| 基于声场计算的管道曲率对焊缝二次波检测的影响 |
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| 引用本文： | 张益成,李晓红,丁辉.基于声场计算的管道曲率对焊缝二次波检测的影响[J].无损检测,2011(1):5-8. |
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| 作者姓名： | 张益成 李晓红 丁辉 |
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| 作者单位： | 武汉大学动力与机械学院; |
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| 摘 要： | 超声检测小径管焊缝时的缺陷定量与内壁曲率的关系鲜有研究。基于声场计算模型,研究了斜探头发射声束经不同曲率的小径管内壁反射后的散射声场,并以此计算出焊缝中点状、条状和球状三种不同反射体的回波信号。与DL-1试块DAC曲线作对比,得出了小径管内壁曲率对焊缝二次波检测的影响规律,为小径管二次波或多次波反射法检测评定缺陷的大小提供了理论依据。
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| 关 键 词： | 超声波检测 声场计算 小径管 二次波 DAC曲线 |
Effect of Tube Curvature Concerning Second Wave Detection Based on Calculation of Ultrasonic Filed |
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| ZHANG Yi-Cheng,LI Xiao-Hong,DING Hui.Effect of Tube Curvature Concerning Second Wave Detection Based on Calculation of Ultrasonic Filed[J].Nondestructive Testing,2011(1):5-8. |
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| Authors: | ZHANG Yi-Cheng LI Xiao-Hong DING Hui |
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| Affiliation: | ZHANG Yi-Cheng,LI Xiao-Hong,DING Hui(College of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China) |
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| Abstract: | The connection between the curvature of tube and the sizing of the defect in small diameter tube,detected by ultrasonic,was little concerned about.Based on the sound field calculation model,scattering ultrasonic field of the beam coming from the probe and reflected by the different tube curvature wall was studied,and then different regular reflector echo signals were calculated,and the comparison of the echo computed and DAC from DL-1 sample was analyzed,the regulation of connection was found,which could su... |
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| Keywords: | Ultrasonic testing Ultrasonic field calculation Small diameter tube Second wave DAC curve |
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