把传感器集成到结构中,实现在线实时评估或警告结构损伤情况,是未来航空航天工业发展的必然选择.近些年来,光纤传感系统受到了越来越多的关注,尤其是在先进复合材料结构健康监测方面.光纤传感器中应用最多的是光纤光栅( FBG)传感器,它不仅可以在线测量结构的应变,进而间接测量结构的健康状况,还可以直接检测和评估复合材料结构的损伤情况,如横向裂纹,脱层损伤等,从而实现对结构的健康监测.
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