H. El-Hofy and J. A. McGeough "Evaluation of an Apparatus for Electrochemical Arc Wire Cutting" ASME, Journal of Engineering for Industry, V110, May 1988, 119-123.

H. El-Hofy "Shorting Phenomenon in EDM Using Electrolytic Solutions" AEJ, V28 N3, 1989, 737-752

H. El-Hofy "Computer Aided Design of Tool Shape for EC-Sinking of EC-Drilled Holes" AEJ, V 28 N3, 1989, 383-402

H. A. Youssef; H. El-Hofy and Y. El-Mehdawy "Sparking Phenomena and Hole Oversize in ECM” AEJ, V28 N4, 1989, 247-259. 5

H. El-Hofy; M. El-Makky and T. El-Wardany " Surface Generation in EEDM” AEJ, V29 N4, 1990. H. El-Hofy “Characteristics of Pulsed EC-Super finishing" AEJ, V29, N1, 1990, 83-100.

M El-Aiat and H. El-Hofy "Electrolytic Polishing of Aluminum Silicon Alloys: AEJ. V31 No 4, 1992, 511-516.

H. El-Hofy and M. El-Aiat “Electrochemical Polishing of Aluminum 6.75 Silicon Alloys” Alexandria Engineering Journal, V35 N 4, September 1996, 271-277.

H. El-Hofy and M. El-Aiat “Electrochemical Polishing of Aluminum 6.75 Silicon Alloys” AEJ, V35 N 4, September 1996, 271-277.

H. El-Hofy and M. Youness “Effect of Wire Speed and Machining Rate on Gap Phenomenon and Surface Integrity in EEDM” AEJ, V35 N 5, Nov. 1996, 289-297

M. S. Amalnik; H. El-Hofy and J. McGeough “ An intelligent Knowledge Based System For Manufacturability Evaluation of Design For Wire-EED Machining in Concurrent Engineering Environment” Journal of Materials Processing Technology, UK, 1998,155-162

H. El-Hofy “The Role of Electrolyte Flow Velocity in EEDM” Alexandria Engineering Journal, V35 N2, March 1996, 135-145

H. El-Hofy "Towards Electrochemical Machining of Dies and Molds" AEJ, V34 N2 April 1995, 185-192

H. El-Hofy “Machinability Indices for Some Non-Conventional Machining Processes" AEJ V34 N3, July 1995, 231-245

H. El-Hofy "Machinability Assessment in Electroerosion Dissolution Machining" AEJ, V 35 N 1, January, 1996, 43-49

H. El-Hofy “Characteristics of Pulse Electrochemical Machining” AEJ, V35 N1, January, 1996, 51-59.

H. El-Hofy “The Role of Electrolyte Flow Velocity in EEDM” AEJ, V35 N2, March 1996, 135-145.

El-Kady, S ; Nassef, G and El-Hofy, H “ Tool Wear Characteristics During Hot Machining” Scientific Bulletin, Ain Shams University, V 38, No 4,1998, 493-511

El-Kady, S ; El-Hofy, Hand Nassef, G “ Tribological Behavior of Ceramic and Carbide Inserts in Interrupted and Continuous Turning of Hardened high Chromium Cast iron”AEJ,, V 38 No. 1999, 59-69.

E. Soliman and H. El-Hofy “Modeling and Experimental Investigation of the Electrochemical Hole Sizing Process" AEJ, V 46 No 6, 797- 82, 27.

S. K. Elmenshawy, M. A. Younes, and H. El-Hofy“Electro Discharge Machining of AL2O3 Based Ceramic’ 5th International Conference of Asian Society for Precision Engineering and Nanotechnology V (ASPEN-5),12-15 November 2013, Taipei, Taiwan. Key Engineering Materials KEM Vol 625 (2015) pp 511-517.

Mohamed O Helmy; Hassan A. El-Hofy; and Ahmed M Fath El-Bab Elimination of clogging in PMMA microchannel using water assisted CO2 laser micromachining. 6th International Conference on Material and Manufacturing Technology, May 9-11, 2015/Bali, Indonesia, Applied Mechanics and Materials Journal Vol. 799-800 (2015) pp 407-412.

