Acquisition of a Scanning Laser Vibrometer

该奖项的总体目标是购买一台Polytec PSV-200扫描激光测振仪(SLV)，并1)将其整合到研究人员现有的研究设施中，2)加强绩效指标之间以及与其他研究人员之间的新的合作研究，3)将其整合到大学机械和航空航天工程系选定的本科生和研究生课程中，以及4)使该设备可供大学其他研究人员使用。SLV通过测量从运动表面反射的激光束的频率变化来测量振动表面的速度。与加速度计的机电原理不同，SLV在具有超高光学灵敏度的全自动扫描组件中提供非接触式测量、更精细的速度分辨率、更宽的工作动态范围和更高的线性度。

9871288PaiThe overall objective of the award is to purchase a Polytec PSV-200 Scanning Laser Vibrometer (SLV) and to 1) integrate it into existing research setups of the investigators, 2) strengthen new collaborative research between the PIs, and with other researchers, 3) integrate it into selected undergraduate and graduate courses in the Department of Mechanical and Aerospace Engineering at the University, and 4) make the equipment available to other researchers at the University. An SLV measures velocities of a vibrating surface by measuring the change in frequency of a laser beam reflected from the moving surface. Physically different from the electro-mechanical principles of accelerometers, the SLV offers non-contact measurements, a finer velocity resolution, a wider operating dynamic range, and higher linearity in a fully automated scanning package with ultra-high optical sensitivity.