NUMERICAL STUDY ON TWO CIRCLE VOID FLAWS IN CYLINDERS
In this article, three-dimensional Kirchhoff inverse scattering method is modified to convenient form for a cylindrical specimen that includes threedimensional defects including two-circle voids. Ultrasonic measurements are carried out. The measurement area in the modified methods is restricted in the plane perpendicular to the axis of cylindrical specimen. Thats to say that the method is modified to convenient form to use measured waveforms in the X-xi plane. The measured wave data are fed into the inversion method and cross-sectional images are obtained. We get the numerical results from all directions by finite element method. It is verified that the Kirchhoff inversion works well for shape reconstruction of defects.
Finite element Kirchhoff approximation Shape reconstruction Scattering
Gang-feng ZHENG Bin WU Cun-fu HE
College of Materials Science and Engineering, Anhui University of Science and Technology, 168 Shunge College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology
国际会议
深圳
英文
154-156
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）