利用复合材料封装光纤Bragg光栅(FBG)设计制作了用于测量高速碰撞或爆炸与冲击作用下混凝土内部动态应变的FBG应变传感器.在霍普金森压杆上对FBG在封装前的裸光栅和封装后的FBG传感器分别进行了高速冲击试验,试验表明:设计的FBG传感器的瞬态响应上升时间小于20μs,具有良好的动态响应特性,可以用于工程中混凝土结构内高速冲击下的动态应变测试.%A FBG strain sensor packaged with carbon fibre reinforced polymer was developed, it could be used to measure dynamic strain in concrete under high-speed impact or explosion and shock. On a split Hopkinson pressure bar with a FBG strain sensor, high-speed impact tests were conducted. The results indicated that the transient response rise time of the FBG sensor is less than 20|as, the sensor has good dynamic response characteristics, it can be used to measure the dynamic strain in concrete structures under high-speed impact.
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