| DOI LINK: https://doi.org/10.59879/gC79r |
| Paper ID:gC79r |
| Volume:37 |
| Issue:9 |
| Title:Effects of Delamination Shapes, Sizes, Locations, and Boundary Conditions Using Modal Analysis of Composite Structure |
| Abstract:Fiber-reinforced polymer composites offer numerous advantages over conventional materials, due to their better specific strength and stiffness. The service conditions and manufacturing process of the laminated plate are the causes of delamination which is a critical issue that needs to be addressed. Localized stress increases in and surrounding the delaminated zone if incipient delamination is not detected and stopped. This accelerated delamination process, driven by localized stress, ultimately leads to the failure of the composite structure. Therefore, it is imperative to explore the dynamic characteristics of delaminated composite structures. This study focuses on assessing the impact of delamination at various interfaces on the vibration characteristics of composite square plates composed of multiple plies. It also investigates how factors such as the shape, severity, and location of delamination affect the vibration properties of the composite plate. The modal analysis results obtained from a Finite Element (FE) model created using ABAQUS software are compared and validated against analytical and experimental findings from prior literature. Additionally, an analytical model used for finite element modeling of the composite plate is presented. The findings reveal that modal parameters of delaminated plates can serve as valuable indicators for identifying the shape, severity, and location of delamination. |
| Keywords:Delamination, Natural frequency, composite plate, free vibration |
| Authors:Nitesh Talekar, Mangesh Kotambkar, Kiran Kaware, Akshay Sontakkey |
| Paper PDF Link: View full PDF |