摘要
本文将旋转孔径散斑照相法和时间平均散斑照相法相结合,提出了适合于研究振动模式、测定试件固有频率的新方法,该法具有精度高、非接触测量、全场显示,防震要求低等特点,文中给出了理论分析和实验证明。
In this paper, we have combined rotating aperture method of speckle photography with time-averaged speckle photography to propose a new technique which is suitable for modal analysing and natural frequency detecting. The technique possesses advantages of high precision, non-contact measurement, whole-field displying, low demand for quake-proof, etc.. Theoretical analysis and experimental demonstration are presented.
出处
《力学学报》
EI
CSCD
北大核心
1989年第4期488-494,共7页
Chinese Journal of Theoretical and Applied Mechanics
关键词
散斑法
固有频率
激光测试
振动
Rotating aperture method of speckle photography, Time-averaged speckle photography, Natural frequency, Whole-field analysis.
