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The Correlation between Factor of Safety and Twist Angle in Axial Fan Blade

Author Affiliations

  • 1Department of Mechanical Engineering, Universiti Tenaga Nasional, Kajang, MALAYSIA

Res. J. Recent Sci., Volume 3, Issue (1), Pages 50-56, January,2 (2014)


These days, improving energy efficient systems is one of the most controversial and significant global focuses. However, this trend in the field of engineering researches concentrates on the optimization of the existing technologies more than implementing new ones. Meanwhile, fans are one of the potent devices to be more efficient. Improvement in fan’s efficiency can be achieved by varying the twist angle of the blade. As the variation of twist angle affects the factor of safety, the present work focuses on the stress analysis of the axial fan blade with different twist angles, by the use of finite element method. Due to this, an axial fan blade with NACA5514 airfoil that is made by Aluminum 6061-T91 will be analyzed to find the correlation between the factor of safety and the twist angle in various pressure loadings.


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