奥氏体不锈钢焊缝超声衍射时差法检测的有限元仿真及应用
Finite element simulation and application of ultrasonic TOFD testing of austenitic stainless steel weld
摘 要
基于有限元方法建立了奥氏体不锈钢焊缝超声衍射时差法（TOFD）检测过程的数值模型，结合试验方法分析了超声波与焊缝组织结构的相互作用机理，提出降低焊缝散射噪声干扰的探头布置方法。结果表明，有限元模型可模拟超声波在奥氏体不锈钢焊缝中出现的各向异性特征，包括声场扭曲、声能散射和衰减现象。结合检测试验证明，通过改变探头检测面，可降低焊缝组织结构对TOFD检测信号的不利影响。
奥氏体不锈钢焊缝
各向异性
有限元模型
ultrasonic time-of-flight diffraction
austenitic stainless steel weld
anisotropic
finite element model
Abstract
In the research, the finite element models of ultrasonic TOFD testing of austenitic stainless steel welds are established to investigate the anisotropic characteristics of wave propagation, and then, the distribution method of probes for reducing the interference of weld scattering noise is proposed. The results show that the finite element model can be used for simulating the wave distortion, acoustic energy scattering and attenuation in the austenitic stainless steel welds. The experimental results proves that the adverse effects of weld structure on the testing signal can be reduced by choosing the detection surface, which is in consistence with the numerical simulation.
中图分类号 TG115.28 DOI 10.11973/wsjc202007002
所属栏目 试验研究
基金项目 宁波市特种设备检验研究院院级项目（Y-2016-013）
收稿日期 2019/11/5
修改稿日期
网络出版日期
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备注黄焕东(1979-),男,硕士,高级工程师,主要从事承压类特种设备检验检测工作
引用该论文: HUANG Huandong,HU Lichen,HU Weiwei,ZOU Bin,LI Liubo,CHEN Zhenhua. Finite element simulation and application of ultrasonic TOFD testing of austenitic stainless steel weld[J]. Nondestructive Testing, 2020, 42(7): 5～9
黄焕东,胡利晨,胡炜炜,邹斌,励柳波,陈振华. 奥氏体不锈钢焊缝超声衍射时差法检测的有限元仿真及应用[J]. 无损检测, 2020, 42(7): 5～9
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参考文献
【1】王长建,杜南胜,汪文锋. 加氢装置TP321不锈钢管道焊缝裂纹产生原因分析[J]. 理化检验-物理分册, 2015,51(6):445-448.
【2】迟大钊, 刚铁, 姚英学, 等. 一种基于超声TOFD法的近表面缺陷检测模式[J]. 焊接学报, 2011,32(2):29-32,118.
【3】CHEN Zhenhua, HUANG Guoliang, LU Chao, et al. Characteristic of wave propagation in austenitic stainless steel weld and its application in ultrasonic TOFD testing[J]. Materials Evaluation,2018,76:1515-1524.
【4】盛朝阳, 刚铁, 迟大钊. 基于分水岭方法的超声TOFD检测图像分割[J]. 机械工程学报, 2011, 47(8):39-44.
【5】李建忠, 刘国奇, 陈振华, 等. 基于小波包分解的不锈钢焊缝超声TOFD检测信号及缺陷信号提取[J]. 无损检测, 2015, 37(1):38-41.
【2】迟大钊, 刚铁, 姚英学, 等. 一种基于超声TOFD法的近表面缺陷检测模式[J]. 焊接学报, 2011,32(2):29-32,118.
【3】CHEN Zhenhua, HUANG Guoliang, LU Chao, et al. Characteristic of wave propagation in austenitic stainless steel weld and its application in ultrasonic TOFD testing[J]. Materials Evaluation,2018,76:1515-1524.
【4】盛朝阳, 刚铁, 迟大钊. 基于分水岭方法的超声TOFD检测图像分割[J]. 机械工程学报, 2011, 47(8):39-44.
【5】李建忠, 刘国奇, 陈振华, 等. 基于小波包分解的不锈钢焊缝超声TOFD检测信号及缺陷信号提取[J]. 无损检测, 2015, 37(1):38-41.
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