| 钢轨踏面裂纹的表面波B扫描成像检测 |
| |
| 引用本文： | 张在东,任明珠.钢轨踏面裂纹的表面波B扫描成像检测[J].无损检测,2011(9):65-67,71. |
| |
| 作者姓名： | 张在东 任明珠 |
| |
| 作者单位： | 广州市特种承压设备检测研究院;广州市计量检测技术研究院; |
| |
| 摘 要： | 用超声表面波来检测钢轨踏面裂纹，设计和加工了具有不同深度的裂纹试样。采用频率为0．5MHz的表面波探头对裂纹试样进行B扫描成像检测。为克服钢轨中传播的多模式表面波导致检测图像分辨率低的缺点，采用对A扫描信号移位叠加的方法对图像进行了处理。此方法不仅能对表面裂纹进行较精确的定位，也能定性区分表面裂纹的深度。
|
| 关 键 词： | 表面波 钢轨踏面裂纹 B扫描 移位叠加 |
Surface Wave B Scan Imaging Detection of Rail Tread Cracks |
| |
| ZHANG Zai-Dong,REN Ming-Zhu.Surface Wave B Scan Imaging Detection of Rail Tread Cracks[J].Nondestructive Testing,2011(9):65-67,71. |
| |
| Authors: | ZHANG Zai-Dong REN Ming-Zhu |
| |
| Affiliation: | ZHANG Zai-Dong~1,REN Ming-Zhu~2 (1.Guangzhou Special Pressure Equipment Inspection and Research Institute,Guangzhou 510000,China,2.Guangzhou Institute of Measuring and Testing Technology,China) |
| |
| Abstract: | This paper aims to use ultrasonic surface waves to detect the rail tread crack.A group of specimens with different depth were designed and produced.The test was carried out by the imaging method of B scan along the vertical side of rail by 0.5 MHz surface wave probe.In order to decrease the disadvantage of low resolution that caused by multi-modes,this paper used shift superimposed technique for different place of A scan wave by data processing software.This method could achieve accurate position of the cra... |
| |
| Keywords: | Surface wave Rail tread cracks B-scan Shift superimposed technique |
| 本文献已被 CNKI 维普 等数据库收录！ |
