Modal Analysis and Experimental Investigations of Fiber Metal Laminated Composite Structures
摘要
Fiber metal laminated (FML) materials are a classic material made up of metal layers bonded with laminated composites. This FML combines the stiffness and strength of composites with metallic alloys, composites play an important role in industries to reduce density, increasing the specific strength for a wide range of applications. FMLs are constructed of aluminum and E-glass fibers. Modal analysis is an approach for understanding the vibration characteristics of structure using an impact hammer model analysis technique. It helps to record the plate’s reaction after vibration. Post-processing is carried out using the ME Scope software. This study examines the vibration behavior of a five-layered FML square plate under a variety of plate boundary conditions, with each layer having a uniform thickness in the fiber metal laminated square plate. 00 orientation of fibers is considered in the FML composite plate to get vibration characteristics with different plate boundary circumstances. Using modal analysis, the natural frequencies and mode shapes are developed at various plate boundary circumstances. Such as CFCF, SSSS, and CCCC. Good agreement was found when the compare results of modal analysis testing were verified with numerical data results. The highest percentage of error occurred SSSS plate circumstance at 3.7% while the lowest is 0.6% of CFCF plate circumstance, and 0.7, 0.8, 0.9, and 0.9% percentages of error occurred at CCCC circumstance.