Study on Fabrication of 3D Modeling by Photo-Hardening Process based on 3D Shape Measurement Data

本研究的目的是建立三维树脂造型和光固化树脂实体造型的非接触式三维面形测量方法。提出了两种表面轮廓测量方法，即调频激光显微摄影和一步相移的光栅投影法。由于这些方法具有测量速度快、灵敏度高的特点，因此非常适合于三维树脂建模，并成功地分析了光固化树脂的固化过程。本文采用了两种方法进行分析。一种是用CT方法测量折射率分布。另一种是用相移法测量双折射分布，分析硬化过程中产生的残余应力。利用该方法确定了光固化的最佳工艺条件，成功地实现了三维树脂造型的非接触式三维形状测量和光固化树脂实体造型，为反求工程提供了良好的效果

The purpose of this research is to establish the 3D shape measurement without contact for the 3D resin modeling and solid modeling by photo-hardening resin.Two methods of surface profile measurement such as the moiretopography using frequency modulation and the grating projection method by one-step phase shifting are proposed. As these methods have high speed measurement and high sensitivity, they are very useful for 3D resin modeling.Moreover this research work is succeed to analyze the hardening process in photo-hardening resin. Two method are applied for this analysis. One is the refractive index distribution measurement by CT method. The other is the birefringence distribution measurement by phase shifting technique to analyze the residual stress occurred in the hardening process. By these method, the optimum condition for the photo-hardening process is determined.The 3D shape measurement without contact for 3D resin modeling and solid modeling by photo-hardening resin are succeed This project has gotten excellent result for the reverse engineering