Published on 24-Nov-2023

Infrared Thermography and its Applications: An Overview

Infrared Thermography and its Applications: An Overview

Sources - Reliable Plant

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Infrared Thermography, a revolutionary technique used in Non-destructive Testing, employs specialized cameras to detect the imperceptible and invisible infrared energy emitted by objects. This thermal energy, which is beyond the scope of human vision, serves as a tangible representation of heat in the electromagnetic spectrum. Unlike visible light, the infrared spectrum encompasses all objects emitting infrared energy, even those seemingly cold, like ice cubes. 

What is Infrared Thermography?

Infrared Thermography Applications

Infrared thermography uses thermal imagers, to unveil the invisible thermal radiation emanating from objects, converting it into temperature data and projecting it to a visual representation of the temperature distribution, commonly referred to as Thermograms. These thermal images act like a unique lens, exposing heat-producing objects that are imperceptible to the naked eye. 

Infrared thermography is a pivotal tool in various NDT Industries and is widely employed in predictive maintenance and condition monitoring. Its applications span diverse industries, including machine condition monitoring, building diagnostics for moisture, roof inspections, and energy-loss assessments, as well as medical imaging for conditions like peripheral vascular disease and metabolic abnormalities. Given that all objects emit thermal infrared energy above absolute zero, thermal imagers effortlessly capture and display infrared wavelengths irrespective of ambient light conditions. A parallel can be drawn with night-vision goggles, showcasing the versatility of infrared thermography in detecting objects in darkness. 

While infrared imagers are user-friendly, decoding the generated data requires a nuanced understanding of their operation, coupled with baseline knowledge of radiometry and heat transfer processes. Inspecting mechanical equipment through infrared thermography reveals a wealth of insights, but effective interpretation necessitates a holistic comprehension of the technology for NDT Services.

Types of Infrared Thermometers