超声相控阵无损检测仪器关键技术研究  

Research on Key Technologies of Ultrasonic Phased Array Nondestructive Testing Instrument

作　　者：刘桂雄[1] 唐文明[1] 李宇中 LIU Giuxiong;TANG Wenming;LI Yuzhong(School of Mechanical ＆ Automotive Engineering,South China Univ.of Tech.,Guangzhou 510641,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《计测技术》2018年第3期99-111,共13页Metrology & Measurement Technology

基　　金：国家重大科学仪器设备开发专项(2013YQ230575);广州市科技计划项目(201509010008)

摘　　要：超声相控阵仪器作为无损检测关键设备之一,对材料内部缺陷分析、参数检测、失效评估等研究具有重要意义。本文从相控阵技术原理入手,分析编码激励、延时聚焦、数字信号快速处理、大数据传输与调度模块各关键模块工作机理,根据仪器检测性能指标要求,从仪器实时性、灵活性、精度等方面对关键技术进行深入研究,并通过实验验证各关键模块的实现效果。研究成果对于无损检测仪器的高精度化、高速化、高效率化,具有重要的实际应用价值。As one of the key equipment for non-destructive testing,ultrasonic phased array instrument is of great significance for internal defect analysis,parameter detection and failure evaluation of materials. This paper starts with the principle of phased array technology and analyzes the working mechanisms of key modules such as coded excitation,delayed focus, digital signal fast processing, big data transmission and dispatching module. According to the requirements of the instrument detection performance index,in-depth researches were conducted on the key technologies from the aspects of real-time,flexibility,and precision of the instrument,and experiments were carried out for verification of the implementation of key modules. The research results have important practical value for the high-precision,high-speed,and high-efficiency of nondestructive testing instruments.

关 键 词：超声相控阵 编码激励 延时聚焦 数字信号快速处理 大数据传输与调度 

分 类 号：TB9[一般工业技术—计量学] TG86[机械工程—测试计量技术及仪器]