Analysis of high velocity impacts of quasibrittle material fragments with a Hopkinson bar J. M. Rodríguez-Sereno, J. Pernas-Sánchez, J.A. Artero-Guerrero and J. López Puente EPJ Web Conf., 250 (2021) 01030 Published online: 09 September 2021 DOI: 10.1051/epjconf/202125001030