摘要
船闸闸门是一种以钢为基材,通过焊接工艺制作而成的钢闸门结构,服役中焊缝受环境因素影响会出现损伤,损伤的积累会导致拦水泄漏,危及下游人民生命财产安全。本文提出一种利用阵列超声方法实现船闸焊缝的可视化无损检测,通过阵列超声传感器采集全波场回波信号,利用全聚焦成像方法现实缺陷的超声成像,进而对缺陷进行定量分析。对实验室钢结构焊缝试块进行方法验证,结果表明阵列超声方法检测误差小,精度高;对界牌水利枢纽中船闸中的焊缝缺陷进行检测,共检测出7处缺陷。结果表明:阵列超声检测方法不仅可以形象地表征焊缝缺陷的分布区域以及形状,排除裂纹、未熔合类的致命缺陷,还可以实现焊缝的尺寸、所处深度、延伸方向等定量化分析。
The gate is a steel gate structure made by welding with steel as the base material.During service,the weld will be damaged due to environmental factors.The accumulation of damage will lead to water leakage and endanger the lives and property of downstream people.This paper proposes a method to realize visual non-destructive inspection of ship lock welds by using array ultrasonic method.The full-wave field echo signal is collected by the array ultrasonic sensor,and the ultrasonic imaging of the defect is realized by the all-focus imaging method,and then the defect is quantitatively analyzed.The weld defect in the ship lock of the Jiepai Water Conservancy Project was inspected,and a total of 7 defects were detected.The results show that the proposed array ultrasonic inspection method can not only visually characterize the distribution area and shape of weld defects,but also achieve the quantitative analysis of weld size,depth,and extension direction.
作者
许旭东
袁尧
邓彬彬
张俊
李忠斌
杨帆
Xu Xudong;Yuan Yao;Deng Binbin;Zhang Jun;Li Zhongbin;Yang Fan(Jiangsu Hydraulic Research Institute,Nanjing210017,Jiangsu;Zhangjiagang City Yangtze River Flood Control Project Management Office,Zhangjiagang215625,Jiangsu;Taixing Water Conservancy Department,Taixing225400,Jiangsu;School of Hydraulic Science and Engineering,Yangzhou University,Yangzhou225009)
出处
《吉林水利》
2021年第10期5-8,16,共5页
Jilin Water Resources
基金
江苏省水利科技项目(2020029)
江苏省水利科学研究院自主科研项目(2020z026)
江苏省高校自然科学研究重大项目(20KJA570001)
关键词
闸门
焊缝
无损检测
阵列超声
全聚焦成像
sluice gate
welds
non-destructive testing
array ultrasound
full-focus imaging
