Deformation measurements in welded plates based on close-range photogrammetry

被引：5
|
作者：
Chen, Bai-Qiao [1 ]
Guedes Soares, C. [1 ]
机构：
[1] Univ Lisbon, Inst Super Tecn, Ctr Marine Technol & Engn CENTEC, Av Rovisco Pais, P-1049011 Lisbon, Portugal
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE | 2016年 / 230卷 / 04期
关键词：
Photogrammetry; surface modeling; initial imperfection; welding deformation; STRENGTH;
D O I：
10.1177/0954405414558734
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A global approach for measuring weld-induced deformations in plated structures is presented in this article. Three-dimensional deformation models of butt-welded plates were obtained before and after three welding tests by using close-range photogrammetry to generate the displacement field from sets of digital images. The procedure was validated against direct measurements of the deformations. A polynomial equation was found to be the best fitting to the surface of a butt-welded plate. Based on the modified Fourier series, a proposed function to represent complex surface was validated. A comparative study on the sampling element size was also included.
引用
收藏
页码：662 / 674
页数：13
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