静载下Y/YY型管节点构件的AE特征信号分析  

Analysis of AE characteristic signal of Y/YY type tube joints components under static load

作　　者：王朋飞 石健[1] WANG Peng-fei;SHI Jian(School of Mechanical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500

出　　处：《塑性工程学报》2022年第12期209-216,共8页Journal of Plasticity Engineering

基　　金：四川省青年科技创新研究团队项目(2019JDTD0017)。

摘　　要：针对导管架式海洋平台中Y/YY型管节点在海洋环境中由于腐蚀缺陷造成承载力降低的问题,对含腐蚀缺陷和用碳纤维复合材料(CFRP)加固后含腐蚀缺陷的两种类型Y/YY型管节点进行了静载轴压试验,并使用声发射技术采集了压缩过程中的声发射特征参数。通过比较声发射的振铃计数、能量计数等参数,并结合构件的载荷-位移曲线对构件的承载能力进行了研究。结果表明,声发射振铃计数、累积能量计数与材料的应力-应变曲线的变化规律趋势相同,能够较好地反映材料在载荷作用下的变形规律。管节点构件在静载中的声发射振铃计数和能量计数的变化趋势能够体现构件在载荷作用下的变形和损伤程度。经CFRP加固的构件在静载下突发型信号降低,表明管节点构件的变形较小,相应的承载力提高。In view of the problem that the bearing capacity of Y/YY type tube joints in jacket offshore platforms is reduced due to corrosion defects in the marine environment,the static load axial compression tests of the two types of Y/YY type tube joints with corrosion defects and corrosion defects after carbon fiber reinforced plastics(CFRP)reinforcement were carried out,and the acoustic emission characteristic parameters in the compression process were collected by acoustic emission technology.The bearing capacity of the component was studied by comparing the ringing count,energy count of acoustic emission,which combined with the load-displacement curve of the components.The results show that the ringing count and cumulative energy count of acoustic emission have the same variation trend with the stress-strain curves of the material,which can better reflect the deformation law of the material under load.The variation trend of acoustic emission ringing count and energy count of tube joint components under static load can reflect the deformation and damage degree of components under load.The burst signals of CFRP-strengthened components decrease under static load,indicating that the deformation of tube joints components is small and the corresponding bearing capacity is improved.

关 键 词：声发射 腐蚀缺陷 管节点 轴压 承载力 

分 类 号：TE58[石油与天然气工程—油气田开发工程]