【摘要】 叙述四通道涡流探伤信号的计算机处理与图形显示系统的开发背景、关键技术及系统整体结构.采用扇区报警方法,提高了缺陷类型判断能力.实际应用结果表明,能分开间隔150mm的两个缺陷,不漏检,达到国家规定的标准.更多还原

【Abstract】 The development background, key technology and the whole structure of the data processing and image display system for four-channel eddy current testing instrument are described. The defect discriminating a-bility of the system has been improved by using sector alarm method. Practical applications show that two defects with distance of 150mm can be detected out with the system. It is in keeping with national standard.更多还原