A projected-fringe fiber-based moiré interferometer is proposed to measure the local amplitude vibration of a diffuse surface. The technique is based on an optical fiber interferometer which projects interference fringes on the object surface. The visibility of these carrier fringes is modulated by a function of local amplitude vibration. Full-field quantitative analysis is performed by analyzing the fringe pattern with a 2-D Fourier transform method. Theoretical details, and experimental results are presented.

SCHIRRIPA SPAGNOLO G, AMBROSINI D, & PAOLETTI D (1998). Measurement of vibration amplitude by an optical fiber-based moiré interferometer. OPTICS AND LASERS IN ENGINEERING, 30, 213-223 [10.1016/S0143-8166(98)00017-7].

Measurement of vibration amplitude by an optical fiber-based moiré interferometer

SCHIRRIPA SPAGNOLO, Giuseppe;
1998

Abstract

A projected-fringe fiber-based moiré interferometer is proposed to measure the local amplitude vibration of a diffuse surface. The technique is based on an optical fiber interferometer which projects interference fringes on the object surface. The visibility of these carrier fringes is modulated by a function of local amplitude vibration. Full-field quantitative analysis is performed by analyzing the fringe pattern with a 2-D Fourier transform method. Theoretical details, and experimental results are presented.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/147665
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