Comparative structural vibration analysis of machinery and GFRP with Al7075 K. Vinoth Kumar, T. G. Loganathan, A. Bharath, B. Shyam Sundar and K. K. Abishek MATEC Web Conf., 144 (2018) 01009 Published online: 09 January 2018 DOI: 10.1051/matecconf/201814401009