孔径旋转频闪散斑照相法测量物体的固有频率  

Measurement of Resonant Frequencies of Objects by Rotating Aperture-Stroboscopic Speckle Photographic Method

作　　者：陈炳泉[1] 

机构地区：[1]苏州大学物理系,苏州215006

出　　处：《光学学报》2002年第11期1358-1361,共4页Acta Optica Sinica

摘　　要：提出了一种测量物体固有频率的新方法———孔径旋转频闪散斑照相法。该方法能方便地测量振动物体的固有频率 ,具有精度高、全场显示、条纹可见度好等优点 ,给出了理论分析和实验结果。A new experimental method for measuring resonant frequencies of objects is proposed by use of rotating aperture stroboscopic speckle photographic method. It can easily measure the resonant frequencies of objects with this method. In addition to the advantages of high precision, a better visibility of lines is provided. The theoretical analysis and experimental result are given.

关 键 词：孔径旋转 频闪散斑照相 固有频率 测量方法 振动物体 散斑图 

分 类 号：TB939[一般工业技术—计量学] O438[机械工程—测试计量技术及仪器]