Crack Analysis of Composite Beam Using Vibration Analysis Method

This study is an examination of the impacts of crack on the dynamical properties of a cantilever composite bar, made of graphite fiber fortified polyamide. The analysis is done using finite element and the component mode synthesis techniques are utilized to prototype the model. The cantilever composite bar is divided into a few segments from the crack areas. Stiffness diminishes because of cracks as derived from the crack mechanics hypothesis as the inverse of the compliance matrix determined with the legitimate stress intensity factors and strain energy discharge rate expressions. The impacts of the area and depth of the cracks, and the volume fraction and direction of the fiber on the natural frequencies and mode states of the bar with transverse non-spreading open cracks, are investigated. The conclusions of the examination are that the current strategy is sufficient for the vibration investigation of cracked cantilever composite bars, and by utilizing the drop in the natural frequencies and the change in the mode shapes, the presence and nature of cracks in a design can be distinguished.