Ali Nasser, Kazunari Shinagawa, Hassan El-Hofy And Ahmed A. Moneim. Enhancing stability of Co gradient in nano-structured WC–Co functionally graded composites using graphene additives. Journal of the Ceramic Society of Japan 124 [12] 1-8 2016

Ibrahim Eldesouky, Hassan El-Hofy, “Design and prototyping of a novel low stiffness cementless hip stem”, International Journal of Biomedical Engineering and Technology (Accepted June 2017)

Ibrahim Eldesouky, Ola Harrisson, Harvey West, and Hassan El-Hofy Electron Beam Melted scaffolds for orthopedic applications" Additive Manufacturing Journal, Volume 17, October 2017, Pages 169-175.

Yassmin Seid Ahmed, Helmi Youssef, Hassan El-Hofy, Mahmoud Ahmed. Prediction and optimization of drilling parameters in drilling of AISI 304 and AISI 2205 steels with PVD monolayer and multilayer coated drills. Journal of Manufacturing and Materials Processing , 2018, 2, 16

Abdallah Abdelkawy, M Hossam, H El-Hofy. “Experimental investigation of surface and geometrical characteristics of ultrasonic assisted drilling of soda glass.” Journal of Machining Science and Technology, https://doi.org/10.1080/10910344.2018.1486422

Abdelkawy, Abdallah, Mohab Hossam, and Hassan El-Hofy. "Modelling and Optimization for Cutting Forces in Ultrasonic-Assisted Drilling of Soda Glass." Key Engineering Materials. Vol. 775. Trans Tech Publications, 2018, doi:10.4028/www.scientific.net/KEM.775.487.

Abdallah Abdelkawy, M Hossam, H El-Hofy. “Experimental Investigation of Cutting Forces and Edge Chipping in Ultrasonic-Assisted Drilling of Soda Glass” International Journal of Machine Tools & Manufacture.

30. Abdallah Abdelkawy, M Hossam, H El-Hofy. “Mathematical Model of Thrust Force for Rotary Ultrasonic Drilling of Brittle Materials Based on the Ductile-to-Brittle Transition Phenomenon” International Journal of Machine Tools & Manufacture.

Y. El-Taybany, M. Hossam, and H. El-Hofy, “Tool wear and Form Accuracy in Ultrasonic-Assisted Milling of Soda Glass”, Key of Engineering Materials, ICMSE-RAC, Alexandria, Egypt, March 11-13, 2018.

Y. El-Taybany, M. Hossam, J. Yan, and H. El-Hofy, “Surface roughness in ultrasonic-assisted and conventional milling of soda-lime glass”, Int. J. Machining and Machinability of Materials, Vol. X, No. Y, pp.82–99.

Mohamed H El-Hofy and Hassan El-Hofy ., Laser Beam Machining of CFRP Composites: A Review. The International Journal of Advanced Manufacturing Technology. DOI: 10.1007/s00170-018-2978-6

Mohamed O. Helmy, M. H. El-Hofy, and Hassan El-Hofy. "Effect of Cutting Fluid Delivery Method on Ultrasonic Assisted Edge Trimming of Multidirectional CFRP Composites at Different Machining Conditions." Procedia CIRP 68 (2018): 450-455.‏

M. El-Hofy, Helmy, M. O., Escobar-Palafox, G., Kerrigan, K. M., Scaife, R., & El-Hofy, H. (2018). Abrasive water jet machining of multidirectional CFRP laminates. In Procedia CIRP (Vol. 68, pp. 535-540).

M El-Hofy and H El-Hofy (2018) Laser beam machining of CFRP composite: A review. Journal of Advanced Manufacturing Technology, Dec 2018 Yasmine El-Taybany and Hassan El-Hofy, Mathematical model for cutting force in ultrasonic-assisted milling of soda-lime glass. Journal of Advanced Manufacturing Technology. January 2019

H. A. Youssef and H. El-Hofy "Computer Simulation Towards a Feed Function for EC-Broaching of Electrolytically Drilled Holes" CAPE-2 Conference, Edinburgh, 1987, 371-375

H. A. Youssef and H. El-Hofy "A Combined Electrochemical Sinking Broaching Process" 6th Conference on Production Engineering (PE-8), Tokyo 1987, 658-660.

A. B. Khayry and H. El-Hofy. “Aspects of Stainless Steel Die Sinking by EEDM" NAMRC-XVIII, 1990, 237-243.

T. El-Wardany and H. El-Hofy "Stochastic Analysis of Grinding Wheel Loading" Alexandria Engineering Journal (CAPE-6) Conf. London, 1990, 451-459

T. El-Wardany and H. El-Hofy "Towards an On-line Evaluation and Control of Grinding Wheel Loading Phenomenon" CAPE--6 Conf London 1990, 460-465

H. El-Hofy and A. Khayry ".A Comparative Study on Produced Geometry and Surface Integrity by Electrochemical Machining, Electro discharge Machining and Electro erosion Dissolution Machining" IEMS-5 Conference, University of Central Florida, March 1995.

