Experimental and Numerical Study of Crack Effect on Frequency of Simple Supported Beam. Al-Khwarizmi Engineering Journal, [S. l.], v. 8, n. 2, p. 30–41, 2012. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/127.. Acesso em: 27 apr. 2024.