旋转部件在交通运输、风能发电等诸多领域具有重要作用。三维数字图像相关方法(Three-Dimensional Digital Image Correlation,3D–DIC)作为一种非接触光学测量手段,能够获取旋转部件在运转过程中的全场位移、变形及振动信息,从而为故...旋转部件在交通运输、风能发电等诸多领域具有重要作用。三维数字图像相关方法(Three-Dimensional Digital Image Correlation,3D–DIC)作为一种非接触光学测量手段,能够获取旋转部件在运转过程中的全场位移、变形及振动信息,从而为故障诊断、健康监测以及气动结构优化设计提供重要数据支撑。本文对近年来3D–DIC技术的发展与应用进行了全面综述。首先介绍了3D–DIC技术的基本原理及其针对旋转物体的变形测量系统;针对大角度旋转测量中出现的退相关问题,详细阐述了国内外学者在初值估计和形函数设计等方面所提出的改进。随后,通过若干典型应用案例,展示了该技术相较于传统变形测量手段的优势。最后,对该技术的应用前景和发展趋势进行了展望。展开更多
To detect space gravitational waves in the extremely low-frequency band,the telescope and optic-al platform require high stability and reliability.However,the cantilevered design presents challenges,espe-cially in the...To detect space gravitational waves in the extremely low-frequency band,the telescope and optic-al platform require high stability and reliability.However,the cantilevered design presents challenges,espe-cially in the glass-metal hetero-bonding process.This study focuses on the analysis and experimental re-search of the bonding layer in the integrated structure.By optimizing the structural configuration and select-ing suitable bonding processes,the reliability of the telescope system is enhanced.The research indicates that using J-133 adhesive achieves the best performance,with a bonding layer thickness of 0.30 mm and a metal substrate surface roughness of Ra 0.8.These findings significantly enhance the reliability of the optical sys-tem while minimizing potential risks.展开更多
文摘旋转部件在交通运输、风能发电等诸多领域具有重要作用。三维数字图像相关方法(Three-Dimensional Digital Image Correlation,3D–DIC)作为一种非接触光学测量手段,能够获取旋转部件在运转过程中的全场位移、变形及振动信息,从而为故障诊断、健康监测以及气动结构优化设计提供重要数据支撑。本文对近年来3D–DIC技术的发展与应用进行了全面综述。首先介绍了3D–DIC技术的基本原理及其针对旋转物体的变形测量系统;针对大角度旋转测量中出现的退相关问题,详细阐述了国内外学者在初值估计和形函数设计等方面所提出的改进。随后,通过若干典型应用案例,展示了该技术相较于传统变形测量手段的优势。最后,对该技术的应用前景和发展趋势进行了展望。
文摘To detect space gravitational waves in the extremely low-frequency band,the telescope and optic-al platform require high stability and reliability.However,the cantilevered design presents challenges,espe-cially in the glass-metal hetero-bonding process.This study focuses on the analysis and experimental re-search of the bonding layer in the integrated structure.By optimizing the structural configuration and select-ing suitable bonding processes,the reliability of the telescope system is enhanced.The research indicates that using J-133 adhesive achieves the best performance,with a bonding layer thickness of 0.30 mm and a metal substrate surface roughness of Ra 0.8.These findings significantly enhance the reliability of the optical sys-tem while minimizing potential risks.