M. S. Amalnik; H. El-Hofy and J. McGeough “An intelligent Knowledge Based System for Manufacturability Evaluation of Design for Electro discharge Texturing” MATADOR Conference, Manchester, UK, July 1997, 418-424

J. McGeough, H. El-Hofy, H, A. DeSilva and A. Khayry “Computer-aided Design and Manufacture for Unconventional Machining” Keynote Paper, 14th International Conference on Computer Aided Production Engineering, Tokyo, 1998.

H. El-Hofy and M.Youness “Improving the Accuracy of Electrochemical Machining of Dies and Molds” CAPE-16 Edinburgh U K, 2000, 133-146 Z.

Sadollah andH. El-Hofy, H. (2002), Orbital Electrochemical Machining of Electro-discharge Machined Surfaces, AMST ’02 Conference, Udine, Italy, June 2002, 457-464

H. El-Hofy, N. Al-Salem and M. Youness (2003),Orbital Electrochemical Finishing of Holes Using Stationary Tools, CAPE-18 Conference,18-19 March, 2003, Edinburgh , UK, 169-177

M. El-Meleegy, M. Youness and H. El-Hofy “Some Quality Aspects of Micro-drilling Using CO2 Pulsed Laser” Presented in ISEM-IV Conference, Edinburgh, April 2004

H. El-Hofy “Technological Advances in Hybrid Electrochemical Machining” 8th conference on Theoretical and Applied Mechanics, ASRT, Cairo, April, 2005 E.

Soliman and H. El-Hofy " Electrochemical Sizing of Through Holes" International Conference on Advances in Manufacturing and Technology Management ICAMTM, Bombay, India, January 18-20, 2007

A El-Safi, H. El-Hofy, M. Ahmed and H. Youssef, “Economic and Environmental impacts of Nontraditional Machining” Cape Conference, Edinburgh. 2011

Eldesouky, O. Abdelaal, H. El-Hofy, “Femoral Hip Stem with Additively Manufactured Cellular Structures”, IEEE Conference on Biomedical Engineering and Sciences, Miri, Sarawak, Malaysia, December 2014. 30.

Alaa A. Olleak and Hassan A. El-Hofy “Prediction of Cutting Forces in High Speed Machining of Ti6Al4V using SPH Method” 10th ASME Manufacturing Science and Engineering Conference, North Carolina, June 2015.

Alaa A. Olleak, Hassan El-Hofy, SPH modeling of cutting forces while face turning of Ti6Al4V alloy, 10th European LS-DYNA Conference from 15 - 17 June 2015 in Würzburg, Germany.

A. A. Olleak, M. N.A. Nasr, H. El-Hofy, The Influence of Johnson-Cook parameters on SPH modeling of Orthogonal Cutting of AISI 316L, 10th European LS-DYNA Conference from 15 - 17 June 2015 in Würzburg, Germany

Mohamed O Helmy; Hassan A. El-Hofy; and Ahmed M Fath El-Bab” Multi-objective optimization for CO2 laser micromachining of PMMA using Taguchi based grey relational analysis" CAPE-23 Conference, Edinburgh UK, Nov 2015. 20.

Ibrahim Eldesouky, and Hassan El-Hofy “ Rapid prototyping of a new low stiffness hip stem design” CAPE-23 Conference, Edinburgh UK, 3-4 November 2015.

Yasmine El-Taybany , Mohab Hossam , and Hassan El-Hofy. Ultrasonic-Assisted Milling of Hard-to-Cut Materials: Development and a Framework for Further Investigations, Materials Science Forum Vol. 887, pp 49-56

Abdlallah Abdelkawy, Mohab Hossam, Hassan El-Hofy, Modelling of Ultrasonic-Assisted Drilling: A Review. 2016 International Conference on Machining, Materials and Mechanical Technologies (2016 IC3MT) 7-11 October 2016

Yasmine El-Taybany, Mohab Hossam, and Hassan El-Hofy, Experimental Investigation of Ultrasonic-Assisted Milling of Soda Glass Using Factorial Design of Experiments, 16th CIRP Conference on Modeling of Machining Operations, Cluny, France on June 15-16, 2017, http://www.cirp-cmmo2017.com

Mohamed Osama Mohamed Helmy, M. H. El-Hofy and Hassan El-Hofy. “Experimental Investigation of Bouncing-Back of Multidirectional CFRP Laminates during Ultrasonic Assisted Edge Trimming” 6th International Conference on Engineering and Innovative Materials (ICEIM 2017), which will be held in Setagaya Campus, Kokushikan University, Tokyo, Japan during September 3-5, 2017.

