Article Dans Une Revue International Journal of Impact Engineering Année : 2025

Development of back-face coatings for the characterization of non-reflective and opaque materials by laser shocks

Résumé

The present study intends to make possible the dynamic characterization of a non-reflective and opaque material using a laser shock test which must lead to the establishment of an equation of state and a constitutive law. The instrumentation used is a back-face velocity measurement by a green laser interferometry (VISAR). In this study, a metallic coating (aluminum) is added to the back-face of the non-reflective material to be characterized (here an elastomer). The influence of the back-face coating thickness on material characterization is studied experi­mentally and numerically. The experimental results indicate that, whatever the thickness of the metal coating, it is possible to determine the equation of state of the material using a simulation model. Limitations of the pro­ posed protocol are then finally discussed to get a constitutive law at loading up to 20 GPa. The role of a probable early damaging at the back-face of the sample and improvements proposals are given through numerical analysis of the shock tests.

Fichier principal
Vignette du fichier
I2M- JIJIF-Girardot-2025.pdf (20.25 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05226574 , version 1 (27-08-2025)

Licence

Identifiants

Citer

Solenn Le Mouroux, David Lebaillif, Laurent Berthe, Philippe Viot, Jérémie Girardot. Development of back-face coatings for the characterization of non-reflective and opaque materials by laser shocks. International Journal of Impact Engineering, 2025, 203, pp.105327. ⟨10.1016/j.ijimpeng.2025.105327⟩. ⟨hal-05226574⟩
205 Consultations
90 Téléchargements

Altmetric

Partager

  • More