铝内胆碳纤维全缠绕气瓶疲劳应变监测方法  

Fatigue Monitoring Method of Carbon Fiber Fully Wound Cylinder with Aluminum Liner Based on Strain Gauge

作　　者：徐燕生 刘祚时[1] 王汉奎[2] 俞跃[2] XU Yansheng;LIU Zuoshi;WANG Hankui;YU Yue(School of Mechanical&Electrical Engineering,Jiangxi University of Science&Technology,Ganzhou 341000,China;China Special Equipment Inspection and Research Institute,Beijing 100029,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]中国特种设备检测研究院,北京100029

出　　处：《河南科技大学学报（自然科学版）》2022年第3期19-23,30,M0003,共7页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家重点研发计划基金项目(2020YFF0305706)。

摘　　要：针对气瓶疲劳过程中出现的泄露爆炸等安全问题,以20 MPa作为最大压力,对铝内胆碳纤维全缠绕气瓶进行了应变疲劳监测试验,直至气瓶疲劳失效。为了排除气瓶疲劳过程中温度因素对试验结果的影响,同时也对温度信号进行了采集,采用回归分析进行温度效应分离,得到了铝内胆碳纤维全缠绕气瓶应变的真实变化情况。研究结果表明:采用应变片对铝内胆碳纤维全缠绕气瓶进行应变监测,分离温度效应后,能够提前约1000周期做出预警,为气瓶的安全使用提供一定保障。For the safety issues such as leakage and explosion during the fatigue process of gas cylinders,this paper proposed the strain fatigue monitor test with 20 MPa as the maximum pressure until the fatigue failure of gas cylinders.In order to exclude the influence of the temperature factor on the test results during the fatigue process of gas cylinders,the temperature signals were also collected and the temperature effects were separated by regression analysis to obtain the real changes of strains of fully wound gas cylinders with aluminum liner and carbon fiber.The results show that the use of strain gauges to monitor the strain of aluminum-lined carbon fiber fully wound gas cylinders and the separation of the temperature effect can make early warning about 1000 cycles in advance,which provides a certain guarantee for the safe use of gas cylinders.

关 键 词：气瓶 应变片 疲劳监测 温度效应 

分 类 号：O347[理学—固体力学]