Laser Based Vibration Labs

该项目的主要目标是引进新的 最先进的激光测振仪和基于PC的仪器 技术纳入本科实验室课程 机械振动领域。 引入的实验 课程内容包括基础及设计应用。 实验中进行的概念，如自然频率， 模态振型、共振、波特图和空气动力学诱导 介绍了柔性结构的振动。 转子 介绍了振动实验室，学生在其中测量 当转子以一定转速旋转时涡轮机叶片的振动 高速率。 介绍了一个设计实验室， 学生被要求消除噪音产生的一个 安装在汽车后窗上的手机天线。 将安装在新实验室的设备包括激光 振动计、Bentley内华达州转子套件和基于PC的硬件 和实时快速傅立叶变换软件， 示波器仪表。

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.