摘要
为了快速监测钢绞线的腐蚀程度,采用逐级逼近实际服役工况的模拟腐蚀试验,研究了腐蚀时间对钢绞线腐蚀层的形成、演化以及钢绞线力学性能的影响,同时基于金属的趋肤效应,将高频交变导纳信号应用于上述腐蚀研究中,发现并证实了导纳谱的极值频率变化规律与力学性能衰减正向相关,从而提出了利用高频导纳谱的频率偏移作为钢绞线腐蚀监测预警的手段,为实现其快速无损、在线监测奠定了基础。
In order to monitor the corrosion degree of steel strands,accelerated corrosion experiments approaching the actual working conditions were done step by step.The influence of corrosion time on the formation and evolution of corrosion layers and the subsequent mechanical property of steel was evaluated.Meanwhile,based on metal skin effect,high frequency alternating admittance signals were applied to above corrosion research,which found and verified the changing trend of peak frequency in admittance spectra was positively related to the attenuation of mechanical properties.Therefore,the approach of using frequency shift of high frequency admittance spectrum to monitor and early warn the severe corrosion state of steel strands was proposed,which paved the development for intact and on-line monitoring of steel.
作者
缪春辉
刘文方
程俊飞
陈国宏
季书林
MIAO Chun-hui;LIU Wen-fang;CHENG Jun-fei;CHEN Guo-hong;JI Shu-lin(Anhui Xinli Electric Technology Consulting Co.,Ltd.,Hefei 230022,China;Electric Power Research Institute,State Grid Anhui Electric Power Co.,Ltd.,Hefei 230601,China;Key Laboratory of Materials Physics,Chinese Academy of Sciences,Hefei 230031,China)
出处
《材料保护》
CAS
CSCD
北大核心
2019年第11期44-50,共7页
Materials Protection
基金
国家自然科学基金联合基金重点项目(U1532268)
国网安徽省电力公司技术项目(AH17-FW-FZB003-103
AH17-FW-FZB005-020
ZXZB-005)资助
关键词
钢绞线
金属趋肤效应
高频交变信号
导纳谱
极值频率
腐蚀检测
steel strands
metal skin effect
high frequency alternating signals
admittance spectrum
peak frequency
corrosion monitoring
