OS0404 溶接三次元変形の画像計測(OS4-1 シミュレーション技術,OS-4 溶接変形・残留応力の計測技術,シミュレーション技術)

概要

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Displacement during welding provides important information to understand the mechanisms of welding deformation and residual stress. In particular, if welding deformation can be measured sequentially and the displacement distribution over full-field can be measured such as the results obtained by finite element analysis, they can be valuable information. Therefore, in this study, 3-dimensional deformation (in-plane and out-of-plane deformation) measurement method is developed using a digital camera, which requires no special equipment. This method is a noncontact method and it can sequentially measure over the entire photographed image. In this study, proposed method is applied to the sequential measurement of displacement under the strong lighting levels in arc welding. To investigate the measurement precision and usefulness of the method, a 3-dimensional shape measurement system (LAT-3D) using a laser displacement gauge and digital caliper are used. Through the comparison of the results measured by these methods, quantitative validity of the proposed method is also verified.
一般社団法人日本機械学会の論文
2011-07-16