Laser Based Vibration Labs

该项目的主要目标是将最新的激光振动测量技术和基于pc的仪器技术引入机械振动领域的本科实验课程。本课程所介绍的实验，是一种基础性的、设计应用性质的实验。在实验中，引入了固有频率、模态振型、共振、波德图和柔性结构的空气动力诱发振动等概念。在旋翼振动实验中，学生测量了旋翼高速旋转时叶片的振动。在一个设计实验室中，学生们被要求消除安装在汽车后窗上的手机天线产生的噪音。将安装在新实验室的设备包括激光测振仪、Bentley Nevada转子套件、基于pc的实时快速傅立叶变换和示波器仪器的硬件和软件。

The principle objective of this project is to introduce new state-of-the-art laser vibrometry and PC-based instrumentation technology into the undergraduate laboratory curriculum in the area of Mechanical Vibrations. The experiments introduced into the courses are of a fundamental and design application nature. Labs are conducted in which concepts such as natural frequency, mode shapes, resonance, Bode plots, and aerodynamically induced vibrations of flexible structures are introduced. A rotor vibrations lab is introduced in which the students measure the vibration of turbine blades while the rotor is spinning at a high rate of speed. A design lab is introduced in which the students are asked to eliminate the noise produced by a cellular phone antenna mounted on the rear window of a car. The equipment to be installed in the new labs includes laser vibrometers, Bentley Nevada rotor kits, and PC-based hardware and software for real-time Fast Fourier Transform and Oscilloscope instrumentation.