20-08-2013, 03:18 PM
THERMAL IMAGINING IN INSPECTION
THERMAL IMAGINING .ppt (Size: 2.19 MB / Downloads: 35)
INTRODUCTION
Part of electro magnetic spectrum
It travels through space at the speed of light.
The thermal energy emitted from the surface of a material is called IR radiation.
Temperature of an object=IR radiation emitted from it.
Eg: x-ray, ultra violet, radio waves,Infra red rays.
Thermography?
It’s a -example of infrared imaging science.
-cost effective method.
-non contact method.
-non destructive testing.
IRT is the technique that used for producing a visible image of invisible IR energy emitted by objects.
Since wavelength is too long for the sensors in our eyes, IR cameras are used.
Applications include building diagnostics,plant maintenance, research, etc.
Where it is used?
It can be applied in any situation
where a problem or condition can
display itself by means of a “thermal
difference”.
For example, firefighters use it to see through smoke,
find persons, and localize hotspots of fires. Cooled IR
cameras can also be found at most major astronomy
research telescopes.
What makes it useful?
Its non contact method
-uses remote sensing, keeps the user out of danger.
It is two dimensional analysis
-thermal patterns can be analyzed, comparison
between areas of target is possible.
It is real time process
-fast scanning of stationary targets, capture of fast
moving targets & fast changing thermal patterns.