Free vibration characteristics of the FRP composite plate printed by 3D-printer

Abstract

Free vibration characteristics of the FRP plate printed by 3D-printer is studied in this paper. A square FRP composite plate is printed by a 3D-printer, the Mark-Forged Mark Two printer. The vibration characteristics are measured by impulse vibration test and acoustic vibration test. Experimental modal analysis detects the natural frequencies, modal dumping ratios and natural mode shapes. The time averaged digital holography interference method visualizes the vibration modes of the plate with different fiber direction angle against boundary condition. The numerical analysis is also carried out by using a commercial FEA software, ANSYS, to study the vibration mode shapes obtained by vibration test.