INFLUENCE AND TREATMENT OF LOW THERMAL CONDUCTIVITY SUBSTANCE IN INFRARED IMAGING TESTING
低导热系数物质在红外成像检测中的影响及其处理

The noise produced by a randomly distributed low thermal conductivity (LTC) layer on the outer surface of a metal tube when using infrared imaging technique to detect the corrosion defects on the inner surface of the tube was studied. The different influences of LTC layer on different heat loading methods were also studied both theoretically and experimentally. A new approach to diminish the high power noise produced by LTC layer was proposed in the end.