Micro Deformation Measurement Using Temporal Phase-Shifting and Spatial-Carrier Digital Speckle Pattern Interferometry Beijing Information Science and Technology University

Format:

Conference/Event

Author/Creator:

Wu, Wu, author.

Contributor:

Fang, Yao

Gao, Xinya

Jiang, Yanpeng

Lv, Yong

Zhou, Aiguo

Conference Name:

SAE 2016 World Congress and Exhibition (2016-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractTemporal phase-shifting and spatial-carrier techniques are the two dominant phase extraction methods used in digital speckle pattern interferometry (DSPI). Temporal phase-shifting technique enjoys the advantages of precise phase extraction and capability of high-quality phase map formation, but suffers from the limitation in its use in dynamic measurement due to the time cost for carrying out the phase shift. To meet the rising demand of dynamic measurement of deformations in modern industry, spatial-carrier technique is developed to extract the phase information from a single speckle interferogram, yielding less time cost during a test. In this paper, both temporal phase-shifting and spatial-carrier techniques are investigated in theory as well as experiment. The experiment results from measuring a same deformation behavior using both techniques are used to compare the performances of the two phase extraction techniques. The results support the conclusion that the DSPI with the spatial-carrier technique can also be used to measure deformations precisely, although its phase maps are of less quality in comparison to those obtained by the DSPI with the temporal phase-shifting technique

Notes:

Vendor supplied data

Publisher Number:

2016-01-0415

Access Restriction:

Restricted for use by site license