Scanning induction thermography (SIT) on damaged carbon-fiber reinforced plastics (CFRP) components

Thomas, Renil; Libin, M. N.; Balasubramanian, K.

doi:10.21611/qirt.2014.055

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The cooling rates are different for each pixel depending upon its locations. The difference between the maximum temperature and the temperature attained after cooling of 0.1s and 0.5s is plotted [10]. Fig8,Fig9 and Fig10 shows the processed images after the 0.1,0.25 and 0.5s here the indication of the crack is easily identified, but still there is a small drop in thermal contrast of the crack when the metal surface is elevated temperature.…”

Section: Image Processingmentioning

confidence: 96%

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In-line laser thermography for crack detection at elevated temperature: A Numerical modeling study

Puthiyaveettil¹,

Krishna²,

Kidangan³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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The detection and characterization of cracks prior to damage is a technologically and economically highly significant task and is of very importance when it comes to safety-relevant structures. The evaluation of a components life is closely related to the presence of cracks in it. Laser thermography has already high capability for the detection of surface cracks and for the characterization of the geometry of artificial surface flaws in metallic samples. Crack detection in metallic samples at high temperature is highly significant in present manufacturing scenario. During the casting process of billets, surface cracks form, due to the suboptimal cooling rates. These cracks reduce value of the billet and must be removed using machining process after cooling. This secondary process increases cost of manufacturing. In this work we developed a heat transfer model for laser thermography to study the thermal contrast variation with increase in surface temperature using finite element method (FEM). Here we are mainly concentrating the capability of the scanning laser thermography in crack detection which are in elevated temperature and numerical modeling study of thermal contrast variation of crack with respect increase in metal surface temperature. This study is important to prove the capability of laser thermography for crack detection in elevated temperature. Since we are using High power CW Laser to local heating of the metal surface which can give relatively high thermal contrast even at elevated temperature compare to other heating source. Here we are modeled and simulated 2D laser scanning across a surface breaking crack and developed an algorithm to produce the vicinity of crack. The algorithm we developed applied for various surface temperature data. And validated the credibility of the algorithm with experimental data.

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Section: Image Processingmentioning

confidence: 96%

“…Which shows the capability of the laser thermography in surface breaking crack detection even at elevated temperature. 10.21611/qirt.2016.092 …”

Section: Line Probe Analysismentioning

confidence: 99%

In-line laser thermography for crack detection at elevated temperature: A Numerical modeling study

Puthiyaveettil¹,

Krishna²,

Kidangan³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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Detection of dis-bond between honeycomb and composite facesheet of an Inner Fixed Structure bond panel of a jet engine nacelle using infrared thermographic techniques

Kidangan

Krishnamurthy

Balasubramaniam

2020

Quantitative InfraRed Thermography Journal

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Scanning induction thermography (SIT) on damaged carbon-fiber reinforced plastics (CFRP) components

Cited by 2 publications

References 4 publications

In-line laser thermography for crack detection at elevated temperature: A Numerical modeling study

In-line laser thermography for crack detection at elevated temperature: A Numerical modeling study

Detection of dis-bond between honeycomb and composite facesheet of an Inner Fixed Structure bond panel of a jet engine nacelle using infrared thermographic techniques

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