航空学报2025，Vol.46Issue(17)：45-58,14.DOI:10.7527/S1000-6893.2025.31617
基于双目散斑的3D-PSP技术及其在压气机叶栅中的应用
Binocular speckle-based 3D-PSP technique and its applications in compressor cascade
摘要
Abstract
Reconstruction of 3D pressure is crucial for Pressure-Sensitive Paint(PSP)measurements.We propose a method for three-dimensional pressure reconstruction combining binocular digital image correlation technology.The PSP measurement results are mapped to the reconstructed three-dimensional point cloud pixel by pixel to realize the three-dimensional pressure reconstruction without relying on the geometric parameters of the measured model.The method involves creating random speckle patterns on the PSP coating surface and using two cameras to synchro-nously capture PSP images.By integrating cross-correlation analysis and the principles of binocular stereo vision in PSP data processing,we achieve precise reconstruction of the 3D pressure on the measured surface.This method has been successfully applied to the 3D pressure measurement on the surface of a compressor cascade,and a com-parative analysis with pressure tap data has shown that the relative deviation of the PSP data is within 1.2%.Further-more,the accuracy of the measurement results has been verified by comparing the reconstructed 3D point cloud with a CAD model,with an average deviation of 0.17 mm.关键词
压力敏感涂料/数字图像相关/双目立体视觉/散斑/三维压力重构Key words
pressure-sensitive paint/digital image correlation/binocular stereo vision/speckle/three-dimensional pressure reconstruction分类
航空航天引用本文复制引用
高丽敏,张峻,欧阳波,王磊..基于双目散斑的3D-PSP技术及其在压气机叶栅中的应用[J].航空学报,2025,46(17):45-58,14.基金项目
国家自然科学基金(92152301) （92152301）
国家科技重大专项(J2019-Ⅱ-0016-0037) National Natural Science Foundation of China(92152301) （J2019-Ⅱ-0016-0037）
National Science and Technology Major Project of China(J2019-Ⅱ-0016-0037) （J2019-Ⅱ-0016-0037）
