Chinese Optics Letters, Volume. 16, Issue 11, 111202(2018)
Measurement of out-of-plane deformation of curved objects with digital speckle pattern interferometry
Fig. 1. Geometry of DSPI system for deformation measurement.
Fig. 2. Illustration of the phase evaluation process. (a) DSPI interferogram. (b) Spectrum of an interferogram in the Fourier domain. (c) The wrapped phase difference
Fig. 3. Geometry of DSPI system for shape measurement.
Fig. 4. Experimental DSPI setup.
Fig. 5. Experiment result of out-of-plane deformation measurement for curved objects. (a) The wrapped phase difference
Fig. 6. Experiment result of deformation measurement for a cylinder surface. (a) The wrapped phase difference
Fig. 7. Experiment result of 3D shape measurement with spherical wave illumination. (a) 3D shape measurement with spherical wave illumination after compensation. (b) Comparison between the results with and without compensation in the
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Pengfei Li, Ping Cai, Jun Long, Chiyue Liu, Hao Yan. Measurement of out-of-plane deformation of curved objects with digital speckle pattern interferometry[J]. Chinese Optics Letters, 2018, 16(11): 111202
Category: Instrumentation, measurement, and metrology
Received: Jul. 17, 2018
Accepted: Sep. 29, 2018
Published Online: Nov. 11, 2018
The Author Email: Ping Cai (pcai@sjtu.edu.cn)