Title :
A rapid inspection method for Large Water Turbine Blade
Author :
Liang Xinhe ; Liang Jin ; Liu Jianwei ; Guo Cheng
Author_Institution :
Sch. of Mech. Eng., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
Aiming at rapidly inspect Blade of Large Water Turbine, a new technology based on optical measurement is proposed. The procedure is divided into three steps: firstly, industrial close-range photogrammetry technology is used to acquire 3D points on the workpiece surface; secondly, using 3 pairs point method and ICP methods to achieve spatial matching between point cloud model and CAD model; finally, an error calculation method for triangulated CAD model is proposed. New vertex directed searching methods promote measuring points attaching to triangulated surfaces of CAD model. Experiments show that the program can meet the engineering requirements. Compared with the TRITOP software, the proposed method makes significantly improvement in measurement accuracy and inspection efficiency.
Keywords :
CAD; blades; inspection; measurement; mechanical engineering computing; photogrammetry; solid modelling; turbines; ICP methods; TRITOP software; error calculation method; industrial close-range photogrammetry technology; large water turbine blade; optical measurement; point cloud model; rapid inspection method; triangulated CAD model; vertex directed searching methods; Blades; Clouds; Design automation; Inspection; Iterative closest point algorithm; Solid modeling; Three dimensional displays;
Conference_Titel :
Mechatronics and Automation (ICMA), 2010 International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-5140-1
Electronic_ISBN :
2152-7431
DOI :
10.1109/ICMA.2010.5589085
