期刊
OPTICS COMMUNICATIONS
卷 480, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optcom.2020.126423
关键词
Digital speckle interference; Digital shear speckle interference; 3D deformation detection; Space carrier method
类别
资金
- National Natural Science Foundation of China [51975116, 51575099]
- Fundamental Research Funds for the Central Universities, China [GUSF-DH-D-2019088]
- Graduate Student Innovation Fund of Donghua University, China [GUSF-DH-D-2019088]
In this study, a 3D deformation measurement method based on DSPI and DSSPI was proposed, which outperforms traditional methods in optical arrangement, cost, and detection efficiency. Phase maps obtained by space carrier method provide both in-plane and out-of-plane deformation information, enabling the calculation of 3D deformation distribution through integral operation. Experimental results confirm the validity of the proposed method.
In the present study, a brief, efficient and synchronous 3D (three-dimensional) deformation measurement method based on digital speckle pattern interferometry (DSPI) and digital shear speckle interference (DSSPI) was proposed. Comparing with traditional multi-laser and multi-CCD DSPI methods, this method used a single CCD and two lasers to capture the speckle patterns from three sensitive directions simultaneously, which simplified the optical arrangement, reduced the system cost, and improved the detection efficiency effectively. Based on the proposed method, the phase maps could be obtained by space carrier method, and the phase maps included both out-of-plane deformation and in-plane strain information (vertical in-plane, horizontal inplane and out-of-plane). According to the deformation and strain information, the 3D deformation distribution could be obtained through an integral operation. In the present study, the measuring algorithm and optical arrangement were described in detail, and experiments were carried out to verify the validity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据