A polarized digital shearing speckle pattern interferometry system based on temporal wavelet transformation.
Rev Sci Instrum
; 86(9): 093102, 2015 Sep.
Article
en En
| MEDLINE
| ID: mdl-26429424
ABSTRACT
Digital shearing speckle pattern interferometry (DSSPI) has been recognized as a practical tool in testing strain. The DSSPI system which is based on temporal analysis is attractive because of its ability to measure strain dynamically. In this paper, such a DSSPI system with Wollaston prism has been built. The principles and system arrangement are described and the preliminary experimental result of the displacement-derivative test of an aluminum plate is shown with the wavelet transformation method and the Fourier transformation method. The simulations have been conducted with the finite element method. The comparison of the results shows that quantitative measurement of displacement-derivative has been realized.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Rev Sci Instrum
Año:
2015
Tipo del documento:
Article
País de afiliación:
China