MRI: Development of a High-Precision Noncontact Vibration Measurement System

这项主要研究仪器（MRI）拨款为高精度非接触式振动测量系统的开发提供资金。动力系统的快速、准确的非接触全场测量对于许多工程领域的研究和开发具有重要意义。pi将使用新的高速高分辨率数码相机和主要研究人员的新型非接触测量和图像处理技术开发高精度非接触振动测量系统。该系统的测量精度将比目前可用的基于摄像机的运动分析系统高一个数量级。该方法是利用已成功开发基于摄像机的运动分析系统的行业合作伙伴的现有系统的商用现成硬件组件，并开发和集成辅助硬件和图像处理软件，以提供先进的测量功能。这种基于相机的测量仪器有可能改变动态变形测量的方式。该系统的非接触、高精度、高速和全方位测量能力将为机械和土木结构、系统动力学、航空航天结构、动物运动、人体运动分析、计算机图形学和许多其他领域的研究开辟新的可能性。此外，该系统将是一个有价值的教育工具，在开发阶段，两名毕业生和一名本科生将积极参与，在操作阶段，该设备将被本科生和研究生用于收集和分析可变形物理系统的动力学和力学，用于他们的研究和设计项目。此外，该仪器将用于开发新方法来检测地球和空间结构系统的问题，开发减轻自然灾害对社会影响的方法，并检测对国家安全的潜在威胁。

This Major Research Instrumentation (MRI) grant provides funding for the development of a high-precision noncontact vibration measurement system. Fast and accurate noncontact full-field measurement of dynamical systems is important for research and development in many engineering fields. The PIs will develop a high-precision noncontact vibration measurement system using new high-speed high-resolution digital cameras and the principal investigators' novel noncontact measurement and image processing techniques. This system will have a measurement accuracy that is one order better than those of currently available camera-based motion analysis systems. The approach is to utilize commercial off-the-shelf hardware components of an existing system of an industry partner who has successfully developed camera-based motion analysis systems, and to develop and integrate auxiliary hardware and image processing software to provide advanced measurement capabilities. This camera-based measurement instrument has the potential to transform the way dynamic deformation measurements are performed. The noncontact, high-precision, high-speed and full-field measurement capabilities of the proposed system will open up new possibilities for research on mechanical and civil structures, system dynamics, aerospace structures, animal locomotion, human motion analysis, computer graphics, and many other areas. In addition, this system will be a valuable educational tool both in the developmental phase, where two graduates and one undergraduate will actively participate, and in the operational phase, where the equipment will be used by undergraduate and graduate students to collect and analyze dynamics and mechanics of deformable physical systems for their research and design projects. Moreover, this instrumentation will be used to develop new methods to detect problems with on-earth and in-space structural systems, develop ways to mitigate effects on society from natural hazards, and detect potential threats to national security.