A three-dimensional measurement and reconstruction methodology for aeroengine blades welding repairment
Three-dimensional reconstruction of aeroengine blades has been widely recognised as a crucial step in the precise and efficient blade welding repairment. This paper presents a reconstruction and splicing methodology based on the NURBS theory. Aeroengine blade related to the structural, aerodynamic, strength, vibration, temperature and other disciplinary so that its shape is complex free-form geometry surface. The topographic point cloud denoise outliers to fit local surface by the least squares method,and segmented by curvature threshold.Taking bicubic Coons surface in the form of B-spline as the basal plane, scattered point cloud approach to non-constraint surface. According to optimization theory, control points of the Bézier surface are determined by iteration.The three-dimensional worn blade model are recovered by splicing and trimming surfaces based on NURBS, as the Ideal model for the subsequent welding repairment.
Reverse engineering Point cloud Bezier surfaces Surface reconstruction
LIU Jie LI Liangyu Yao Fulin
Advanced Mechatronics Equipment Technology Tianjin Area Laboratory, Tianjin Polytechnic University, Tianjin 300387, China
国际会议
济南
英文
1-7
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）