圆柱体内缺陷重构的误差分析及校正方法  

Error Analysis and Correction Method of Defects Reconstruction in Cylindrical Object

作　　者：刘蔺慧 陈友兴[1] 王召巴[1] LIU Lin-Hui CHEN You-Xing WANG Zhao-Ba(College of Information ＆Communication Engineering, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学信息与通信工程学院,太原030051

出　　处：《计算机系统应用》2017年第2期266-270,共5页Computer Systems & Applications

基　　金：国家自然科学基金(61201412)

摘　　要：本文针对圆柱体构件超声检测,利用轮廓线法作出了缺陷定位图,通过分析发现了轮廓线法重构圆柱体构件气孔缺陷误差产生是受定位偏角的影响,并用PZFlex超声有限元软件仿真了缺陷回波信号,验证了实验结论,并分析了缺陷位置、大小和信号衰减对定位偏角的影响,为进一步缺陷边界重构奠定了基础.This paper makes defect location maps for cylinder component ultrasonic testing by using Contour Method and finds that the generation of error of Contour Method for porosity defects reconstruction in cylindrical member is affected by the positioning angle. The experimental results are verified with flaw echo signal which is simulated by finite element software of PZFlex. The influence of the defect location, size and signal attenuation for the positioning angle is analyzed, which lays a foundation for further defect boundary reconstruction.

关 键 词：缺陷重构 圆柱体 超声检测 PZFlex仿真 

分 类 号：TG115.285[金属学及工艺—物理冶金]