The Effect of Corrosion on the Natural Frequencies of Beams Steliana Stanciu, Dorin Simoiu, Ion Crâştiu, Sorin Deac, Eduard Nicuşor Oanţâ and Liviu Bereteu ITM Web Conf., 29 (2019) 02013 Published online: 15 October 2019 DOI: 10.1051/itmconf/20192902013