奥氏体不锈钢焊缝相控阵超声波检测探头设计与验证

Design and verification of phased array ultrasonic testing probe for Austenitic stainless steel welds

针对某水电工程50 mm厚奥氏体不锈钢焊缝的超声波检测,采用传统的超声波检测技术存在一定的局限性。文章基于先进的相控阵超声波检测技术,采用CIVA仿真软件,设计了一款双晶矩阵相控阵探头,详细介绍了探头的关键参数以及声场仿真结果。参考试块验证结果表明,所设计的探头的结构小巧,检测信噪比高,为后续奥氏体不锈钢焊缝相控阵超声波检测工艺的开发奠定了基础。

For the ultrasonic inspection of 50 mm thick austenitic stainless steel welds in a hydropower project, the traditional ultrasonic inspection technology has certain limitations.Based on the advanced phased array ultrasonic testing technology and CIVA simulation software, a bimorph matrix phased array probe is designed in this paper. The key parameters of the probe and the simulation results of sound field are introduced in detail.The test block verification results show that the designed probe has a small structure and high detection signal-to-noise ratio, which lays a foundation for the development of subsequent phased array ultrasonic detection technology for austenitic stainless steel welds.