焊管2025，Vol.48Issue(7)：25-35,11.DOI:10.19291/j.cnki.1001-3938.2025.07.004
超声相控阵探头近表面声场有限元仿真研究
Finite Element Simulation Research on near Surface Sound Field of Ultrasonic Phased Array Probes
摘要
Abstract
To study the distribution of the near surface focused sound field of ultrasonic phased array probes,a two-dimensional sound field simulation model was established using finite element analysis software to analyze the effects of different phased array probe parameters and wedges on the near surface focused sound field at a focal length of 2 mm.The results indicate that the amplitude of the focal point of the sound field increases with the increase of element width,element number,and element frequency,and decreases with the increase of element spacing.Due to the influence of grating lobes,the focal amplitude first increases and then decreases with the increase of frequency.The size of the focal zone decreases with the increase of the number and frequency of the array elements,and the detection resolution improves with little variation with other parameters.The results show that the amplitude of the sound field focus increases with the increase of the element width,the number of elements and the element frequency,and decreases with the increase of the element spacing.Although the focusing delay rule changes after the installation of wedges,the sound field characteristics remain unchanged with the variation of probe parameters.Therefore,when using ultrasonic phased array to detect near surface defects,a smaller element spacing should be selected,and a larger element width should be chosen as much as possible when the element spacing is determined.The optimal detection frequency is 5 MHz,and the number of probe elements can be increased to improve detection sensitivity and resolution without redundancy in the system.When the blind spot of the probe is large,install a wedge block for detection.关键词
超声相控阵检测/近表面缺陷/阵元/声场/声压Key words
ultrosonic phased array testing/near-surface detect/array element/sound field/sound pressure分类
矿业与冶金引用本文复制引用
李智海,宋鸿玉,邬冠华,陈曦,王杏华,孙磊..超声相控阵探头近表面声场有限元仿真研究[J].焊管,2025,48(7):25-35,11.基金项目
国家重点研发计划项目"大型点阵结构无支撑高效增材制造技术与装备"(项目编号2022YFB4601904). （项目编号2022YFB4601904）
