Advances in impact resistance testing for explosion-proof electrical equipment Vlad Mihai Pasculescu, Nicolae Ioan Vlasin, Gheorghe Daniel Florea, Marius Cornel Suvar and Cosmin Ioan Colda MATEC Web Conf., 121 (2017) 11015 Published online: 09 August 2017 DOI: 10.1051/matecconf/201712111015