【摘要】 材料表面和表面下浅层裂纹的检测对金属承力结构十分重要。热超声是一种新型的无损检测技术。该技术使用超声能量激励材料裂纹并用红外热像仪探测该裂纹。对飞机前起落架旋转臂试件进行的多次试验,证明此方法对金属裂纹的检测是有效的。更多还原

【Abstract】 It is very important for metal load-carrying structure in detecting the cracks on the surface or subsurface of material.The thermosonic method is a new nondestructive testing technology.The technology combines ultrasonic energy to excite a crack in a material with infrared thermography to detect the crack.The results of a series of experiments on airplane nose gear rotating arm show that the technology is an effective method.更多还原