Experimental investigation on free vibration of foam-core sandwich plate with and without circular polymer columns

• Main Authors: Abdi, Behzad, Azwan, Syed, Ayob, Amran, Abdul Rahman, Roslan, Abdullah, R. A.
• Format: Article
• Published: Trans Tech Publications, Switzerland 2014
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://eprints.utm.my/id/eprint/52802/; https://dx.doi.org/10.4028/www.scientific.net/AMR.845.297

Free vibration modes of foam-core sandwich plates with and without polymer columns were experimentally identified from frequency response tests. The responses were made at selected locations on the plate surface by attaching a single-axis accelerometer to measure out-of-plane response. Resonant frequencies, relative damping ratios and mode shapes were established for the lowest 3 out-of-plane modes found in the frequency range of 0-900 Hz. The results show that the vibration characteristics were affected by the sandwich structure configuration and material properties.