RESEARCH ON PIEZOELECTRIC PHASED ARRAY FOR STRUCTURAL HEALTH MONITORING

摘要：

A system is designed to control the piezoelectric phased array to conduct point-by-point scanning.Numerical simulation verifies the convergence of piezoelectric phased array.Near-field and far-field radiation pattern are also investigated to get the ultrasound field convergence plot.The scanning precision can be adjusted by changing the size of the focus patch.Defects in materials can be evaluated by analyzing the amplitude of the received signal and the time delay it reaches the transducer.By processing the received signal,we can reduce the negative effects of noises to solve the tough problem of processing the echo signal.

关键词： piezoelectric phased array transducer structural health monitoring echo signal

作者: Yi Sun Xingang Li X.D.Wang Zhanwen huang Shaorui Yang

作者单位: Department of Astronautics and Mechanics,Harbin Institute of Technology,Harbin,150001,China Department of Astronautics and Mechanics,Harbin Institute of Technology,Harbin,150001,ChinaDepartmen

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1369-1372

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）