提出一种利用光纤光栅作为传感元构成传感阵列对冲击能进行检测的方法.通过搭建简易冲击系统装置，将光纤光栅应变传感器沿轴向对称粘贴于圆杆表面，对入射应力波能量进行检测.实验结果表明，两杆对心正冲击时入射应力波幅值最大，能量传递效率最高.通过分析频率域内的应力波信号可知，其能量主要集中在0~5 000 Hz频率范围内.将入射应力波能量与冲杆动能进行对比，结果表明冲杆与圆杆传递能比在93%以上，基本满足冲击机械性能测试的需求.

A method to detect the impact energy using the fiber Bragg grating as the sensing element was presented. A simple impact system was built to detect the incident stress wave energy while fiber Bragg grating were axially symmetrically pasted to the round rod. The experiment result shows that both the amplitude of incident stress wave and energy transfer efficiency reach the biggest with two rod positive impacts. The energy of incident stress wave is mainly concentrated in the range of 0~5 000 Hz based on the analysis of signal in frequency domain. The energy transfer ratio of impact bar to round rod is more than 93% while comparing the incident stress wave energy and the kinetic energy of the impact bar, which meets the basic requirements of the testing for the impact mechanical properties.