河南水利与南水北调2025，Vol.54Issue(3)：47-49,3.
基于高频电阻抗信号线性映射的无损检测方法
Nondestructive Detection Method Based on Linear Mapping of High-frequency Electrical Impedance Signal
朱国栋 1林秀松1
作者信息
- 1. 绍兴市中正工程检测有限公司,浙江 绍兴 312000
- 折叠
摘要
Abstract
The non-destructive testing method based on linear mapping of high-frequency impedance signal is proposed because the dam structure is affected by the load spectrum,resulting in inaccurate detection results.By placing PZT sensors and utilizing the piezoelectric admittance effect to map the mechanical impedance changes of the dam structure,linear mapping and principal component analysis are used to reduce the dimensionality of the data.Key information is extracted and imaged using phased array imaging technology to determine damage according to the signal amplitude.Experimental results have shown that this method can accurately detect damage to dam structures,and the detection results are consistent with the preset location.关键词
高频电阻抗信号/PZT传感器/线性映射/大坝结构/相控阵成像技术/无损检测Key words
high-frequency electrical impedance signal/PZT sensor/linear mapping/dam structure/phased array imaging technology/non-destructive testing分类
建筑与水利引用本文复制引用
朱国栋,林秀松..基于高频电阻抗信号线性映射的无损检测方法[J].河南水利与南水北调,2025,54(3):47-49,3.
