Laser Based Vibration Labs

基于激光的振动实验室

• 批准号: 9251227
• 负责人: Roger Quinn
• 金额: $ 8万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9251227&HistoricalAwards=false
• 关键词: Laser; Based; Vibration; Labs

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.

该项目的主要目标是将最先进的激光测振和基于PC的仪器技术引入机械振动领域的本科实验课程。课程中引入的实验具有基础性和设计性应用性质。在实验室中，介绍了柔性结构的固有频率、振型、共振、波德图和气动诱导振动等概念。介绍了一个转子振动实验室，在该实验室中，学生们测量了涡轮叶片在高速旋转时的振动。介绍了一个设计实验室，要求学生消除安装在汽车后窗上的手机天线产生的噪音。将安装在新实验室中的设备包括激光测振仪、内华达州宾利转子套件，以及用于实时快速傅立叶变换和示波器仪器的基于PC的硬件和软件。