Infrared is an invisible portion of the light spectrum. All objects warmer than absolute zero will emit energy within the spectrum.
Infrared Thermography in simple terms is seeing heat. The warmer the object, the brighter we see in an infrared thermal imager. Thermography is a form of nondestructive testing that measures temperature variances of a component as heat (i.e. thermal radiation) flows through, from, or to that component. IR thermography is also generically known as IR testing, thermal testing, thermal imaging, and IR thermometry.
With thermography, a problem can be observed without dismantling machines step can be taken to stop catastrophic failures which cause losses due to unforeseen breakdowns.
Infrared (IR) technology is particularly useful in our line of work as engineering consultants. It widely used as an inspection tool for condition monitoring and predictive maintenance. It is advantageous over traditional visual inspection and other tools because infrared technology does not have to be in contact with the equipment being monitored. The detection of hidden details eg. subsurface pipes, ducts, wall ties and etc, helps us to determine the causes of defects where no visual signs exist.