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介绍脉冲加热红外热成象无损检测技术的理论模型和自制的实验系统.利用该系统对钢、铝和塑料试件中近表面缺陷进行了实验检测.理论和实验结果表明,该技术不仅可用于检测缺陷大小,而且可通过峰值时间t_(?)检测缺陷距表面的深度.
The theoretical model of pulsed heating infrared thermal imaging nondestructive testing technology and self - made experimental system are introduced.The experiment of near - surface defects in steel, aluminum and plastic samples is carried out by using this system.Theoretical and experimental results show that this technique can be used not only in Defect size is detected, and the depth of the defect from the surface can be detected by the peak time t_ (?).