Year: 2024
Type: conference-paper
Abstract: The use of high power pulsed lasers to simulate hypervelocity impacts (HVI) was proposed several decades ago [1] and several studies were devoted to the analogy between laser-driven and real projectile cratering experiments. These studies, that were mostly focused on the crater size, suggest that laser-driven impact (LDI) is a promising tool to study the effect of very small (below 300μm) and very fast (above 30 km/s) projectiles [2]. This paper presents experimental results of laser-driven cratering experiments on aluminum and porous graphite, with a focus on momentum transfer. Analysis of this experimental data suggests that the contribution of the debris to the total momentum can be either small or significant depending on some laser parameters such as focal spot and pulse duration. Using the HVI-LDI analogy, these results suggest that the shape of the equivalent projectile has a major effect on the momentum enhancement factor. Numerical simulations are presented, and are consistent with this observation.
DOI: 10.1115/hvis2024-018
Institutions: CEA CESTA, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institut de Recherche Dupuy de Lôme, École nationale supérieure de techniques avancées Bretagne, CEA DAM Île-de-France, Institut de Physique de Rennes, Arts et Métiers, Laboratoire Procédés et Ingénierie en Mécanique et Matériaux
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4411178843