MRI: Acqusition of a Three-Dimensional Scanning Laser Vibrometer System for Research and Education

该主要研究仪器（MRI）奖支持获得三维（3D）扫描激光测振仪（SLV）系统。该仪器具有精确、自动和快速测量复杂3D结构的3D表面振动的特点。它以非接触方式获取数据，具有宽带宽、宽测量范围和高分辨率。使用这种多样化的仪器进行的研究可以分为三个主要领域：1)模型验证、设计和测试；Ii)基于振动的损伤检测和健康监测；三是可再生能源和能源收集。设备的获得将使研究人员能够共同努力，解决损伤检测和健康监测，或可再生能源和能源收集方面的挑战性问题，他们的合作将为这些多学科领域的突破创造机会。将调查各种健康监测应用程序。新的损伤检测方法将集成诸如振动、断裂力学、复合材料、超声波、激光振动测量、系统识别和信号处理等不同学科。一种新型全机械速度转换器的开发将使风能、水能和潮汐能产生与电网兼容的电力，并在低速下为车辆产生大扭矩。在关节力学、机械动力学、断裂力学、系统识别和信号处理方面的新理论，以及各种应用中的新设计，将得到发展和验证。其他研究实例涵盖了各种主题，包括涡轮叶片，柔性多体动力学，卫星，柔性机构，薄壁结构和微尺度谐振器。购置这些设备将大大改善研究基础设施，促进大学、政府实验室和工业界之间的合作研究。由于3D SLV可以直观地展示结构在不同激励下的3D振动，以一种引人入胜和直观的方式，因此非常适合从高中生到博士生的各级学生的教育目的。该设备将被纳入UMBC和其他大学的各种本科和研究生课程；测试样本和结果将被共享。在巴尔的摩地区高中生暑期项目和迈耶霍夫学者项目中，代表性不足的学生将有机会使用这些设备。这些研究成果将通过提高技术知识，造福社会和各行各业，尤其将对基础设施健康监测和能源倡议产生影响。

This Major Research Instrumentation (MRI) award supports the acquisition of a three-dimensional (3D) scanning laser vibrometer (SLV) system. This instrument features precise, automatic, and rapid measurements of 3D surface vibrations of complicated 3D structures. It acquires data in a noncontact manner with a broad bandwidth, wide measurement range, and high resolution. The research that will be pursued with this diverse instrument can be grouped into three thrust areas: i) model validation, design, and testing; ii) vibration-based damage detection and health monitoring; and iii) renewable energy and energy harvesting. Acquisition of the equipment will enable researchers to work together to address challenging problems in damage detection and health monitoring, or renewable energy and energy harvesting, and their collaboration will foster opportunities for breakthroughs in these multi-disciplinary fields. Various health monitoring applications will be investigated. New damage detection methods that integrate such diverse disciplines as vibrations, fracture mechanics, composite materials, ultrasonics, laser vibrometry, system identification, and signal processing will be developed. The development of a new all-mechanical speed converter will enable generation of grid-compatible electricity from wind, water, and tidal energy, and produce a large torque at a low speed for vehicles. New theories in joint mechanics, machine dynamics, fracture mechanics, system identification, and signal processing, as well as new designs in various applications, will be developed and validated. Other examples of research cover a diverse range of topics including turbine blades, flexible multibody dynamics, satellites, compliant mechanisms, thin-walled structures, and microscale resonators.Acquisition of the equipment will greatly improve research infrastructure and promote collaborative research among universities, government labs, and industry. Since a 3D SLV can visually demonstrate the 3D vibrations of a structure under different excitations in an engaging and intuitive fashion, it is ideally suited for educational purposes for students at all levels, from high school students to Ph.D. students. The equipment will be incorporated into various undergraduate and graduate courses at UMBC and other universities; test samples and results will be shared. Underrepresented students in such programs as a summer program for high school students in the Baltimore region and the Meyerhoff Scholars Program will have opportunities to use the equipment. The research results on a diverse range of topics will benefit society and various industries by advancing technical knowledge, and will especially impact the infrastructure health monitoring and energy initiatives.