弹药筒超声自动检测方法与系统

Ultrasonic Method and System for Automatic Detection of Cartridges

提出了一种基于弹药筒下母线入射的恒定横波折射角方法,实现对不同规格弹药筒的微细裂纹检测,通过仿真和实验验证检测的可靠性。设计了用于弹药筒等小径筒体的多工位高速超声自动化检测系统,分析检测系统中缺陷信号和干扰信号的特征,提出一种扫描信号滤波报警算法,最终实现了弹药筒上料、检测、分选全过程自动化。结果表明,该系统能检测的最小缺陷深度为0.05 mm,检测速度可达1 200件/h,误判率仅为1%。

A method to detect micro cracks in different specifications of cartridges was proposed based on the constant shear wave refraction angle of busbar incidence.The reliability was verified by the simulation and experiment.Multi-station high-speed ultrasonic testing system for small-diameter cylinder,such as cartridge,was designed.A scanning signal filtering algorithm was proposed according to the signal features of defects and interferences.Finally,the automation of the whole processes,such as feeding detecting and sorting were realized. The results show that the system may detect the minimum crack depth of 0.05 mm, the detection speed is 1 200 pieces/h,and the misjudgment ratio is only 1%.