中南大学学报（自然科学版）2017，Vol.48Issue(10)：2606-2613,8.DOI:10.11817/j.issn.1672-7207.2017.10.007
筒形件焊接三维全场变形测量
Measurement on 3D full-field deformation of cylindrical workpieces welding
摘要
Abstract
In view of full-field deformation measurement problem for cylindrical workpieces welding by traditional methods, a method was proposed to measure the three-dimensional full-field static deformation for cylindrical workpieces welding. Firstly, a method for coordinate registration by encoding points was introduced to unify the same deformation points under different deformation conditions. Then, an algorithm based on deep search for the same deformation points matching was proposed to make the weak deformation points in the weld zone match successfully. Finally, based on the above key technologies and VS2010 platform, a measurement system was developed for cylindrical workpieces three-dimensional full-field static deformation. To verify the feasibility of the proposed method, experiments of metal inert gas (MIG) welding, laser welding and accuracy verification using calibration cross were designed and conducted. The results show that the accuracy obtained by this method is 0.02 mm/1 m, and the three-dimensional full-field static deformation measurement is achieved for cylindrical workpieces welding. The method has the advantages of non-contact, high accuracy and direct display, which provides an effective method for the three-dimensional full-field static deformation of structure workpieces welding.关键词
筒形件/焊接变形/三维测量/坐标配准/深度搜索Key words
cylindrical workpieces/welding deformation/3D measurement/coordinate registration/deep search分类
矿业与冶金引用本文复制引用
冯超,梁晋,牌文延,龚春园,王晓光..筒形件焊接三维全场变形测量[J].中南大学学报（自然科学版）,2017,48(10):2606-2613,8.基金项目
国家自然科学基金资助项目(51421004,51275378,51275389) （51421004,51275378,51275389）
广东省公益研究与能力建设专项资金资助项目(2014A010104003)(Projects (51421004,51275378,51275389) supported by the National Natural Science Foundation of China （2014A010104003）
Project (2014A010104003) supported by Guangdong Public Research and Capacity Building Special Funds) （2014A010104003）
