Citation: | MENG Yi-ru, LV Jin-guang, ZHENG Kai-feng, ZHAO Bai-xuan, QIN Yu-xin, CHEN Yu-peng, ZHAO Ying-ze, NIE Hai-tao, WANG Wei-biao, XU Jing-jiang, LAN Gong-pu, LIANG Jing-qiu. 3-D morphological feature measurement and reconstruction of wear particles using multi-view polarized optical coherence tomography[J]. Chinese Optics. doi: 10.37188/CO.EN-2025-0018 |
The morphological description of wear particles in lubricating oil is crucial for wear state monitoring and fault diagnosis in aero-engines. Accurately and comprehensively acquiring three-dimensional (3D) morphological data of these particles has become a key focus in wear debris analysis. Herein, we develop a novel multi-view polarization-sensitive optical coherence tomography (PS-OCT) method to achieve accurate 3D morphology detection and reconstruction of aero-engine lubricant wear particles, effectively resolving occlusion-induced information loss while enabling material-specific characterization. The particle morphology is captured by multi-view imaging, followed by filtering, sharpening, and contour recognition. The method integrates advanced registration algorithms with Poisson reconstruction to generate high-precision 3D models. This approach not only provides accurate 3D morphological reconstruction but also mitigates information loss caused by particle occlusion, ensuring model completeness. Furthermore, by collecting polarization characteristics of typical metals and their oxides in aero-engine lubricants, this work comprehensively characterizes and comparatively analyzes particle polarization properties using Stokes vectors, polarization uniformity, and cumulative phase retardation, and obtains a three-dimensional model containing polarization information. Ultimately, the proposed method enables multidimensional information acquisition for the reliable identification of abrasive particle types.
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