Abdallah Abdelkawy, Mohab Hossam and Prof. Hassan El-Hofy. Machinability Assessment of Soda Lime Glass in Ultrasonic-Assisted Drilling, the 7th International Conference on Manufacturing Engineering and Process, (ICMEP 2018), Barcelona, Spain, 5-7 February, 2018

Abdallah Abdelkawy, Mohab Hossam, and Hassan El-Hofy, Modelling and Optimization for Cutting Forces in Ultrasonic-Assisted Drilling of Soda Glass, the 8th international Conference on Key Engineering Materials, (ICKEM 2018) March 16-19, 2018, Osaka, Japan. 25.

Mohamed Yassin, Mohab Hossam and Hassan El-Hofy Applications and Designs of Vibration-Assisted Machining Devices. The 8th international Conference on Key Engineering Materials, (ICKEM 2018), March 16-19, 2018, Osaka, Japan. Josek Nyaboro,

Mahmoud Ahmed, and Hassan El-Hofy (2018). Numerical and experimental characteristization of kerf formation in abrasive waterjet machining, Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition IMECE 2018, Pittsburgh, November 2018

N/A

N/A

A. F. Rashed; H.A. Youssef and H. El-Hofy "Effect of Some Process Parameters on the Side Machining During Electrolytic Sinking" PEDAC-3 Conf., Alexandria, 1986, 733-746

S. M. Soliman; H. A. Youssef and H. El-Hofy "A Study of the Side Machining in Electrolytic Sinking” PEDAC-3 Con. Alexandria, 1986, 717-732

H. El-Hofy and M. Y. El-Makky "Towards Better Surface Quality in EDM” PEDD-3 Conference. Ain-Shams University, 1990.

H. El-Hofy and McGeough. "Effect of Pulse Duty Cycle on Stock Removal Rate and Accuracy in EDM" PEDAC-4 Conference, Alexandria, 1989, 355-361.

H. El-Hofy "Economic Analysis of Electro erosion Dissolution Machining." PEDAC-5 Conference, Alexandria, Dec., 1992, 473-487

H. El-Hofy “Electroerosion Dissolution Machining of Graphite, Inco 901, 2017-Al. and Steel” PEDAC- Conference, Alexandria, Dec., 1992, 489-501

H. El-Hofy; A. De Silva and J. McGeough “Technological Advances in Electro discharge Machining” Keynote Paper, PEDAC-6 Conference, Alexandria, February, 1997, 941-954

H. El-Hofy and A. De Silva “Monitoring Ignition Delay Time For On-line Control of Electro erosion Dissolution Machining” PEDAC-6 Conference, Alexandria, February, 1997, 469-478.

H. El-Hofy "Surface Generation in Non-Conventional Machining." MDP-6 Conf., Cairo, January 1996, 203-213

E Soliman and H. El-Hofy “Computer Simulation of Electrochemical Sizing” PEDAC-2001 Conference, Alexandria, 1111-1121

N Al-Salem, H. El-Hofy and M. Youness “ Orbital Electrochemical Hole Finishing Using Feeding Tools” 7th Al-Azhar Engineering Conference (AEIC), Cairo, April 2003

I. Bayoumi, H. Youssef, and H. El-Hofy “Electrolytic Hardening-1” PEDAC-9 Conference, Alexandria, Egypt, February 2009

I. Bayoumi, H. El-Hofy, and H. Youssef “Electrolytic Hardening-2” PEDAC-9 Conference, Alexandria, Egypt, February, 2009

Graduate level

-IEM 645 Nontraditional machining Processes

-IEM 543 Advanced Manufacturing Processes

-IEM 644 Rapid Prototyping and Product Development

Under graduate level:

-IME 211 Introduction to Manufacturing Processes

Attending all seminars organized by E-JUST

Published 6 International books in machining and manufacturing technologies betweeen 2005-2018