Development of Back-Face Coatings for the Characterization of Non-Reflective and Opaque Materials by Laser Shocks

Abstract Introduction Elastomers are widely used in defense industries as ballistic protection. Several authors [1 – 2] have demonstrated that polymers can be integrated into multilayer systems to counter ballistic impacts in the velocity range of 0.2 - 10 km/s. For example, heavy armored vehicles can be equipped with NERAa protection systems: sandwiches of 2 metal sheets and a polymer core (thermoplastic or elastomer). When a shaped charge jet impacts at a velocity of 10 km/s a NERA system, the polymeric material is loaded at high strain rates (107S-1) and high pressures (~ 20 – 30 GPa). It is essential to characterize the dynamic behavior of the elastomer to understand and model the response of these NERA systems during a hypervelocity impact. Material characterization consists of establishing an equation of state (EOS) and a constitutive law (CL) for loadings corresponding to compression shock wave propagation in the medium.

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Published
2024-09-13
DOI
https://doi.org/10.1115/hvis2024-073
Primary Topic
Laser Material Processing Techniques
Type
article
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article

Development of Back-Face Coatings for the Characterization of Non-Reflective and Opaque Materials by Laser Shocks

Philippe Viot, Benoı̂t Laurent, Laurent David, Le Mouroux Solenn et al.
Laser Material Processing Techniques
article

Development of Back-Face Coatings for the Characterization of Non-Reflective and Opaque Materials by Laser Shocks

Philippe Viot, Benoı̂t Laurent, Laurent David, Le Mouroux Solenn, Girardot Jérémie
article en

Abstract

Abstract Introduction Elastomers are widely used in defense industries as ballistic protection. Several authors [1 – 2] have demonstrated that polymers can be integrated into multilayer systems to counter ballistic impacts in the velocity range of 0.2 - 10 km/s. For example, heavy armored vehicles can be equipped with NERAa protection systems: sandwiches of 2 metal sheets and a polymer core (thermoplastic or elastomer). When a shaped charge jet impacts at a velocity of 10 km/s a NERA system, the polymeric material is loaded at high strain rates (107S-1) and high pressures (~ 20 – 30 GPa). It is essential to characterize the dynamic behavior of the elastomer to understand and model the response of these NERA systems during a hypervelocity impact. Material characterization consists of establishing an equation of state (EOS) and a constitutive law (CL) for loadings corresponding to compression shock wave propagation in the medium.

Conservatoire National des Arts et Métiers (FR), Centre National de la Recherche Scientifique (FR), Arts et Métiers (FR), Institut de Mécanique et d'Ingénierie de Bordeaux (FR), HESAM Université (FR), Institut Polytechnique de Bordeaux (FR)
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Laser Material Processing Techniques
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Development of Back-Face Coatings for the Characterization of Non-Reflective and Opaque Materials by Laser Shocks — Philippe Viot, Benoı̂t Laurent, et al. · (2024) | TGRS Research Map | TGRS