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    Öğe
    Investigation of dynamic behavior and durability of double cardan drive shafts with composite materials for high-speed vehicles
    (International Information and Engineering Technology Association, 2024) Al-Ghrairi, Ahmed; Alaiwi, Yaser; Jundi, Ahmad; Mulki, Hasan; Abushammala, Omran
    This research aims to design and analyze a Double Cardan Driveshaft for high-speed vehicles using advanced computational tools and composite materials. The study employs a comprehensive methodology that combines theoretical concepts with practical design and analysis techniques. The driveshaft is designed using SOLIDWORKS software, and numerical simulations are performed using ANSYS Workbench. Modal analysis is conducted to determine the natural frequencies and mode shapes of the driveshaft, while harmonic response analysis investigates the driveshaft’s behavior under the influence of torque at high rotational speeds. The study focuses on integrating composite materials, such as carbon fibre-reinforced polymers (Vf50%) and epoxy resin-infused fabric (biaxial), to enhance the performance and durability of the driveshaft. The numerical simulations are carried out in two stages, analysing the driveshaft made of traditional steel and then incorporating composite materials. The results demonstrate that integrating composite materials significantly improves the performance of the Double Cardan Driveshaft. The optimized design with epoxy resin-infused fabric (biaxial) exhibits a 338% increase in the safety factor and a 99.6% reduction in the damage factor compared to the traditional steel design.
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    Öğe
    Numerical Thermal and Structural Analysis for Enhanced Durability in Petroleum Pipelines Using Composite Coatings
    (Penerbit Akademia Baru, 2025) Al-Safi, Saif; Alaiwi, Yaser; Mulki, Hasan; Jundi, Ahmad; Mahmoud, Saleh; Al-Hasan, Ahmed
    This research investigates the effectiveness of composite coatings in preventing corrosion in petroleum pipelines, focusing on computational methods for thermal and structural analysis. A 3-meter section of a Basra, Iraq pipeline was selected for evaluation. The study begins by establishing a baseline with an uncoated pipeline, followed by applying composite coatings both internally and externally. Finite Element Analysis (FEA) is used to assess structural integrity under high pressure and to perform a detailed numerical heat transfer analysis over a 15-year operational period. The thermal analysis evaluates the temperature distribution and thermal stresses that contribute to coating degradation and pipeline failure. By integrating Computer-Aided Design (CAD) and Computer-Aided Engineering (CAE), this study demonstrates the critical role of advanced computational tools in modeling heat transfer phenomena and enhancing pipeline safety and durability. The findings provide actionable insights for optimizing coating technologies with a focus on thermal performance in real-world applications.