建筑钢结构焊缝超声波探伤失误案例分析  

Fault Case Analysis of Ultrasonic Flaw Detection for Building Steel Structure Welding Seam

作　　者：杨晓东[1,2] 杨俊芬 李倩 车航宇 高原 郑子涵 王聪 YANG Xiaodong;YANG Junfen;LI Qian;CHE Hangyu;GAO Yuan;ZHENG Zihan;WANG Cong(College of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China;Xi’an University of Architecture and Technology Engineering Technology Co.,Ltd.,Xi’an,Shaanxi 710055,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]西安建筑科大工程技术有限公司,陕西西安710055

出　　处：《施工技术（中英文）》2023年第14期40-45,98,共7页Construction Technology

基　　金：陕西省科技厅重点研发计划(2022GY-318);国家级大学生创新创业训练训练计划(S202010703051);西安建筑科技大学15SSRT项目;西安建筑科技大学校企联合基金(XAJD-YF22N017)。

摘　　要：分析2个建筑钢结构焊缝超声波探伤失误因素,包括选用焊缝探伤探头规格、探伤方法未充分考虑实际焊缝构造特点及探伤表面回波能量补偿不合理、反射回波信息分析失误。通过理论分析及试验比对,提出了避免钢结构焊缝超声波探伤缺陷漏检或误判措施。首先采用小晶片探头(5P6×6系列)分析焊缝构造特点;其次探伤对比反射体试块表面状况应与所检构件相同或类似,探伤方法宜采用直射法和多次反射法相结合;最后要提高检测人员对反射回波信号分析的技能,有效区分真伪缺陷回波信息。The factors of ultrasonic flaw detection errors of two building steel structure welds are analyzed,including the selection of weld flaw detection probe specifications,the flaw detection method doesn’t fully consider the actual weld structure characteristics,the detection surface echo energy compensation is unreasonable,and the reflection echo information analysis error.Through theoretical analysis and experimental comparison,the measures to avoid missed flaw detection or misjudgment of ultrasonic flaw detection in steel structure welds are proposed.Firstly,the characteristics of weld structure are analyzed,and the small chip probe(5P6×6 series)is used.Secondly,the surface condition of the reflective test block should be the same or similar to that of the tested component,and the flaw detection method should be combined with the direct method and the multiple reflection method.Finally,it is necessary to improve the flaw detection personnel’s skills in analyzing the reflected echo signal and effectively distinguish the true and false defect echo information.

关 键 词：钢结构 焊缝 超声波 探伤 缺陷 检测 

分 类 号：TU391[建筑科学—结构工程] TV523[水利工程—水利水电工程]