Thermographic Inspection NDT method is a nonintrusive, noncontact mapping of an object's surface temperatures as heat flows to, from and/or through an object.

In pulsed thermography, a heat source such as a brief pulse of light is used to heat the surface of a sample, while an infrared camera records changes in the surface temperature. As the sample cools, the surface temperature is affected by internal flaws such as disbonds, voids or inclusions, which obstruct the flow of heat into the sample.

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