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Applied Optics

Applied Optics


  • Vol. 36, Iss. 10 — Apr. 1, 1997
  • pp: 2058–2065

Study of transient deformations with pulsed TV holography: application to crack detection

A. Fernández, A. J. Moore, C. Pérez-López, A. F. Doval, and J. Blanco-García  »View Author Affiliations

Applied Optics, Vol. 36, Issue 10, pp. 2058-2065 (1997)

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We report the measurement of reproducible transient deformations with single-pulsed-subtraction and double-pulsed-addition TV holography with both in-plane and out-of-plane optical configurations. An original synchronization system (controlling mechanical excitation of the object, firing the laser pulses, and image acquisition) used to obtain the subtraction and the addition correlation fringes is described. Experimental results are presented for the propagation of mechanical shock waves in a cantilever specimen and their subsequent diffraction by a crack in the specimen. These preliminary results show that the technique may be used for crack detection.

© 1997 Optical Society of America

Original Manuscript: June 27, 1996
Published: April 1, 1997

A. Fernández, A. J. Moore, C. Pérez-López, A. F. Doval, and J. Blanco-García, "Study of transient deformations with pulsed TV holography: application to crack detection," Appl. Opt. 36, 2058-2065 (1997)

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