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Now showing items 11-17 of 17
Measuring the thermal resistance of vertical interfaces separating two different media using infrared thermography
(Elsevier, 2019)
We propose a method to measure the thermal contact resistance at the vertical interface between two materials using lock-in infrared thermography with laser spot heating. We found an analytical expression for the surface ...
Laser-spot step-heating thermography to measure the thermal diffusivity of solids
(Elsevier, 2021-06-15)
In this work we show that laser-spot step-heating thermography allows measuring the thermal diffusivity of solids accurately. It consists in illuminating the sample surface with a continuous-wave focused laser spot and ...
Fast sizing of the width of infinite vertical cracks using constant velocity Flying-Spot thermography
(Elsevier, 2019-03-19)
Constant Velocity Flying-Spot thermography consists in scanning the sample surface by a focused CW-laser spot moving at constant speed. This technique was designed to study large surfaces in short times. In this work, we ...
Sizing the length of surface breaking cracks using vibrothermography
(Elsevier, 2020-03-16)
Ultrasound excited thermography is used to determine the length of vertical surface breaking cracks. Two methods are proposed based on the analysis of the maximum temperature reached along the line containing the crack and ...
Determining the thermal diffusivity and the principal directions on anisotropic moving samples with laser-spot thermography
(Elsevier, 2021-05-24)
We propose a method to measure the thermal diffusivity of (an)isotropic samples moving at constant speed using laser-spot thermography with continuous illumination. The method does not require previous knowledge of the ...
Characterizing the shape and heat production of open vertical cracks in burst vibrothermography experiments
(Elsevier, 2019)
We present a quantitative characterization of the heat flux distribution generated at open vertical cracks in burstvibrothermography experiments. We use a stabilized inversion algorithm that is able to retrieve both ...
Thermographic Estimation of the Area and Depth of Buried Heat Sources for Nondestructive Characterization of Horizontal Defects
(Springer Nature, 2023-10)
We present a methodology to estimate quantitatively the area and depth of horizontal defects that generate heat in non-destructive tests such as burst vibrothermography or inductive thermography, without previous knowledge ...