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| 用R/S分析进行超声信号处理方法研究 | |
| 引用本文： | 郭俊峰,王金枝,陈小佳,龚万明,张文斌. 用R/S分析进行超声信号处理方法研究[J]. 交通科技, 2008, 0(5) |
| 作者姓名： | 郭俊峰 王金枝 陈小佳 龚万明 张文斌 |
| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063 2. 武汉理工大学华夏学院,武汉,430223 3. 湖北十堰郧县公路管理局,十堰,442500 4. 十堰市交通基本建设质量监督站,十堰,442000 |
| 摘 要： | 以分形理论为基础,对得到的超声数字信号的时域波形进行非线性分析,即采用重标度极差分析(R/S分析)计算信号的Hurst指数,得到信号在承受各级荷载下的Hurst指数变化情况.结果表明,Hurst指数变化与混凝土的损伤情况存在一定的关系,可为混凝土的早期损伤识别提供借鉴. |
| 关 键 词： | 超声信号处理 R/S分析 无损检测 |
Research on Ultrasonic Signal Processing Methods Through R/S Analysis |
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| Guo Junfeng,Wang Jinzhi,Chen Xiaojia,Gong Wanming,Zhang Wenbin. Research on Ultrasonic Signal Processing Methods Through R/S Analysis[J]. Transportation Science & Technology, 2008, 0(5) | |
| Authors: | Guo Junfeng Wang Jinzhi Chen Xiaojia Gong Wanming Zhang Wenbin |
| Affiliation: | Guo Junfeng1,Wang Jinzhi2,Chen Xiaojia1,Gong Wanming3,Zhang Wenbin4(1.School of Transportation,Wuhan university of Technology,Wuhan 430063,China,2.Wuhan University of Technology Huaxia college,Wuhan 430023,3.Yun County Highway Authority,Shiyan 442500,4.Shiyan Communication Supervisory of Quality Bureau,Shiyan 442000,China) |
| Abstract: | The ultrasonic digital signals' time-domain waveform was analyzed by nonlinear method based on the fractal theory,and the Hurst dimension of signals was calculated through Scaling-Range analysis(R/S analysis),to get the Hurst dimension changes of ultrasonic signal received at each level load.The data showed that a certain relationship is existed between Hurst dimension change and the concrete damage,which can provide reference for the identification of concrete early injury. |
| Keywords: | ultrasonic signal processing scaling-range analysis(R/S analysis) nondestructive testing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |