Crack sizing by laser excited thermography

Schlichting, J.; Maierhofer, Ch.; Kreutzbruck, Marc

doi:10.1016/j.ndteint.2011.09.014

Cited by 88 publications

(50 citation statements)

References 13 publications

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“…Other approaches were developed in order to take into account "optical" aspect of the defect [14], [15]. Nowadays finite elements methods are very wide-spread with diverse and varied approaches which concern essentially limited on punctual laser using [16], [17]. In our study, various approaches were explored:…”

Section: Descriptionmentioning

confidence: 99%

Modeling and optimization of open crack detection by active thermography

Thiam¹,

Kneip²,

Matteı³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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The aim of the presented work is the detection of open defects in metallic materials using laser-material interaction coupled with infrared thermal images. This process is a possible alternative for magnetic particles testing and penetrant testing in the field of non-destructive testing. In this context, a numerical simulation model is implemented with Comsol Multiphysics®. This model allows us to look for the process optimal parameters through numerical experimental designs.

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Section: Descriptionmentioning

confidence: 99%

Modeling and optimization of open crack detection by active thermography

Thiam¹,

Kneip²,

Matteı³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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“…The influences of crack opening and depth to the measurement results were discussed using the 2D finite element method (FEM). On the basis of this work, a combination of thermographic and ultrasonic techniques, using the laser for both thermal and acoustical excitation, was suggested [16,17].…”

Section: Introductionmentioning

confidence: 99%

Pulsed micro-laser line thermography on submillimeter porosity in carbon fiber reinforced polymer composites: experimental and numerical analyses for the capability of detection

et al. 2016

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In this article, pulsed micro-laser line thermography (pulsed micro-LLT) was used to detect the submillimeter porosities in a 3D preformed carbon fiber reinforced polymer composite specimen. X-ray microcomputed tomography was used to verify the thermographic results. Then, finite element analysis was performed on the corresponding models on the basis of the experimental results. The same infrared image processing techniques were used for the experimental and simulation results for comparative purposes. Finally, a comparison of experimental and simulation postprocessing results was conducted. In addition, an analysis of probability of detection was performed to evaluate the detection capability of pulsed micro-LLT on submillimeter porosity.

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“…It has unique properties, resulting from the ability of performing contactless measurements of the whole of the investigated surface in a very short time. The intensive investigations of the internal structure of porous building materials are carried out with the use of infrared thermography, including crack formation [1], salinity of material [2], moisture migration problems [3], [4], [5], [6], [7], [8] or murals damage evaluation [9]. The separate group of investigations concern thermal properties estimation of the materials.…”

Section: Introductionmentioning

confidence: 99%

Transient Infrared Measurement of Laser Absorption Properties of Porous Materials

Marynowicz¹

2016

Measurement Science Review

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The infrared thermography measurements of porous building materials have become more frequent in recent years. Many accompanying techniques for the thermal field generation have been developed, including one based on laser radiation. This work presents a simple optimization technique for estimation of the laser beam absorption for selected porous building materials, namely clinker brick and cement mortar. The transient temperature measurements were performed with the use of infrared camera during laser-induced heating-up of the samples' surfaces. As the results, the absorbed fractions of the incident laser beam together with its shape parameter are reported.

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Crack sizing by laser excited thermography

Cited by 88 publications

References 13 publications

Modeling and optimization of open crack detection by active thermography

Modeling and optimization of open crack detection by active thermography

Pulsed micro-laser line thermography on submillimeter porosity in carbon fiber reinforced polymer composites: experimental and numerical analyses for the capability of detection

Transient Infrared Measurement of Laser Absorption Properties of Porous Materials

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