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

该重大研究仪器（MRI）奖支持三维（3D）扫描激光测振仪（SLV）系统的收购。该仪器具有精确、自动和快速测量复杂3D结构的3D表面振动的功能。它以非接触方式采集数据，具有宽带宽、宽测量范围和高分辨率。将使用这种多样化的仪器进行的研究可以分为三个重点领域：i）模型验证，设计和测试; ii）基于振动的损伤检测和健康监测; iii）可再生能源和能源收集。购买这些设备将使研究人员能够共同努力解决损坏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。将研究各种健康监测应用。将开发新的损伤检测方法，集成振动，断裂力学，复合材料，超声波，激光测振，系统识别和信号处理等不同学科。新型全机械速度转换器的开发将使风能、水能和潮汐能发电与电网兼容，并在低速时为车辆产生大扭矩。将开发和验证关节力学，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。此外，涡轮机叶片、柔性多体动力学、人造卫星、柔性机构、薄壁结构、微型谐振器等课题也将得到广泛的应用。获得该设备将极大地改善研究基础设施，促进大学、政府实验室和产业界之间的合作研究。由于3D SLV可以直观地演示结构在不同激励下的3D振动，因此非常适合从高中生到博士的所有级别的学生的教育目的。学生这些设备将被纳入UMBC和其他大学的各种本科生和研究生课程;测试样本和结果将被共享。在巴尔的摩地区的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。关于各种主题的研究成果将通过推进技术知识而造福社会和各个行业，特别是对基础设施健康监测和能源计划产生影响。

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.