摘要
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 became 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.
滑油中的磨粒形貌信息对航空发动机的磨损状态检测和故障诊断至关重要,如何准确地获取滑油磨粒完整的三维形貌信息已经成为滑油磨粒分析的重点。基于以上背景,本文提出了一种基于多角度偏振敏感光学相干层析成像技术的航空发动机滑油磨粒三维形貌检测和重建方法。通过多角度成像采集磨粒的三维形貌信息,运用滤波、锐化、轮廓识别得到点云数据,随后结合多种配准算法和泊松重建方法,生成高精度滑油磨粒三维模型。在实现滑油磨粒三维形貌信息准确重建的同时解决了磨粒遮挡造成的信息丢失问题,保证了重建模型的完整性。此外,通过采集航空发动机滑油中的典型金属及其氧化物的偏振信息,结合斯托克斯矢量、偏振均匀度、累计相位延迟分析对磨粒的偏振特性进行了全面表征和对比分析,实现了对滑油磨粒的多维度信息获取,为磨粒种类识别提供了有效的方法。
基金
国家自然科学基金(No.62575282,No.62575066,No.62405317,No.62305339)
吉林省科技发展计划(No.20230201049GX)
国家重点研发计划(No.2022YFB3604702)
中国科学院青年创新促进会人才基金(No.2018254)。
作者简介
MENG Yi-ru(1998-),male,in Xing'an League,Inner Mongolia Autonomous Region.He received his bachelor's degree in engineering from Wuhan University of Technology and is currently pursuing a master's degree at the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences.His main research interests include optical coherence imaging,image processing and 3D reconstruction.E-mail:m616263zzzf@163.com;Corresponding author:LAN Gong-pu(1982-),male,born in Qiqihar,Heilongjiang.He obtained the M.S.degree from Changchun University of Science and Technology in 2008,and the Ph.D.degree from the Institute of Optics and Electronics,Chinese Academy of Sciences in 2011.From 2011 to 2017,he worked at the University of Washington,the University of Houston,and the University of Alabama at Birmingham.His current research interests include OCT and OCT-based functional imaging.E-mail:langongpu@fosu.edu.cn;Corresponding author:LIANG Jing-qiu(1962-),female,born in Changchun,Jilin.She received her Ph.D.from the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,in 2003,and is currently a researcher and professor at the Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences.She is mainly engaged in micro/nano optical structure,device and system research,infrared spectroscopy/imaging spectroscopy technology and infrared optical instrument research,micro-LED micro-display chips and their application,and visible light communication device and system research.E-mail:liangjq@ciomp.ac.cn。
