T形焊接接头相控阵超声检测方法研究  

Research on Phased Array Ultrasonic Testing Method for T-shaped Welded Joint

作　　者：姜学平 李传玉 孙磊[1] 余新海[1] 余世宏[1] 朱琪 杨训[1] JIANG Xueping;LI Chuanyu;SUN Lei;YU Xinhai;YU Shihong;ZHU Qi;YANG Xun(China Energy Engineering Group Anhui No.1 Electric Power Construction Co.,Ltd.,Hefei,Anhui 230088,China;College of I0T Engineering,Hohai University,Changzhou,Jiangsu 213022,China)

机构地区：[1]中国能源建设集团安徽电力建设第一工程有限公司,安徽合肥230088 [2]河海大学物联网工程学院,江苏常州213022

出　　处：《建筑施工》2021年第4期721-723,727,共4页Building Construction

基　　金：江苏省重点研发计划(社会发展)项目(BE2019649);国家自然科学基金项目(11604076)。

摘　　要：T形焊接接头广泛存在于特种设备、海洋平台和建筑结构中,对其进行可靠的检测是设备正常工作的重要保障,相控阵超声检测技术由于其检测灵活可靠,可以用于T形焊接接头的检测。根据实际检测需求,对中厚板T形焊接接头的检测方法和工艺进行研究。首先设计制作模拟缺陷试块;然后设计检测工艺,分别从翼板正面、腹板侧进行扇形扫描,并从翼板背面采用电子扫描方法进行检测,采用数值方法对检测工艺参数下的声束覆盖进行了仿真;最后进行检测试验,试验检测结果与设计缺陷类型和尺寸吻合,建议检测中可以先采用纵波从翼板背面进行电子扫描检测出缺陷,而后采用扇形扫描进行缺陷的进一步检测评判。研究成果为采用相控阵超声多种检测方法联合检测T形焊接接头的方法、工艺设计和标准制定提供了重要参考。T-shaped welded joints are widely used in special equipment, offshore platforms and building structures. Reliable detection of T-shaped welded joints is an important guarantee for normal operation of equipment. Phased array ultrasonic testing technology can be used to detect T-shaped welded joints because of its flexibility and reliability. According to the actual detection requirements, the detection method and process of T-shaped welded joint of medium and heavy plate are studied. Firstly, the simulated defect test block is designed and manufactured. Secondly, the detection process is designed. Sector scanning is carried out from the front and web sides of wing plate, and the electronic scanning method is used to detect from the back of wing plate. The numerical method is used to simulate the acoustic beam coverage under the detection process parameters. Finally, the detect test is performed and the test results are consistent with the design defect type and size. It is suggested that the longitudinal wave can be used to detect the defects from the back of the wing plate by electronic scanning, and then the fan-shaped scanning can be used to further detect and evaluate the defects. The research results provide an important reference for the joint inspection method, process design and standard formulation of T-shaped welded joint using phased array ultrasonic testing methods.

关 键 词：T形焊接接头 扇形扫描 衍射波 相控阵超声检测 工艺仿真 

分 类 号：TU755[建筑科学—建筑技术科学]