Aly El-Shafei

Aly El-Shafei is an Egyptian academic. He is professor for Mechanical Engineering at Cairo University in Egypt. He is an expert on rotordynamics, machinery diagnostics and vibration analysis.

Bildung

El-Shafei holds a bachelor's and master's degree in mechanical engineering from Cairo University. He earned a Ph.D. from the Massachusetts Institute of Technology (M.I.T.) in mechanical engineering.

Career

From 1988 until 1990 he was assistant professor at the University of South Florida in Tampa, USA. From 1994 until 1997 he was the technical director of Ezz Group, a steel manufacturer. From 1998 until 2008 he was chairman for RITEC. From 2006 until 2008 he was assistant minister for technology development at the Ministry of Scientific Research. From 2008 until 2011 he was executive director of the Science and Technology Development Fund. From 2011 until 2014 he was chairman of the Mechanical Design and Production department at Cairo University.

El-Shafei also is a consultant to industry. He worked with companies like Assix International (USA), MTU (Germany), Mannesmann Demag (Germany), General Electric (USA), BAPETCO, SUCO and AOI (Egypt).

El-Shafei is known for his work on Squeeze Film Dampers. He is also known for his technology for the control of rotating machinery vibration and has three US patents in his name. In July 2017 El-Shafei won the Innovation Prize for Africa for his invention SEMAJIB (Smart Electro-Mechanical Actuator Journal Integrated Bearing). His invention boosts the performance of energy-generating turbines so the costs to produce power are reduced. The invention also reduces the need for regular maintenance. Siemens and General Electric (GE) both expressed interest in the invention.

He has written more than 80 papers on machinery diagnostics and rotordynamics. They were published in international journals and conferences.

Awards

• 2009: European Union's Research, Development and Innovation Programme
• 2013: Egypt's Science and Technology Development Fund
• 2017: Innovation Prize for Africa

