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Transient bending wave analysis by Fourier evaluation of single-pulsed TV holography fringe patterns

Fernández Álvarez, Antonio; Fernández Doval, Ángel ManuelAutor UVIGO; Bugarín Diz, Javier; Vázquez Dorrío, José BenitoAutor UVIGO; López Vázquez, José CarlosAutor UVIGO; Alén de la Torre, José María; Blanco García, JesúsAutor UVIGO; Perez-Martinez Perez-Amor, Mariano JesusAutor UVIGO; Fernández Fernández, José LuisAutor UVIGO
DATE: 1997-07-04
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/1236
EDITED VERSION: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=928207
UNESCO SUBJECT: 3311.11 Instrumentos Opticos ; 2209.07 Holografía ; 2201.11 Vibraciones
DOCUMENT TYPE: conferenceObject

ABSTRACT

In this paper we demonstrate the feasibility of impact-induced transient deformations measurement by single-pulsed subtraction TV holography an the Fourier transform method with contouring fringes as spatial carrier. Fringe formation in single-pulsed subtraction TV holography and phase demodulation by the Fourier transform method are descried. Contouring fringes are proved to be well suited for introducing spatial carrier in the correlation fringe patterns. Experimental results are presented. Finally, the degree of immunity to environmental disturbances of this technique is discussed and improvements are proposed.
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