Effect of low-frequency vibrations on speckle interferometry fringes

被引：5

作者：

Vikram, CS ^{[1
]}

Pechersky, MJ

机构：

[1] Univ Alabama, Ctr Appl Opt, Huntsville, AL 35899 USA

[2] Westinghouse Savannah River Co, Savannah River Technol Ctr, Aiken, SC 29802 USA

来源：

OPTICAL ENGINEERING | 1998年 / 37卷 / 05期

关键词：

speckle correlation interferometry; vibration; stress analysis; in situ applications; fringe contrast; fringe shift;

D O I：

10.1117/1.601685

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effects of low-frequency vibrations on speckle correlation fringes have been investigated. The relatively short capture time of the camera in the low-frequency case may yield usable fringe contrast in spite of vibration. It has been shown that the fringes also shift due to the vibration. The study is in agreement with experimental observations of good-contrast correlation fringes even if the object is not on a vibration-isolated table. Some such experimental observations are also presented. (C) 1998 Society of Photo-Optical Instrumentation Engineers. [S0091-3286(98)03605-8].

引用

页码：1602 / 1607

页数：6

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