1. Laser Shock Peening: Toward the Use of Pliable Solid Polymers for Confinement
- Author
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Yann Rouchausse, Alexandre Rondepierre, Laurent Videau, Stéphane Valadon, Bruno Fayolle, Matthieu Gervais, Corentin Le Bras, R. Seddik, Léo Morin, Romain Ecault, Laurent Berthe, Domenico Furfari, Marine Scius-Bertrand, Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Airbus Operation S.A.S., Airbus [France], Airbus Group [Germany], Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, and HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)
- Subjects
lcsh:TN1-997 ,Matériaux [Sciences de l'ingénieur] ,Materials science ,finite element method ,02 engineering and technology ,finite element method - laser shock peening - polymers - solid confinement - VISAR measurement ,solid confinement ,01 natural sciences ,Velocity interferometer system for any reflector ,VISAR measurement ,[SPI.MAT]Engineering Sciences [physics]/Materials ,law.invention ,chemistry.chemical_compound ,law ,0103 physical sciences ,Coupling (piping) ,General Materials Science ,Composite material ,lcsh:Mining engineering. Metallurgy ,polymers ,010302 applied physics ,chemistry.chemical_classification ,Acrylate ,Polydimethylsiloxane ,Metals and Alloys ,Peening ,Polymer ,021001 nanoscience & nanotechnology ,Laser ,Shock (mechanics) ,chemistry ,laser shock peening ,0210 nano-technology - Abstract
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/cm 2 , 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.
- Published
- 2019
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