莫尔层析术的模型误差分析及实验研究

详细信息

Analysis and experimental research of Moire tomography error model

Dept. of Applied Physics, Nanjing University of Science & Technology, Nanjing, 210094

摘要: 分析了经典莫尔层析法的误差模型,通过讨论误差产生的机理,研究了目前使用的重建算法的适用范围。用莫尔偏折仪层析重建的实验结果与真实温度值比对,验证了误差模型的正确性。提出存在问题的本质及解决问题的方案——用相位展开法恢复有折射率场变形的波面,提取波面变形量,作为投影数据,重建相应层面的折射率场。
- 莫尔层析 /
- 重建 /
- 三维温度场
Abstract: The error model of classical Moire tomography is analyzed.The applicable range of current reconstruction method is limited through analyzing causes of the error.Reconstruction results of experimental temperature fields using classical Moire tomography are compared with real measured values to verify the error model.The key problem existing in conventional Moire tomography is analyzed and an method of wavefront retrieving based on phase unwrapping is presented.
- Moire tomography /
- reconstruction /
- three dimensional temperature field