文献类型：期刊文献

中文题名：基于超声导波的压力容器健康监测Ⅲ:纤维缠绕压力容器的在线监测

英文题名：Structural Health Monitoring of Pressure Vessel Based on Guided Wave Technology.PartⅢ:Online Monitoring of Filament Wound Pressure Vessel

作者：杨斌[1];胡超杰[1];轩福贞[1];肖飚[1];项延训[1];罗承强[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2020

卷号：56

期号：10

起止页码：19

中文期刊名：机械工程学报

外文期刊名：Journal of Mechanical Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：青年人才托举工程(2018QNRC001);国家自然科学基金(11702097,51835003);国家重点研发计划(2018YFC0808800);中央高校基本科研业务费(222201714015)资助项目。

语种：中文

中文关键词：纤维缠绕压力容器;超声导波;远程监测;水压疲劳;水压爆破

外文关键词：filament wound pressure vessel;guided waves;remote monitoring;hydraulic fatigue;bursting

摘要：基于超声导波的压力容器健康监测研究的第三部分,主要考察所研究的健康监测技术在纤维缠绕压力容器损伤定位中的应用。开展纤维缠绕压力容器的疲劳和打压爆破试验,设计远程在线监测系统以实时获取不同工况中纤维缠绕压力容器损伤定位结果。在打压和疲劳试验过程中,采集压力容器在不同状态中的导波信号,并分别测量金属内胆和复合材料层的应变变化,建立导波幅值与压力容器疲劳状态和受压状态之间的关联。开展纤维缠绕压力容器在打压爆破过程中的损伤定位,研究疲劳对损伤定位精度的影响规律。结果表明,在疲劳试验中,应变片能够连续记录并反映压力容器的应变状态,但疲劳周期随残余应变的变化趋势不明显,而导波幅值随疲劳周次的增加而线性下降;对经过5700周疲劳和未经过疲劳的纤维缠绕压力容器,导波幅值随着其内部压力的增加而线性下降,而应变值随着压力的增加线性增加,二者的对应关系可用于判定纤维缠绕压力容器的受压状态;利用所研发的在线监测系统可以远程获取纤维缠绕压力容器损伤位置信息,5700周的疲劳在很大程度上影响定位精度,而未经疲劳试验的压力容器的损伤定位误差较小。
The third part of the guided wave based structural health monitoring of pressure vessel applies the aforementioned structural health monitoring technology in the damage localization of a filament wound pressure vessel.The hydraulic fatigue cycling and pressurization experiments of a full-scale composite pressure vessel are performed,and the damage localization results are transferred by a remote monitoring system.The guided wave signal as well as the strain of the tank and the composite layer during the mechanical tests are obtained,and the relationship between the amplitude of the guided wave signal and the fatigue and pressurization status of the pressure vessel are built.During the pressurization,the damage localization is performed by the system under different pressures,and the damage localization accuracy is analyzed.Results show that the fatigue status of the pressure vessel can be reflected by the strain,however,the strain tendency cannot reflect its status after fatigue.The amplitude of the guided wave decreases linearly with the fatigue cycles.After fatigue for 5700 cycles,the amplitude decreasing with the inner pressure,while the strain shows an increasing tendency.Relationship between the two parameters could be used to measure the pressure vessel status.Fatigue affect the damage localization accuracy sharply,while the developed remote monitoring system could get the damage information of the filament wound pressure vessel before fatigue with high accuracy.