MRI: Acquisition of a Scanning Laser Doppler Vibrometer System

技术说明。这笔赠款将使伊利诺伊大学芝加哥分校(UIC)能够购买一台用于研究和教育用途的扫描激光多普勒测振仪(SLDV)。SLDV实现了对大范围结构和系统的动态挠度的非接触式(远程)测量和映射。通过使用激光技术和计算机软件驱动的数据采集系统，该仪器可以在8厘米到100米的远程测量距离上，在很宽的频率范围(从一小部分赫兹到24兆赫)内测量从毫米到几十米的结构的极低水平(微米/秒)的速度。它将被研究人员和学生用来催化一系列跨越生物医学、机械和土木工程的尖端研究项目。这些措施包括：改进民用基础设施的监测和损害检测技术，包括桥梁和海上钻井和生产平台；验证车辆系统动力学的大规模计算模拟；更好地了解和改进血管、肺部和肌肉骨骼疾病的医学诊断技术；帮助开发改进的工程组织和改进的癌症早期检测；以及开发和表征新型微型执行器和生物医学植入物。意义和影响。收购SLDV将推动UIC在许多对社会重要的多学科领域的研究，从民用基础设施和运输系统安全到医疗诊断、组织工程和生物医学植入。使用SLDV的拟议研究将利用其独特的质量组合：精确度、便携性、非侵入性和进行非接触测量的能力。这些特点使其能够在许多关键应用中使用，并使其成为校准和验证由组装的多学科研究团队开创的其他成本较低的替代传感器阵列技术的理想黄金标准。在本科和研究生教学课程中广泛使用SLDV，包括动手培训，将有助于这些学生成为更好的工程师，为他们面对现实世界问题的挑战做好准备，并使他们能够在各自的技术领域进行全球竞争。UIC是美国十大最多元化的机构之一，该项目的高级人员在实验室研究中使用代表性不足的群体方面拥有一些最强的记录，包括K-12、本科生、研究生和研究生水平。

Technical Description. This grant will enable the University of Illinois at Chicago (UIC) to acquire a Scanning Laser Doppler Vibrometer (SLDV) for research and educational use. The SLDV enables noncontact (remote) measurement and mapping of the dynamic deflections of a wide-range of structures and systems. By employing laser technology and a computer software driven data acquisition system, the instrument can measure velocities at very low levels ( microns/second) over a wide frequency range (from a fraction of Hz up to 24 MHz) on structures ranging in size from millimeters to tens of meters at remote measurement distances of 8 centimeters to 100 meters. It will be used by researchers and students to catalyze a wide range of cutting edge research projects spanning biomedical, mechanical and civil engineering. These include: improved techniques for monitoring and damage detection in civil infrastructure, including bridges and offshore drilling and production platforms; validating large-scale computational simulations of vehicular system dynamics; developing a better fundamental understanding of and improved medical diagnostic techniques for vascular, pulmonary and musculoskeletal diseases; aiding in the development of improved engineered tissues and improved early detection of cancer; and developing and characterizing novel miniaturized actuators and biomedical implants.Significance & Impact. Acquiring the SLDV will advance research at UIC on numerous multidisciplinary fronts important to society, spanning from civil infrastructure and transportation system safety to medical diagnoses, tissue engineering and biomedical implants. The proposed research using the SLDV will leverage its unique combination of qualities: precision, portability, noninvasiveness, and capability for making noncontact measurements. These features enable its use in many critical applications and make it an ideal gold standard for calibration and validation of other less expensive and alternative sensor array techniques being pioneered by the assembled multidisciplinary research team. Wide use of the SLDV, including hands-on training, in undergraduate and graduate instructional courses, will help make these students better engineers, preparing them for challenges they will face with real world problems and enabling them to compete globally in their respective technical fields. UIC is one of the ten most diverse institutions in the nation, and the senior personnel on this project have some of the strongest records of engaging underrepresented groups in their laboratory research that include K-12, undergraduate, graduate and post-graduate levels.