THE MEASUREMENT OF SLOPE USING SHEAROGRAPHY

被引：17

作者：

TAY, CJ

CHAU, FS

SHANG, HM

SHIM, VPW

TOH, SL

机构：

[1] Department of Mechanical and Production Engineering, National University of Singapore, Singapore, 0511

来源：

OPTICS AND LASERS IN ENGINEERING | 1991年 / 14卷 / 01期

关键词：

D O I：

10.1016/0143-8166(91)90035-R

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper presents an optical method which is based on speckle-shearing interferometry for the measurement of the slope at any point of an object. The object under study is illuminated by an expanded laser beam and its image is recorded on a photographic plate placed at the image plane of an image-shearing camera. A second exposure on the photographic film is made after the light source is moved slightly. The resulting photograph yields a fringe pattern which represents lines of constant displacement gradients. Theory of the method as well as some experimental results are presented. © 1990.

引用

页码：13 / 24

页数：12

共 9 条

[1] DETERMINATION OF SLOPE AND STRAIN CONTOURS BY DOUBLE-EXPOSURE SHEARING INTERFEROMETRY [J].