Low-frequency harmonic vibration analysis with temporal speckle pattern interferometry

被引：22
|
作者：
Li, XD [1 ]
Tao, G [1 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2002年 / 34卷 / 03期
基金：
中国国家自然科学基金;
关键词：
temporal speckle pattern interferometry; phase measurement; harmonic vibration;
D O I：
10.1016/S0030-3992(02)00013-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, the time sequence phase method (TSPM) has been applied to measure the displacement caused by low-frequency vibration in temporal speckle pattern interferometry (TSPI). The principle is that by capturing the temporal speckle patterns related to the object vibration, the whole-fluid displacement response.,, (amplitude and phase) of the vibrating object can be calculated through scanning these fluctuations. Thus, quantitative measurement can be carried out using a conventional ESPI system without a camera synchronized to the object vibration or a phase shifting system. The elaboration on the method is given and experimental results are presented. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：259 / 264
页数：6
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