Temporal speckle pattern interferometry for vibration measurement

被引：2
|
作者：
Kauffmann, J [1 ]
Tiziani, HJ [1 ]
机构：
[1] Univ Stuttgart, Inst Tech Opt, D-70569 Stuttgart, Germany
来源：
FIFTH INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER TECHNIQUES: ADVANCES AND APPLICATIONS | 2002年 / 4827卷
关键词：
vibration; temporal speckle pattern interferometry;
D O I：
10.1117/12.468146
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The evaluation of the time dependent speckle modulation [2-3] due to optical path difference changes can be extended to vibration measurement. For a sinusoidal signal evaluation with varying frequency: from zero at its reversal point, to maximum frequency at its medium position with maximum speed. For both cases we assume a harmonic vibration. For evaluation, the distance of two adjacent zero frequency points is determined, giving half the mechanical time base, and the maximum frequency, giving the maximum mechanical speed, or, assuming a harmonic vibration, the mechanical amplitude.
引用
收藏
页码：133 / 136
页数：4
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