摘要
在高压输电塔的锚杆顶端施加一瞬态激振力,由布设在锚杆顶端的声发射传感器接收反射的信号。对接收的声发射信号进行了时频分析和小波分析。通过对比可以看出,声发射信号的特征频率、能量与腐蚀的状况有很好的相关性。因此,声发射技术是一种可靠有效的检测高压输电塔锚杆腐蚀的方法。
Apply the moment state force on the top of anchor of high-voltage transmission tower,acoustic emission(AE) sensor setting on anchor will recieve reflecting signal. Then the signal are analyzed by time-frequency analysis and wavelet analysis. It is found that there are clear correlation between the energy,characteristic frequency of AE signals and the corrosion of anchor. therefore AE technology can be used for the detection in transmission tower anchor corrosion.
出处
《传感器与微系统》
CSCD
2017年第11期158-160,共3页
Transducer and Microsystem Technologies
基金
国家质检总局科技计划基金资助项目(2013QK104)
云南省质量技术监督局科技计划基金资助项目(2013ynzjkj102)
关键词
锚杆
声发射
时频分析
小波分析
anchor
acoustic emission(AE)
time-frequency analysis
wavelet analysis