Enhancing vibration control in kinematically excited additively manufactured continuous fiber composite structures with distinct orientations

The article is primarily focused on investigating vibration control in 3D printed composite beam structures. It specifically examines the impact of Macro Fiber Composite (MFC) on two distinct composite materials: polylactic acid (PLA) with continuous carbon fiber (PLA/CCF) and PLA with continuous glass fiber (PLA/CGF) under kinematical excitation. An essential aspect of the research is that both types of composites were manufactured with two distinct layer orientations: 0°/0° and 0°/90°. The modal analysis was performed to find out inherent frequencies and amplitude spectrum for composite beam using 3D laser vibrometer. To maximize vibration damping, an optimization process was implemented to fine-tune the voltage and phase of the signal delivered to the MFC (Ḿ8507-Ṕ2) for each structure. Following this, the article identified stable and unstable phase regions for each structure and extensively explored the vibration amplitude response within these regions. The study exposes that MFC is more successful in mitigating vibration in structures with 0°/0° orientations, exhibiting significantly greater vibration suppression compared to their corresponding 0°/90° structures.