摘要
介绍了将显微扫描激光多普勒测振仪与基础激振法相结合的微结构动态特性的非接触无损测量方法、扫描激光多普勒测振仪的工作原理、设计的基础激振器及其驱动信号,并给出典型微结构——微悬臂梁的测量结果。测量结果与理论计算及有限元仿真结果相符,验证了该方法的有效性。
The noncontact and nondestruc-tive measurement method for microstructure dynamic properties,which combines micro scanning laser Doppler vibrometer(SLDV) with the base excitation,the working principle of SLDV,the base exciter and its drive signal are introduced.The testing results of the typical microstructure-micro cantilever beam are given.It consists with the results of the theoretical calculation and FEM which verifies the effectiveness of this method.
出处
《航空制造技术》
2008年第17期80-84,93,共6页
Aeronautical Manufacturing Technology
关键词
基础激振
动态特性
微结构
扫描激光多普勒测振仪
Base excitation Dynamic property Microstructure Scanning laser Doppler vibrometer
