本文着重论述了热扫描红外无损检测技术应用于检测非金属及复合材料或制品内距检测表面极浅处的内部缺陷时,出现的温度扰动下降的特殊现象及其原因,为应用该技术较全面地检测各种缺陷提供了一个值得十分重视的因素。 This article focuses on the thermal scanning infrared non-destructive testing technology used to detect non-metallic and composite materials or products within the shallow detection of surface defects in the internal defects occur when the temperature drop of the special phenomenon and the reasons for the application of the technology more comprehensive Detection of various defects provides a factor worthy of great attention.