Shape measurement method based on in-plane displacement measurement and rigid body rotation

被引：0
|
作者：
机构：
[1] School of Civil Engineering, Southeast University
来源：
Yang, F. (yang-fj@seu.edu.cn) | 1600年 / Southeast University卷 / 43期
关键词：
Digital image correlation; Electronic speckle pattern interferometry; In-plane displacement; Rotation; Shape;
D O I：
10.3969/j.issn.1001-0505.2013.06.013
中图分类号：
学科分类号：
摘要：
A novel method based on in-plane displacement measurement and rigid body rotation was developed to measure the 3D shape of an object conveniently. The stepping motor connected with a computer was used to rotate the specimen with high precision. The in-plane displacements were measured by the electronic speckle pattern interferometry (ESPI) method and the digital image correlation (DIC) method, respectively. The relative depths of points on the object's surface were calculated according to the displacements, and then the 3D shape of the object can be obtained. A cylinder with chamfered edges was measured by the proposed method. And the measurement results were in good agreement with the data obtained by the venire caliper. The experimental results show that the maximum difference by the ESPI method is less than 1.20% and that by the DIC method is less than 1.75%, proving the method's availability and reliability.
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页码：1203 / 1207
页数：4
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