proved valuable for visualisation of underdrawings, pencil marks, canvas fibres and wooden grain structures and potential pathways for additional applications such as pigment identification in multispectral mode or characterization of the support (panels, canvas) are indicated.

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Section: Methodsmentioning

confidence: 99%

IR Reflectography and Active Thermography on Artworks: The Added Value of the 1.5–3 µm Band

et al. 2018

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“…w ciekłym azocie), a następnie poddaje ką-pieli (np. w wodzie) o podwyższonej temperaturze [29]. Działania te mają na celu uzyskanie jak najwyższego gradientu temperaturowego, co bezpośrednio wpływa na bardzo dobry kontrast końcowego obrazu.…”

Section: Rozwój Metod Kontrolnychunclassified

Trendy rozwojowe technologii lutowania i metod kontrolnych

Piwowarczyk

Harapińska

Wojdat

2016

Przegląd Spawalnictwa

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StreszczenieW artykule przedstawiono tendencje rozwojowe lutowania miękkiego i twardego. Zaprezentowano perspektywiczne kierunki oraz obszary badawcze, które w ostatnich latach dynamicznie ewoluowały. Opisano charakterystyki materiałów, których lutowanie jest problematyczne. Udowodniono, że zastosowanie nowoczesnych technik oraz odpowiedni dobór materiałów dodatkowych, umożliwia ich jakościowe wytwarzanie. Przedstawiono rozwój systemów kontrolnych i stopnia zautomatyzowania stanowisk lutowniczych. Wskazano na dynamicznie rozwijające się metody lutowania, proponując przy tym alternatywne źró-dła ciepła.Słowa kluczowe: postęp w technologiach lutowania; nowoczesne metody lutowania; jakość złączy lutowanych; automatyzacja lutowania AbstractDevelopment trends of soldering and brazing technologies were presented in this paper. Perspective directions and research areas, which in recent years evolved rapidly, were introduced. Characteristics of materials, which soldering and brazing is problematic, were described and it was proven that use of modern techniques and appropriate selection of additive materials, enables their qualitative manufacture. Development of control systems and automation degree of soldering and brazing stations were presented. Rapidly developing methods of soldering and brazing were pointed out, giving an idea of alternative heat sources.

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“…On the other hand, computer simulation is an economical and fast way to determine and simulate material behaviour. Finite element (FE) analysis has been applied as a verification tool in some applications involving infrared thermography [6,7]. In this study, it is concluded that identical trend variations exist for both physical and analytical data with satisfactory agreement between both approaches.…”

mentioning

confidence: 92%

Finite element optimization by pulsed thermography with adaptive response surfaces

Peeters

Steenackers²,

Ribbens³

et al. 2014

Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography

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A finite element (FE) model is updated and optimized by making use of the surface temperature distribution captured with pulsed thermography (PT) on a PVC plate. The temperature distribution across the surface can be measured. As the amount of experimental data to be used in this case is very high, an accurate, time-efficient adaptive response surface optimization algorithm is developed. The FE model will become more accurate and the simulations more realistic. The major advantages of using PT are that one picture contains the complete structure temperature data and that it is a non-contact technique.

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Non-destructive evaluation of brazed joints between cooling tube and heat sink by IR thermography and its verification using FE analysis

Cited by 21 publications

References 7 publications

IR Reflectography and Active Thermography on Artworks: The Added Value of the 1.5–3 µm Band

IR Reflectography and Active Thermography on Artworks: The Added Value of the 1.5–3 µm Band

Trendy rozwojowe technologii lutowania i metod kontrolnych

Finite element optimization by pulsed thermography with adaptive response surfaces

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