欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
研究了模态对称曲线辅助识别管道近焊区缺陷的可行性。通过建立导波检测系统,基于导波模态对称检测理论,设计模态对称算法并绘制模态对称曲线,用于管道近焊区缺陷的识别,采集管道近焊区缺陷试验信号进行分析。结果表明,管道近焊区导波模态对称曲线幅值在缺陷处升高,且随着缺陷的截面积比的加大而增高。通过对回波信号进行小波包能量谱分析,发现回波信号的能量在缺陷处聚焦,验证了用模态对称曲线辅助识别管道近焊区缺陷的有效性。
英文摘要：
The feasibility of using modal symmetry curve for damage identification nearby pipe circumferential welds is discussed. Based on the theory of guided wave mode symmetry detection, the symmetry curve is drawn and the symmetric algorithm for damage identification is formulated. Analysis of the experimental signal of pipeline near- by welding defects shows that the magnitude of symmetry curve rises at the defect sites. And the signal analysis of wavelet packet energy spectrum reveals that the energy of the echo signal focuses on the defects, which verifies the effectiveness of modal symmetrical curve in the auxiliary identification of the pipe circumferential weld defects.
同期刊论文项目
同项目期刊论文
期刊信息
位置：