Long wave Thermography inspection refers to the visualization of thermograms, and encompasses all thermographic inspection techniques regardless of the technique used instance, a temperature sensitive coating applied to a surface to measure its temperature fields is a thermographic inspection contact technique based on heat conduction, and no infrared sensor is involved. Infrared thermography specifically refers to a nonintrusive, noncontact mapping of thermograms on the surface of objects using a detector that is sensitive to infrared radiation. Within range (8–12-μm)