Digital Modeling of Turbine Blades Based on Reverse Engineering Software

Turbine blades are core components of aero-engines，and their quality directly impacts the overall performance and service life of the engine. Due to their operation in high-speed，high-temperature，and high-pressure environments，turbine blades endure thermal，aerodynamic，and mechanical loads，which often lead to defects such as deformation，wear，cracking，and ablation，thereby affecting engine reliability. The lengthy production cycle and high cost of manufacturing new turbine blades make it challenging to meet engineering demands，highlighting the critical importance of rapid blade repair. In the absence of original design data，obtaining a 3D digital model is the first step in the repair process. To provide an accurate 3D model for damaged turbine blades and improve repair efficiency，this study proposes a digital modeling workflow and methodology based on reverse engineering software，including Geomagic Wrap，Geomagic Design X，and Geomagic Control. According to 3D modeling requirements，the collected point cloud data of turbine blades undergoes interactive processing，surface reconstruction，2D cross-sectional error analysis，and 3D global error analysis. The results demonstrate the feasibility of this digital modeling approach，enabling rapid digitization of turbine blades. This method offers an effective technical solution for fast blade repair，with significant application value and potential for broader adoption.