基于CIVA仿真的管道超声内检测参数设计与优化

Parameter Design and Optimization of Ultrasonic Inner Inspection for Pipes Based on CIVA Simulation

为了设计并优化管道超声内检测工艺参数,从检测原理、聚焦法则、工艺参数等方面阐述了超声相控阵在管道内检测中对凹面结构检测的应用,基于CIVA仿真对安装在管道内部的凸面相控阵装置参数及其检测工艺展开研究,模拟了带有焊缝、环切槽、侧向孔等缺陷特征的管道的声场特性,并利用仿真获得的数据演化规律对水程和阵列动态孔径进行了优化。基于仿真与优化获得的参数制造了相应的相控阵检测装置,并通过对样管的超声检测测试,验证了设计参数的合理性以及基于CIVA仿真设计装置的可行性。

In order to design and optimize the parameters of ultrasonic inner inspection, the application of ultrasonic phased array in the detection of concave structure was described from the aspects of inspection principle,focal law and process parameters. Based on CIVA simulation, the parameters and detection technology of convex phase phased array device installed inside the pipe were studied,and the ultrasound field characteristics in the pipe were simulated with defects characteristics of welds,circumferential cutting grooves, lateral hole and so on were simulated. Furthermore,the uhrasound propagation in water and dynamic element window were optimized by using the obtained simulation data. Thus, the phased an＇av detection device was fabricated with the reference of the characteristics above. The experiments on the testing pipe were conducted and the rationality of the design parameters was verified,as well as the feasibility of designing device with the assistance of CIVA simulation.