The use of fiber-reinforced composite materials in aircraft, submarines, and spacecraft construction is on the rise. Mechanical fastening is often utilized to join these materials to other composites or metals, making the assessment of joint strength a crucial aspect. To this end, the present study examines the impact of joint geometry on the strength of pin-loaded carbon-epoxy nano clay nanocomposite laminates through both experimental and numerical simulations, produced via press molding at 1500C and tested according to ASTM standards. The study focuses on the analysis of the E/D ratio (distance from the plate's free edge to the first hole diameter) and W/D ratio (specimen width to hole diameter). The results demonstrate that the pin hole farthest from the free edge experiences the highest stress, highlighting the significance of E/D and W/D ratios in pinned composite laminate joints. The implications of this study are twofold. Firstly, it can aid in the design and optimization of composite structures by enabling engineers to predict and prevent potential failures, thereby enhancing the reliability and durability of composite structures. Secondly, the information gleaned from this research can be utilized to develop improved fastening techniques for composite materials, which could have widespread applications in various industries. The results of this study have important implications for industries involved in the production of aircraft, submarines, and spacecraft, as they can use this knowledge to enhance the safety and quality of their products. Overall, this research represents a significant contribution to the advancement of composite materials technology and its potential applications. In conclusion, the findings of this study emphasize the importance of joint geometry in determining the strength of pinned composite laminate joints. As composite materials continue to be utilized in various industries, further research in this area can aid in the development of new and improved fastening techniques that maximize joint strength and reliability. The results of this study can also provide a basis for future investigations into the mechanics of composite materials, as well as the impact of other factors such as temperature and humidity on joint strength. Ultimately, a better understanding of composite materials and their behavior can lead to safer, more efficient, and more innovative structures in a variety of fields.

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