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Laser shock peening: toward the tse of pliable polid polymers for confinement

Article dans une revue avec comité de lecture
Auteur
LE BRAS, Corentin
RONDEPIERRE, Alexandre
SEDDIK, Raoudha
SCIUS-BERTRAND, Marine
ROUCHAUSSE, Yann
VIDEAU, Laurent
119523 DAM Île-de-France [DAM/DIF]
GERVAIS, Matthieu
MORIN, Leo
VALADON, Stéphane
254102 Airbus Operation S.A.S.
ECAULT, Romain
254102 Airbus Operation S.A.S.
FURFARI, Domenico
242528 Airbus Group [Germany]
BERTHE, Laurent
ccFAYOLLE, Bruno
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/17950
DOI
10.3390/met9070793
Date
2019
Journal
Metals

Résumé

This paper presents the first extensive study of the performances of solid polymers used as confinement materials for laser shock applications such as laser shock peening (LSP) as opposed to the exclusively used water-confined regime up to now. The use of this new confinement approach allows the treatment of metal pieces needing fatigue behavior enhancement but located in areas which are sensitive to water. Accurate pressure determination in the polymer confinement regime was performed by coupling finite element simulation and experimental measurements of rear free-surface velocity using the velocity interferometer system for any reflector (VISAR). Pressure could reach 7.6 and 4.6 GPa for acrylate-based polymer and cross-linked polydimethylsiloxane (PDMS), respectively. At 7 and 4.7 GW/cm2, respectively, detrimental laser breakdown limited pressure for acrylate and PDMS. These results show that the pressures produced were also as high as in water confinement, attaining values allowing the treatment of all types of metals with LSP and laying the groundwork for future determination of the fatigue behavior exhibited by this type of treated materials.

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Documents liés

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  • Novel Confinement Possibility for Laser Shock: Use of Flexible Polymer Confinement at 1064 nm Wavelength 
    Article dans une revue avec comité de lecture
    LE BRAS, Corentin; RONDEPIERRE, Alexandre; AYAD, Mohammad; GERVAIS, Matthieu; VALADON, Stéphane; BERTHE, Laurent (MDPI AG, 2021)
    Through the years, laser shock peening became a treatment of choice in the aerospace industry to prolong the life of certain critical pieces. Water flow is commonly used as a confinement to improve the process capability ...
  • Laser induced plasma characterization in direct and water confined regimes: new advances in experimental studies and numerical modelling 
    Article dans une revue avec comité de lecture
    SCIUS-BERTRAND, Marine; VIDEAU, Laurent; RONDEPIERRE, Alexandre; LESCOUTE, Emilien; ROUCHAUSSE, Yann; KAUFMAN, Jan; ROSTOHAR, Danijela; BRAJER, Jan; BERTHE, Laurent (IOP Publishing, 2021)
    Optimization of the laser shock peening (LSP) and LASer Adhesion Test (LASAT) processes requires control of the laser-induced target's loading. Improvements to optical and laser technologies allow plasma characterization ...
  • Dynamical modeling of bi-layer Aluminium adhesive tape for laser shock applications 
    Article dans une revue avec comité de lecture
    AYAD, Mohammad; UNALDI, Selen; SCIUS-BERTRAND, Marine; LE BRAS, C.; ccFAYOLLE, Bruno; ccBERTHE, Laurent (Elsevier BV, 2023-03)
    The presented work covers the response of Aluminium tape (Al tape) under high strain rate of deformation (order of 106s−1) using laser shock. High power laser (J) with a short pulse duration (ns) is used to create laser ...
  • Laser interaction in a water tank configuration: Higher confinement breakdown threshold and greater generated pressures for laser shock peening 
    Article dans une revue avec comité de lecture
    RONDEPIERRE, Alexandre; ROUCHAUSSE, Yann; VIDEAU, Laurent; CASAGRANDE, Olivier; CASTELNAU, Olivier; BERTHE, Laurent (AIP Publishing LLC, 2021-10)
    The authors present a new configuration for laser-induced plasmas in confined regimes for a 10 ns-range laser pulse in the green wavelength (532 nm) that repulses the breakdown threshold above 20 GW/cm2 compared to 8 GW/cm2 ...
  • Beam size dependency of a laser-induced plasma in confined regime: Shortening of the plasma release. Influence on pressure and thermal loading 
    Article dans une revue avec comité de lecture
    RONDEPIERRE, Alexandre; ÜNALDI, Selen; ROUCHAUSSE, Yann; VIDEAU, Laurent; FABBRO, Rémy; CASAGRANDE, Olivier; SIMON-BOISSON, Christophe; BESAUCÉLE, Hervé; CASTELNAU, Olivier; BERTHE, Laurent (Elsevier, 2021)
    Processes using laser-shock applications, such as Laser Shock Peening or Laser Stripping require a deep understanding of both mechanical and thermal loading applied. We hereby present new experimental measurements of the ...

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