光纤Bragg光栅应变传感器在霍普金森压杆上的冲击试验研究

杨吉祥;余尚江;陈显

振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 61-63,8.

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PDF(1321 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 61-63,8.
论文

光纤Bragg光栅应变传感器在霍普金森压杆上的冲击试验研究

  • 杨吉祥1,2; 余尚江2; 陈显2
作者信息 +

Experimental research on the shock test of fiber bragg grating strain sensors in SHPB

  • YANG Ji-xiang1,2; YU Shang-jiang2; CHEN Xian2

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摘要

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

Abstract

FBG strain sensors packaged by the carbon fibre reinforced polymer is developed which can be used to measure dynamical strain in the concrete under the impact of high-speed collision or the Explosion and Shock. In the split Hopkinson pressure bar the high-speed impact tests were conducted with the Fiber Bragg Grating and the FBG strain sensos, the results indicated that: the transient response rise time of the FBG sensors is less than 20μs, with good dynamical response characteristics, it can be used to measure the dynamical strain in the concrete structures under high dynamic strain test under the impact of high-speed collision.

关键词

光纤Bragg光栅(FBG) / 爆炸与冲击 / 霍普金森压杆 / 动态应变

Key words

fiber bragg grating (FBG) / explosion and shock / split Hopkinson pressure bar(SHPB) / dynamical strain

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导出引用
杨吉祥;余尚江;陈显. 光纤Bragg光栅应变传感器在霍普金森压杆上的冲击试验研究[J]. 振动与冲击, 2012, 31(1): 61-63,8
YANG Ji-xiang;YU Shang-jiang;CHEN Xian. Experimental research on the shock test of fiber bragg grating strain sensors in SHPB[J]. Journal of Vibration and Shock, 2012, 31(1): 61-63,8

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