承压管道壁厚自动化检测系统研制

研制一套自动化超声检测系统,对1~2 mm壁厚承压管道的均匀性进行检测,获得承压管道全壁厚信息,为航天系统中的承压管道可靠性和安全性设计提供依据。超声检测系统采用六点矩阵控制方法,获取承压管道周向的全壁厚信息。文中研制的系统包括超声硬件系统;机械执行系统,实现超声换能器的夹持与运动;超声软件系统,搭建数据算法,对检测信号进行分析处理。试验结果表明该自动化超声检测系统对承压管道全壁厚信息的检测精度不低于0.02 mm。该超声检测系统对其它无损检测研究和系统开发具有很好的参考价值。

Automatic detecting system for wall thickness of pressure tube

An automated ultrasonic testing system was developed to detect the even degree of 1～2 mm wall thickness of the pressured tube,obtain the complete wall thickness information of the pressured tube,and provide a design basis for reliability and security of the pressured tube applied to any aerospace systems.The 6-point matrix control method is used in the ultrasonic examination system to obtain the complete wall thickness information of the pressured tube.This system consists of ultrasonic hardware and actuating mechanism subsystems which are applied to the clamping and motion of ultrasonic transducer.The ultrasonic software subsystem is used to establish a data algorithm and deal with the measurement signal.The experimental outcome indicate that the accuracy of the ultrasonic detecting system for detecting the complete wall thickness information of the pressured tube is not less than 0.02 mm.The ultrasonic detecting system has a very good referential value for the study and system development related to NDT.