International Science Community Association Research Journal of Recent Sciences 2277 - 2502 3 1 2014 January 2 The Correlation between Factor of Safety and Twist Angle in Axial Fan Blade 50 56 EN Mohammad Aghaei 1 Department of Business Management, Branch, Shahid Beheshti University (SBU), Tehran, IRAN Amin Asadollahi 2 Department of Business Management, Science and Research Branch, Islamic Azad University, Tehran, IRAN RezaSalehi Nejad 3 Master of Executive Management Business Administration, Science and research Ayatollah Amoli Branch, Amol, Mazandaran, IRAN MahdiAzar Keyvan 4 MohammadiAlamoti Mostafa 5 Mohammadreza Zare 6 Khan Hamna 1 Jinnah University for Women, 5-C, Nazimabad, PAKISTAN Iqbal Munira 2 NarmeenShawoo Bawany 3 FaisalNadeem Saher 1 Civil Engineering and Earth Resources, University Malaysia Pahang, MALAYSIA, Nasly M.A. 2 Computer System and Software Engineering, University Malaysia Pahang, MALAYSIA TutyAsmawatyBintiAbdul Kadir 3 Department of Irrigation and Drainage Malaysia, Kuala Lumpur, MALAYSIA NasehirKhanE.M. Yahaya 4 Centre for Earth Resources Research and Management, University Malaysia Pahang, MALAYSIA WanMohdFaizalWan Ishak 5 MoradyGohareh Mehdy 1 Department of Industrial Engineering, Amirkabir University of Technology,424 Hafez Avenue, 1591634311, Tehran, IRAN Shams GharnehNaser 2 Aminnayeri Majid 3 Javad Heydarzadeh 1 Department of Accounting and Management, Kashan Branch, Islamic Azad University, Kashan, IRAN Hoseyn Jabbari 2 Hasan Ghodrati 3 Akhwanzada 1 Faculty of Technology, Universiti Malaysia Pahang, Gambang, 26300, Kuantan, MALAYSIA Salman Ahmad 2 Tahar Mat 3 Razman bin 4 M. Shirani 1 Department of Soil Science, Faculty of Agriculture, Armenian National Agrarian University, Yerevan, ARMENIA Mohammadi-Ghehsareh A. 2 Department of Soil Science, Faculty of Agriculture, Islamic Azad University (Khorasgan), Isfahan, IRAN Zare Ali 1 Najafzadeh Ali 2 E. AhmadiNaeim 3 Shahizare Behzad 4 > Research Paper 2013 6 21 2014 January 2 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. Copyright@ International Science Community Association