Part of #Effect of Delamination Size and Location on Natural Frequency ofLaminated Composite Beams Using Finite Element Method# :
Publishing year : 2013
Conference : Biennial International Conference on Experimental Solids Mechanics
Number of pages : 6
Abstract: Detection of delamination in laminated composite structures is a great deal of interest to engineers from a reliable point of view. Vibration-based methods that investigate changes in the structure due to damage are very promising in this regard. Therefore, a procedure based on natural frequency is developed in this study to detect the presence of delamination in laminated composite beams and then to specify the size and location of the delamination. In fact, the modeling of delaminated composite beams with different sizes and locations of delaminations is modeled in Commercial finite element software, ABAQUS, and natural frequencies are extracted from the modal analysis. The numerical results are validated by analytical and experimental results available in the literature. Finally, a database is generated for different sizes and locations of delamination in laminated beams versus natural frequency. An engineer can predict the frequency behavior of a delaminated beam by changing the size and location of delamination.