斑点图案
光学
变形(气象学)
电子散斑干涉技术
干涉测量
平面的
平面(几何)
圆柱
材料科学
计算机科学
物理
几何学
计算机图形学(图像)
数学
复合材料
作者
Pengfei Li,Ping Cai,Jun Long,Chiyue Liu,Hao Yan
出处
期刊:Chinese Optics Letters
[Shanghai Institute of Optics and Fine Mechanics]
日期:2018-01-01
卷期号:16 (11): 111202-111202
被引量:3
标识
DOI:10.3788/col201816.111202
摘要
Digital speckle pattern interferometry (DSPI) is a high-precision deformation measurement technique for planar objects. However, for curved objects, the three-dimensional (3D) shape information is needed in order to obtain correct deformation measurement in DSPI. Thus, combined shape and deformation measurement techniques of DSPI have been proposed. However, the current techniques are either complex in setup or complicated in operation. Furthermore, the operations of some techniques are too slow for real-time measurement. In this work, we propose a DSPI technique for both 3D shape and out-of-plane deformation measurement. Compared with current techniques, the proposed technique is simple in both setup and operation and is capable of fast deformation measurement. Theoretical analysis and experiments are performed. For a cylinder surface with an arch height of 9 mm, the error of out-of-plane deformation measurement is less than 0.15 μm. The effectiveness of the proposed scheme is verified.
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