噪声与振动控制2017，Vol.37Issue(3)：197-202,6.DOI:10.3969/j.issn.1006-1355.2017.03.040
流体管道超声导波无损检测
Fluid Pipe Nondestructive Testing Based on Ultrasonic Guided Waves
摘要
Abstract
Structural damage identification technology for fluid pipes is highly practical in engineering field. For the purpose of realizing the pipeline damage localization, the feasibility and recognition accuracy of the ultrasonic guided wave testing technique in fluid pipes are discussed in this study. A pipe made of 20# carbon steel is used to investigate the damage localization. According to dispersion equations, numerical method is applied to obtain various modal dispersion curves. Based on pipe wave propagation theory, and considering the influences of pipe wave patterns, dispersion characteristics and propagation velocity and the requirement of avoiding the truncated frequency, the excitation signals are selected. The guided wave transmission mechanism in the fluid pipes with different fluids is analyzed numerically by means of ABAQUS software. The method of probability density function is applied to realize fluid pipe damage localization. Finally, notches and holes are introduced to the fluid pipe in the experiment to verify the effectiveness of the proposed method. The experimental results and simulation results are consistent. The engineering practical value of this method is proved.关键词
振动与波/超声导波/流体管道/概率密度法/损伤定位Key words
vibration and wave/ultrasonic guided wave/fluid pipe/probability density method/damage localization分类
机械制造引用本文复制引用
张术臣,赵昕海,李鸿光,李富才..流体管道超声导波无损检测[J].噪声与振动控制,2017,37(3):197-202,6.基金项目
国家自然科学基金资助项目(11427801) （11427801）
