In Situ Analysis and Modeling of High Velocity Microparticle Impacts On Tin

Microparticle impacts achieve strain rates significantly higher than bulk-scale high-rate mechanical tests. Using the high spatial and temporal resolutions of the Laser Induced Particle Impact Test (LIPIT), these highly dynamic impacts can be studied in-situ. Previous studies have found that, upon impact, particles can produce many types of phenomena in addition to plasticity, including bonding and erosion. These phenomena have significant influence on resulting material properties and are essential to understanding material deformation under ultra-high strain rate loading conditions. This work seeks to quantify the influence of melting and ejecta produced when steel microparticles impact tin. Both phenomena can occur concurrently, and this work will deepen understanding of these mechanisms and the interplay between them.