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[1]陈汉新,余刚,杨诗琪,等.焊缝的超声波检测与有限元仿真[J].武汉工程大学学报,2014,(05):53-58.[doi:103969/jissn16742869201405012]
　CHEN Han xin,YU Gang,YANG Shi qi,et al.Ultrasonic detection in weld with finite element analysis[J].Journal of Wuhan Institute of Technology,2014,(05):53-58.[doi:103969/jissn16742869201405012]
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焊缝的超声波检测与有限元仿真(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年05期
页码:
53-58
栏目:
机电与信息工程
出版日期:
2014-05-31

文章信息/Info

Title:
Ultrasonic detection in weld with finite element analysis
文章编号:
16742869(2014)05005306
作者:
陈汉新; 余刚; 杨诗琪; 刘岑; 孙魁
武汉工程大学机电工程学院，湖北 武汉 430205
Author(s):
CHEN Hanxin; YU Gang; YANG Shiqi; LIU Cen; SUN Kui
School of Mechanical and Electric Engineering,Wuhan Institute of Technology，Wuhan 430025,China
关键词:
超声波衍射时差法; 焊缝; 有限元
Keywords:
time of flight diffraction method; weld; finite element
分类号:
TB553
DOI:
103969/jissn16742869201405012
文献标志码:
A
摘要:
为了避免超声波在检测焊缝的过程中因噪声信号干扰而导致结果的错估，首先采用MUTLI软件中的超声波衍射时差法（TOFD）来检测人为的焊缝缺陷试块，得到准确的A扫图与TOFD图像；然后利用ANSYS软件模拟仿真超声波的检测过程，根据惠更斯原理建立超声波检测的有限元数值模型.将超声波的传播过程看做对试块的加载过程，从不同的节点上施加具有时间延迟的载荷，得到声压幅值图像.对比分析实验幅值图像与仿真幅值图像，两种图像的相似度很高，证实有限元仿真方法有助于超声波对焊缝的检测.从仿真的幅值图像中可以判定实验图像中的干扰信号，对检测结果的误差分析具有很大的帮助.
Abstract:
To avoid the misestimate of detection results that caused by the noise signal in the process of weld ultrasonic testing during practical detection,Firstly,the weld defects in artificial sample were detected by the ultrasonic time of flight diffraction method（TOFD） of Mutli software in the experiment ,and A scan and TOFD images were obtained; secondly,the propagation of ultrasound in artificial defect test block was simulated by ANSYS software,and the numerical model of ultrasonic testing was established according to the Huygens principle.The diagram of sound pressure amplitude was obtained by imposing the different time delay nodes on load,in which the ultrasonic propagation process was seen as the process of exerting load.Simulation results are compared with the experimental results,showing the high similarity,which demonstrates that the finite element simulation method is useful to assist ultrasonic testing of welds.The interference signals determined from the simulation of the ultrasonic propagation is helpful to error analysis of the test results.

参考文献/References:

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相似文献/References:

[1]吴和保,龙玉阳,胡汉华,等.吊耳焊缝应力分析及其结构设计[J].武汉工程大学学报,2012,(4):69.
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备注/Memo

备注/Memo:
收稿日期：20140410作者简介：陈汉新（1969），男，湖北武汉人，教授，博士.研究方向：机械故障诊断、无损检测和系统状态检测.
更新日期/Last Update: 2014-06-15