Collisional disruption of sintered glass beads targets

Abstract

Porous structure is common in asteroids and satellites of outer planets. In order to study the relation between structure of the small bodies and their thermal and collisional evolution, we prepared porous sintered targets and performed impact disruption experiments.In our previous study with low impact velocity, we found that the impact strength is higher for the targets with similar porosity but with higher compressive strength (Setoh et al. 2006). In addition, the impact strength of our targets was much lower than a previous result of high velocity impact disruption of sintered glass beads target. We carried out high velocity impact experiments by using two-stage light gas gun at ISAS. Our new result on the largest fragment mass was closer to the previous one performed with high impact velocity. We will also discuss on the impact strength defined by fragment mass distribution.