Transient deformation measurement by double-pulsed-subtraction TV holography and the Fourier transform method

被引：24

作者：

Fernandez, A ^{[1
]}

Blanco-Garcia, J ^{[1
]}

Doval, AF ^{[1
]}

Bugarin, J ^{[1
]}

Dorrio, BV ^{[1
]}

Lopez, C ^{[1
]}

Alen, JM ^{[1
]}

Perez-Amor, M ^{[1
]}

Fernandez, JL ^{[1
]}

机构：

[1] Univ Vigo, Dept Fis Aplicada, Escola Tecn Super Enxenieros Ind & Minas Lagoas M, E-36200 Vigo 9, Spain

来源：

APPLIED OPTICS | 1998年 / 37卷 / 16期

关键词：

D O I：

10.1364/AO.37.003440

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the measurement of transient bending waves with double-pulsed-subtraction TV holography. The correlation fringe patterns are automatically quantitatively analyzed by the application of Fourier methods. A novel optical setup with two different object-beam optical paths is demonstrated for the generation of carrier fringes. The proposed system is highly immune to environmental disturbances because the optical setup imposes no lower limit on the time separation between laser pulses. One removes the linear phase distribution due to the spatial carrier in the spatial domain by subtracting the phase of the undeformed carrier fringes from the phase of the modulated fringes. Experimental results obtained with an aluminum plate excited by the impact of a piezoelectric translator are presented. (C) 1998 Optical Society of America.

引用

页码：3440 / 3446

页数：7

共 25 条

[1] Crack detection by TV-holography: Continuous and pulsed techniques [J].