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Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material

Article dans une revue avec comité de lecture
Auteur
ESCAULT, Romain
118112 Institut Pprime [UPR 3346] [PPrime [Poitiers]]
BERTHE, Laurent
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BOUSTIE, Michel
473 Laboratoire de combustion et de détonique [LCD]
118112 Institut Pprime [UPR 3346] [PPrime [Poitiers]]
TOUCHARD, Fabienne
118112 Institut Pprime [UPR 3346] [PPrime [Poitiers]]
LESCOUTE, Emilien
118112 Institut Pprime [UPR 3346] [PPrime [Poitiers]]
SOLLIER, Arnaud
428 Laboratoire pour l'application des lasers de puissance [LALP]
MERCIER, Patrick
24541 Georgia Tech Lorraine [Metz]
26305 SUPELEC-Campus Metz
BERNIER, Jacky
24541 Georgia Tech Lorraine [Metz]

URI
http://hdl.handle.net/10985/8061
DOI
10.1088/0022-3727/46/23/235501
Date
2014
Journal
Journal of Physics D: Applied Physics

Résumé

The propagation of laser-induced shock waves in a transparent epoxy sample is investigated by optical shadowgraphy. The shock waves are generated by a focused laser (3 ns pulse duration—1.2 to 3.4TWcm−2) producing pressure from 44 to 98.9 GPa. It is observed that the shock wave and the release wave created by the shock reverberation at the rear face are both followed by a dark zone in the pictures. This corresponds to the creation of a tensile zone resulting from the crossing on the loading axis of the release waves coming from the edge of the impact area (2D effects). After the laser shock experiment, the residual stresses in the targets are identified and quantified through a photoelasticimetry analysis of the recovered samples. This work results in a new set of original data which can be directly used to validate numerical models implemented to reproduce the behaviour of epoxy under extreme strain rate loading. The residual stresses observed prove that the high-pressure shocks can modify the pure epoxy properties, which could have an influence on the use made of these materials.

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Documents liés

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  • Experimental and numerical investigations of shock and shear wave propagation induced by femtosecond laser irradiation in epoxy resins 
    Article dans une revue avec comité de lecture
    ECAULT, Romain; BERTHE, Laurent; TOUCHARD, Fabienne; BOUSTIE, Michel; LESCOUTE, Emilien; SOLLIER, Arnaud; VOILLAUME, Hubert (IOP Publishing, 2015)
    In this work, original shock experiments are presented. Laser-induced shock and shear wave propagations have been observed in an epoxy resin, in the case of femtosecond laser irradiation. A specific time-resolved shadowgraphy ...
  • Dynamic fragmentation of graphite under laser-driven shocks: Identification of four damage regimes 
    Article dans une revue avec comité de lecture
    SEISSON, Gabriel; PRUDHOMME, Gabriel; FRUGIER, Pierre Antoine; HÉBERT, David; LESCOUTE, Emilien; SOLLIER, Arnaud; VIDEAU, Laurent; MERCIER, Patrick; BOUSTIE, Michel; BERTHE, Laurent (Elsevier, 2016)
    This study presents the results of a large experimental campaign conducted on the Luli2000 laser facility. Thin targets of a commercial grade of porous graphite were submitted to high-power laser-driven shocks leading to ...
  • Experimental study of composite damage under LASER shock(Article) [Itude expérimentale de l'endommagement de composites sous choc LASER] 
    Article dans une revue avec comité de lecture
    GAY, Elise; BERTHE, Laurent; BOUSTIE, Michel; ARRIGONI, Michel; MERCIER, Patrick; BÉNIER, Jacky (EDP Sciences, 2012)
    In a context of rising use of composite materials in aeronautic or defense fields, the understanding of the behavior under shock and induced damage of these complex materials is a key issue developed in this study. Shock ...
  • Dynamic cratering of graphite: Experimental results and simulations 
    Article dans une revue avec comité de lecture
    HEBERT, David; BERTRON, I; CHEVALIER, J.M; HALLO, L; LESCOUTE, Emilien; VIDEAU, Laurent; COMBIS, Patrick; GUILLET, F; BERTHE, Laurent; SEISSON, G.; BOUSTIE, Michel (Elsevier, 2013)
    The cratering process in brittle materials under hypervelocity impact (HVI) is of major relevance for debris shielding in spacecraft or high-power laser applications. Amongst other materials, carbon is of particular interest ...
  • Dynamic cratering of graphite : experimental results and simulations 
    Article dans une revue avec comité de lecture
    SEISSON, G; HEBERT, David; BERTRON, I; CHEVALIER, J.M; HALLO, L; LESCOUTE, Emilien; VIDEAU, Laurent; COMBIS, Patrick; GUILLET, F; BOUSTIE, Michel; BERTHE, Laurent (Elsevier, 2013)
    The cratering process in brittle materials under hypervelocity impact (HVI) is of major relevance for debris shielding in spacecraft or high-power laser applications. Amongst other materials, carbon is of particular interest ...

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