Share Email Print

Optical Engineering

Investigation of fracture mechanisms in resin concrete using spatially multiplexed digital Fresnel holograms
Author(s): Pascal Picart; Boubakar Diouf; Eric Lolive; Jean-Marie Berthelot
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

A digital twin Mach-Zehnder holographic interferometer is presented and applied to the investigation of fracture mechanisms in resin concrete submitted to a three-point flexural loading. The double interferometric setup allows spatial multiplexing for a simultaneous double sensitivity measurement. The component determination is obtained from two different illumination directions giving two sensitivity vectors. The numerical reconstruction of the object is performed following the discrete Fresnel transform. We investigate the image formation by merging analogic and discrete Fourier calculations in a smooth reference plane wave scheme. We examine the complex relation between the original object and the reconstructed one and the object localization is derived. Experimental results are presented and exploited to obtain the evolution of the crack tip propagation during the test.

Paper Details

Date Published: 1 May 2004
PDF: 8 pages
Opt. Eng. 43(5) doi: 10.1117/1.1668282
Published in: Optical Engineering Volume 43, Issue 5
Show Author Affiliations
Pascal Picart, Univ du Maine (France)
Boubakar Diouf, Univ. du Maine (France)
Eric Lolive, Univ. de Bretagne Occidentale (France)
Jean-Marie Berthelot, Inst Acoustique et Mecanique (France)

© SPIE. Terms of Use
Back to Top