Measurement of transient out-of-plane displacement gradients in plates using double-pulsed subtraction TV shearography

被引：0
|
作者：
Fernández, A
Doval, AF
Kaufmann, GH
Dávila, A
Blanco-García, J
Pérez-López, C
Fernández, JL
机构：
[1] Univ Vigo, Dept Engn Design, Escuela Tecn Super Ingn Ind, E-36200 Vigo, Spain
[2] Univ Vigo, Dept Appl Phys, Escuela Tecn Super Ingn Ind, E-36200 Vigo, Spain
[3] Univ Nacl Rosario, Inst Fis, RA-2000 Rosario, Argentina
[4] Consejo Nacl Invest Cient & Tecn, RA-2000 Rosario, Argentina
[5] Ctr Invest Opt, Leon 37000, Gto, Mexico
来源：
OPTICAL ENGINEERING | 2000年 / 39卷 / 08期
关键词：
metrology; speckle interferometry; shearography; shock;
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a technique for the measurement of transient out-of-plane displacement gradients in plane objects by double-pulsed subtraction TV shearography. The fringe patterns are automatically and quantitatively analyzed by the Fourier transform method. A novel optical setup based on the separation and further recombination of illumination beams is demonstrated for the generation of carrier fringes. The principle of the proposed technique is theoretically described, and its immunity to environmental disturbances is discussed. Experimental results obtained with a metallic plate excited by the impact of a piezoelectric transducer are presented. (C) 2000 Society of Photo-Optical instrumentation Engineers. [S0091-3286(00)02908-1].
引用
收藏
页码：2106 / 2113
页数：8
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