Quantifying the width and angle of inclined cracks using laser-spot lock-in thermography
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2021-06-30Autor
González, Jorge
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NDT&E International 122 (2021) // Article ID 102494
Resumen
In this work we introduce a method to determine the width and the orientation of tilted cracks. This method
combines laser-spot lock-in thermography and calculations of the sample temperature by means of finite elements
modelling. The fitting of the surface temperature, calculated from the numerical model, to experimental
lock-in thermography data obtained by focusing the laser spot close to an artificial calibrated inclined crack
delivers its width and angle. The agreement between nominal and retrieved values proves the ability of the
method to size inclined cracks, even those of micrometric width.