摘要
通过定义超声回波相关时频特征量,提出基于超声回波时频特征量的焊点质量自动评价方法。通过数据统计分析,建立了便于在线自动检测的量化焊点质量评价标准,实现了汽车点焊质量的自动化评价。实际检测效果表明,基于该方法的检测系统能够快速有效地自动识别八种焊点质量类型,能够初步运用于汽车点焊质量的在线自动检测。
A spot welding quality automatic evaluation methodology was proposed by defining the time-frequency characteristics of ultrasonic echo, and a spot welding quality evaluation criterion was built, which was convenient for online automatic detection by data statistical analysis. Finally, vehicle spot welding quality was evaluated automatically. Practical test results indicate the detecting system based on the proposed method can automatically identify eight types of spot welding quality quickly and effectively, so this system may preliminarily apply to online automatic detection of spot welding quality.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2016年第8期1102-1106,共5页
China Mechanical Engineering
基金
国家自然科学基金资助重点项目(61232014)
广西科技计划资助项目(桂科攻1348005-1
桂科攻14122005-7)
中央高校基本科研业务费专项资金资助项目
关键词
超声检测
在线自动检测
焊点质量评价标准
时频特征
ultrasonic testing
online automatic detection
spot welding quality evaluation criteri-on
time-frequency characteristics
