Infrared thermography (IRT), thermal imaging, and thermal video are examples of infrared imaging science.... View more
Infrared thermography (IRT), thermal imaging, and thermal video are examples of infrared imaging science. Thermographic cameras usually detect radiation in the long-infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 µm) and produce images of that radiation, called thermograms. Since infrared radiation is emitted by all objects with a temperature above absolute zero according to the black body radiation law, thermography makes it possible to see one’s environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature; therefore, thermography allows one to see variations in temperature. When viewed through a thermal imaging camera, warm objects stand out well against cooler backgrounds; humans and other warm-blooded animals become easily visible against the environment, day or night. As a result, thermography is particularly useful to the military and other users of surveillance cameras.
Are you sure you want to leave ?
Lock-in thermography: Like many of the other techniques, lock-in thermography requires that an external energy source (light, sound, heat, etc.) be applied to a component’s surface to reveal abnormalities below the surface. It’s important to know the depth, size and location of the abnormality, as well as the material makeup and properties for this technique to be accurate. While it takes longer than the techniques previously discussed, it can penetrate components with thicker walls.
Sorry, there were no replies found.