Publications

• Hathout, JP (1996). "Adaptive control for rotor-bearing systems using hybrid squeeze film dampers". IMechE Conference Transactions. 6: 671–690.
• "Control of Rotor Vibrations Using Hybrid Squeeze Film Dampers". 1997. {{cite journal}}: Cite journal requires |journal= (help)
• Hathout, JP; El-Shafei, A.; Youssef, R. (1997). "Active control of multi-mode rotor-bearing systems using HSFDs". Journal of Tribology. 119: 49–56. doi:10.1115/1.2832479.
• "A Fast Method to Obtain the Nonlinear Response of Multi-Mode Rotors Supported on Squeeze Film Dampers Using Planar Modes: Part I—Theory". 1998. {{cite journal}}: Cite journal requires |journal= (help)
• RY, Yakoub; A, El-Shafei (1998). "A Fast Method to Obtain the Nonlinear Response of Multi-Mode Rotors Supported on Squeeze Film Dampers Using Planar Modes, Part I and Part II,' ASME Paper Nos. 98-GT-412 and 98-GT-413". {{cite journal}}: Cite journal requires |journal= (help)
• "Experimental investigation of adaptive control applied to HSFD supported rotors". 1999. {{cite journal}}: Cite journal requires |journal= (help)
• "On-off Control of HSFD supported rotors". IMechE Conference Transactions. 6: 349–360. 2000.
• "Static-couple balancing of overhung rotors". Vibrations-Willowbrook-. 17: 6–12. 2001.
• Yakoub, RY; El-Shafei, A. (2001). "The nonlinear response of multimode rotors supported on squeeze film dampers". Journal of Engineering for Gas Turbines and Power. 123 (4): 839–848. doi:10.1115/1.1370974.
• "Rotor-Dynamic Analysis of Rotating Machinery". Vibrations-Willowbrook-. 18: 6–10. 2002.
• El-Shafei, A.; Yakoub, R. Y. K. (2002). "Optimum design of squeeze film dampers supporting multiple-mode rotors". Journal of Engineering for Gas Turbines and Power. 124 (4): 992–1002. doi:10.1115/1.1479338.
• "Modeling finite squeeze film dampers". 2002. {{cite journal}}: Cite journal requires |journal= (help)
• "A finite difference model for squeeze film dampers". Journal of Engineering and Applied Science. 49: 159–174. 2002.
• "Diagnosis of Installation Problems of Turbomachinery". 2002. {{cite journal}}: Cite journal requires |journal= (help)
• El-Shafei, A. (2002). "Active control algorithms for the control of rotor vibrations using hybrid squeeze film dampers". Journal of Engineering for Gas Turbines and Power. 124 (3): 598–607. doi:10.1115/1.1421058.
• "Rotordynamic Performance of Finite Length Squeeze Film Dampers". 2003. {{cite journal}}: Cite journal requires |journal= (help)
• El-Shafei, A. (2003). "Perturbation solution for finite squeeze-film dampers executing linear motion". Tribology Letters. 14 (2): 111–121. doi:10.1023/A:1021756304514.
• "Comparison of neural network architectures for machinery fault diagnosis". 2003. {{cite journal}}: Cite journal requires |journal= (help)
• "Automated diagnostics of rotating machinery". 2003. {{cite journal}}: Cite journal requires |journal= (help)
• El-Shafei, A.; El-Kabbany, A. S.; Younan, A. A. (2004). "Rotor balancing without trial weights". Journal of Engineering for Gas Turbines and Power. 126 (3): 604. doi:10.1115/1.1762903.
• "Diagnosis of gearbox faults in the field". Vibrations in Rotating Machinery. 16: 479. 2004.
• A, El-Shafei (2006). "Supports for Controlling Rotating Machinery Vibrations". Vibrations-Willowbrook-. 22.
• El-Shafei, A.; Tawfick, S. H.; Raafat, M. S.; Aziz, G. M. (2007). "Some experiments on oil whirl and oil whip". Journal of Engineering for Gas Turbines and Power. 129: 144–153. doi:10.1115/1.2181185.
• El-Shafei, A.; Hassan, T. A. F.; Soliman, A. K.; Zeyada, Y.; Rieger, N. (2007). "Neural network and fuzzy logic diagnostics of 1x faults in rotating machinery". Journal of Engineering for Gas Turbines and Power. 129 (3): 703. doi:10.1115/1.2227417.
• Younan, AA; El-Shafei, A. (2008). "Model calibration of anisotropic rotordynamic systems with speed-dependent parameters". Journal of Engineering for Gas Turbines and Power. 130 (4): 042502. doi:10.1115/1.2770485.
• "Field Identification of Stiffness and Damping Characteristics of Fluid Film Bearings". 2008. {{cite journal}}: Cite journal requires |journal= (help)
• Ahmed, AM; El-Shafei, A. (2008). "Effect of misalignment on the characteristics of journal bearings". Journal of Engineering for Gas Turbines and Power. 130 (4): 042501. doi:10.1115/1.2800347.
• "Nonparametric Stochastic Modeling of Uncertainty in Rotordynamics". 2009. {{cite journal}}: Cite journal requires |journal= (help)
• "Experimental Investigation of the Effect of Angular Misalignment on the Instability of Plain Journal Bearings". 2009. {{cite journal}}: Cite journal requires |journal= (help)
• Murthy, Raghavendra; Mignolet, Marc P.; El-Shafei, Aly (2010). "Nonparametric stochastic modeling of uncertainty in rotordynamics—part II: applications". Journal of Engineering for Gas Turbines and Power. 132 (9): 092502. doi:10.1115/1.3204650.
• Murthy, Raghavendra; Mignolet, Marc P.; El-Shafei, Aly (2010). "Nonparametric stochastic modeling of uncertainty in rotordynamics—part i: Formulation". Journal of Engineering for Gas Turbines and Power. 132 (9): 092501. doi:10.1115/1.3204645.
• "Methods of controlling the instability in fluid film bearings". 2010. {{cite journal}}: Cite journal requires |journal= (help)
• Dimitri, AS (2010). "Instability control and unbalance compensation of flexible rotors supported on journal bearings using magnetic bearings". Proceedings of the 8th IFToMM International Conference on Rotordynamics: 12–15.
• El-Shafei, A.; Dimitri, A. S. (2010). "Controlling journal bearing instability using active magnetic bearings". Journal of Engineering for Gas Turbines and Power. 132: 012502. doi:10.1115/1.3078785.
• "Developments in Fluid Film Bearing Technology". Springer. 2011. {{cite journal}}: Cite journal requires |journal= (help)
• "Numerical and Experimental Identification of the Static Characteristics of a combined Journal-Magnetic Bearing: Smart Integrated Bearing". 2012. {{cite journal}}: Cite journal requires |journal= (help)
• "NONPARAMETRIC STOCHASTIC MODELING OF STRUCTURAL UNCERTAINTY IN ROTORDYNAMICS: UNBALANCE AND BALANCING ASPECTS". 2013. {{cite journal}}: Cite journal requires |journal= (help)
• "Oil Whip Elimination Using Fuzzy Logic Controller". 2014. {{cite journal}}: Cite journal requires |journal= (help)
• "Test Rig Characterization and Dynamic Testing of a Smart Electro-Magnetic Actuator Journal Integrated Bearing". Springer. 2015. {{cite journal}}: Cite journal requires |journal= (help)
• Dimitri, Antoine; El-Shafei, A.; Adly, A. A.; Mahfoud, J. (2015). "Magnetic Actuator Control of Oil Whip Instability in Bearings". IEEE Transactions on Magnetics. 51 (11): 2456030. Bibcode:2015ITM....5156030D. doi:10.1109/TMAG.2015.2456030.