建筑钢结构钢板表面形貌对多次反射法探伤影响的研究  

Influence of Surface Topography of Steel Plate in Building Steel Structure on Multi⁃reflection Method Flaw Detection

作　　者：杨晓东[1,2] 张雪媛 李杰 张建科 李倩 YANG Xiaodong;ZHANG Xueyuan;LI Jie;ZHANG Jianke;LI Qian(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;Hengtong Engineering Testing 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 [3]衡通工程检测有限公司,陕西西安710055

出　　处：《施工技术（中英文）》2023年第14期46-52,83,共8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：采用金属超声波探伤仪、斜探头测试表面不同光泽度钢板试样及RB-1试块?3mm孔一次反射波和二次反射波距离-波幅(DAC)曲线及回归函数;采用Quanta200型扫描电镜,微观分析不同光泽度试样表面形貌。研究结果表明,试样原状钢板和抛磨后光泽度为2.1~117.5(RB-1试块为100),且光泽度不同试样表面微观形貌各异,导致原状钢板试样与RB-1试块?3mm横通孔一次反射波及二次反射波DAC曲线函数变化趋势多样,RB-1试块?3mm横通孔DAC曲线不可用一恒定值修正得到试样?3mm横通孔一次反射波及二次反射波DAC曲线。因此,建筑工程中焊缝探伤应利用待检构件钢板加工对比试块,采用一次反射波及二次反射波DAC曲线对焊接缺陷进行评定。The distance amplitude curves(DAC)and regression functions of the first and second reflection waves of steel plate samples with different surface gloss andϕ3mm hole of RB-1 test block were measured by metal ultrasonic flaw detector and angle probe.The surface morphology of samples with different gloss was analyzed by Quanta200 scanning electron microscope.The results show that the gloss range of the original steel plate and polished sample is 17~1175(RB-1 test block is 100),and the micro morphology of the sample surface is different with different glossiness,which leads to the variation trend of DAC curve function of the first reflection wave and the second reflection wave between the sample and the RB-1 test block.The first reflection and the second reflection wave DAC curve of the modelϕ3mm hole of RB-1 test block can not be corrected by a constant value.Therefore,in weld detection of the construction project,the steel plate of the component should be used to be inspected to process the test block,the welding defects should be evaluated by using the DAC curve of the first reflection wave and the second reflection wave.

关 键 词：钢结构 超声波 探伤 表面形貌 光泽度 多次反射法 

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