doi:10.16186/j.cnki.1673-9787.2020040021

Received:2020/04/07

Revised:2020/06/14

Published:2021/07/15

Study on nondestructive verification method of spatial location model forpore defects in double T style weldments

LI Changyun1, ZHAO Hongfeng1,2, SHI Duanhu2, WU Sanhai1,2, XU Lei1

1.School of Materials Science and Engineering， Henan Polytechnic University， Jiaozuo 454000 ，H&nan， China;2.School of Electromechanical Engineering ，Xuzhou University of Technology ，Xuzhou  221111 ， Jiangsu， China

Abstract:In order to solve the problem of non-ideal verification accuracy of spatial location model for pore defects in double T style weldments， a simulation method of X-ray detection images for double T style weldments was proposed. The X-ray detection simulation images of weldments were obtained， and the spatial location data of presetting defects in simulation images were extracted automatically. Then the nondestructive verification of spatial location model was achieved by comparing the spatial location data of automatic extraction and presetting. The experimental results showed that the proposed method was feasible to the nondestructive verification of pore defects spatial location model in double T style weldments， the positioning accuracy of defects depth was 0. 52% ， the positioning accuracy of defects deviation was 1.91 % ， and there was no error along the weld longitudinal direction. The proposed method could provide a solid basis for the study of spatial distribution features of defects and for the structural integrity evaluation of weldments.

Key words:double T style weldment;simulation of X-ray detection image;spatial location model;nondestructive verification

 双面T形焊件气孔缺陷空间定位模型无损伤验证方法研究_历长云.pdf