基于光纤光栅传感器的复合材料气瓶应变检测  

Strain Testing of Composite Pressure Vessels Based on Fiber Bragg Grating Sensors

作　　者：阚宝玺 杨超[1] 王学锋[2,3] 唐才杰 崔留住[2,3] 王俊锋 KAN Baoxi;YANG Chao;WANG Xuefeng;TANG Caijie;CUI Liuzhu;WANG Junfeng(School of Aeronautic Science and Engineering,Beihang University,Beijing 100083;Beijing Institute of Aerospace Control Devices,Beijing 100094;Beijing Optical Fiber Sensing System Engineering Technology Research Center,Beijing 100094;Aerospace Research Institute of Materials&Processing Technology,Beijing 100076)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083 [2]北京航天控制仪器研究所,北京100094 [3]北京市光纤传感系统工程技术研究中心,北京100094 [4]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2023年第2期111-116,共6页Aerospace Materials & Technology

摘　　要：针对复合材料气瓶应变检测的需求,提出了一种光纤光栅传感器植入碳纤维缠绕铝合金内衬的复合材料气瓶的方法,首先在室温下将光纤光栅传感器粘接在经过喷砂处理的铝合金内衬外表面,然后对粘接了光纤光栅传感器的铝合金内衬进行高温老炼,最后进行碳纤维缠绕和固化。开展了8只光纤光栅应变传感器植入复合材料气瓶的试验,其中6只传感器在复合材料气瓶150℃/1.5 h固化后保持存活,实现了复合材料气瓶固化、水压疲劳、高温试验等过程中的应变检测。结果表明,所提出的方法可以减小内衬的粗糙外表面导致的光纤光栅信号衰减,验证了光纤光栅传感器植入复合材料气瓶进行应变检测的可行性。A method of implanting fiber Bragg grating(FBG)sensors into composite pressure vessels with carbon fiber reinforced aluminum alloy inner liners was proposed to accomplish strain measurement of the vessels.FBG sensors were firstly bonded on sandblasted liner outer surface at room temperature.The liner was then aged at high temperature.The carbon fiber was wound and cured at last.Experiments were conducted by implanting 8 FBG strain sensors into a composite pressure vessel.6 out of the 8 sensors survived after the vessel cured at 150℃/1.5 h.Strain measurement of the vessel during winding,curing,hydraulic fatigue and high temperature experiment were recorded.The results show that the proposed method can reduce the FBG sensors'intensity attenuation due to liner surface roughness,and the feasibility of implanteing FBG sensors into composite pressure vessels for strain testing is verified.

关 键 词：复合材料 气瓶 应变 光纤传感器 光纤光栅 

分 类 号：TB33[一般工业技术—材料科学与工程]