You are invited to our next Physics and Astronomy Colloquia event taking place on Tuesday, September 13, from 12:10 - 1 PM in CNS 206/208. At this seminar, we will be joined remotely by Dr. Cacey Bester from Swarthmore College. Pizza lunch provided!
Presenter: Dr. Cacey Bester from Swarthmore College
Title: Impact into granular media; a collisional process
Abstract: Examples of granular materials exist in abundance, from rice and cereal to sand and rocks. These particulate systems seem simple; they consist of dry, rigid grains interacting by contact forces. However, granular materials present complexities that are not well-understood, such as disordered force networks that transmit forces among grains and flow behavior that can readily change between solid-like rigidity and fluid-like flow. Impact of a granular target by a solid projectile illustrates both of these aspects. In this talk I will discuss impact experiments in which we use high-speed video photography to probe the unique features of a granular medium.
