作者：张超才1,2, 韩军1, 龙晋桓1, 李士林1,2
作者单位：1. 中国科学院福建物质结构研究所泉州装备制造研究所，福建 晋江 362200;
2. 厦门理工学院电气工程与自动化学院，福建 厦门 361024
关键词：角焊缝;CIVA仿真;裂纹;表面粗糙度;晶粒度
摘要：
小径薄壁管座角焊缝由于特殊焊缝结构、壁厚、曲率等结构因素的影响，导致常规超声相控阵检测存在一定的局限性。针对薄壁管座角焊缝超声相控阵检测难点，利用CIVA仿真软件对小径薄壁管座角焊缝专用超声相控阵探头进行表面粗糙度、晶粒度等材料特性对声场影响的仿真研究，揭示其对声场的影响规律。并对不同大小、位置裂纹进行缺陷响应模拟分析，总结裂纹响应变化规律及特征，验证专用超声相控阵探头的检测能力。仿真结果表明：探头置于母管侧的超声相控阵接触式横波检测方式可有效检出不同位置、大小的裂纹缺陷，并实现对其定位、定性和定量，特别是对于坡口裂纹具有较高的检测灵敏度。
CIVA simulation of fillet weld inspection of small diameter and thin-walled pipe base based on ultrasonic phased array
ZHANG Chaocai1,2, HAN Jun1, LONG Jinhuan1, LI Shilin1,2
1. Quanzhou Instituie of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Jinjiang 362200, China;
2. School of Electrical Engineering and Automation, Xiamen University of Technology, Xiamen 361024, China
Abstract: Due to the special weld structure, wall thickness, curvature and other structural factors of small diameter and thin-walled pipe seat fillet welds, conventional ultrasonic phased array testing has certain limitations. Aiming at the difficulty of ultrasonic phased array detection for fillet welds of thin-walled pipe sockets, CIVA simulation software was used to analyze the effect of surface roughness, grain size and other material characteristics on the sound field of a special ultrasonic phased array probe for fillet welds of small-diameter thin-walled pipe sockets. Simulation research reveals its influence on the sound field. The defect response simulation analysis of cracks of different sizes and positions is carried out, and the law and characteristics of crack response are summarized, and the detection ability of the special ultrasonic phased array probe is verified. The simulation results show that the ultrasonic phased array contact shear wave detection method with the probe placed on the side of the main tube can effectively detect crack defects of different positions and sizes, and realize their positioning, qualitative and quantitative, especially for groove cracks. High detection sensitivity.
Keywords: fillet weld;CIVA simulation;crack;surface roughness;grain size
2021, 47(7):19-25 收稿日期: 2020-09-02;收到修改稿日期: 2020-10-13
基金项目: 国家自然科学基金（11705208）；中国科学院对外重点合作项目（121835KYSB20180062）；福建省科技计划项目（2018T3007，2019T3025）；泉州市科技计划项目（2019STS07）
作者简介: 张超才(1995-),男,安徽阜阳市人,硕士,主要从事超声检测研究
参考文献
[1] 李世霞. 耐热钢T91/P91焊接工艺[D]. 兰州: 兰州理工大学, 2017.
[2] 常俊杰,罗文斌,曾雪峰, 等. 基于空气耦合超声对储油罐液位的检测[J]. 中国测试, 2020, 46(9): 34-39
[3] 小径管管座角接焊接接头相控阵超声检测技术规程: DB 37/T 3143—2018[S]. 山东: 山东省质量监督局, 2018.
[4] 姚建松, 董吉原, 章丽虎. 管座角焊缝缺陷的相控阵检测定位准确性的研究[J]. 无损检测, 2019, 41(6): 67-70
[5] 齐高君, 王耀礼, 丁成海, 等. 小径管管座角焊缝相控阵超声检测工艺[J]. 无损检测, 2019, 41(10): 44-49
[6] GENGEMBRE N, LHEMERY A. Pencil method in elastodynamics: application to ultrasonic Field computation[J]. Ultrasonics, 2000, 38: 495-499
[7] DARMON M, LEYMARIE N, CHATILLON S, et al. Modelling of scattering of ultrasounds by flaws for NDT[C]//Springer in Physics. Springer Proceedings in Physics, 2009.
[8] CHAPMAN R K, PEARCE J E, BURCH S F, et al. Recent in-house developments in theoretical modelling of ultrasonic inspection[J]. OR Insight, 2007, 49(2): 93-97
[9] DARMON M, DORVAL V, KAMTA DJAKOU A, et al. A system model for ultrasonic NDT based on the Physical Theory of Diffraction (PTD)[J]. Ultrasonics, 2016, 64: 115-127
[10] 刘源,刘雨航,武孟玺, 等.燃气表气阀配合面粗糙度及形貌特征研究[J].中国测试,2020,46(8):143-148.
[11] 宋永锋, 李雄兵, 吴海平, 等. In718晶粒尺寸对超声背散射信号的影响及其无损评价方法[J]. 金属学报, 2016, 52(3): 378-384
[12] 王长才, 侯德彬, 邓英林, 等. P91耐热钢焊接接头服役组织与性能研究[J]. 热加工工艺, 2019, 48(9): 245-247
[13] 丁珊珊, 金士杰, 何晓晨, 等. 基于仿真方法的CFRP复合材料孔隙率与超声衰减系数的关系[J]. 复合材料学报, 2018, 35(1): 89-94
[14] 姜磊. 罗维祺. 黄浩, 等. 超临界锅炉四大管道管座角焊缝裂纹分析及预防[J]. 特种设备安全技术, 2017(4): 7-9
