Dr. Yasser Safa

Projects

• Novel approaches for investigating local corrosion and mechanical degradation of multiphasic alloys / Project leader / ongoing
• Designing smart wave guides and phononic cloaks using metamaterials / Project leader / completed
• Innovative rotor design of a new airborne wind power system / Project leader / completed
• Nonlinear Thermo-Mechanics of Surface Growth for Additive Manufacturing Applications / Project leader / completed
• Developing a Rotor Model of a Novel Lighter-Than-Air System of a Wind Power Turbine / Project leader / completed
• Testing a new method for characterization and optimization of the adhesion strength of ceramic and metallic coatings / Project leader / completed

Publications

Articles in scientific journal, peer-reviewed

• Marmet, P., Safa, Y., Prestat, M., Vucko, F., Logé, R., & Holzer, L. (2026). In situ quantification of β-phase dissolution in Ti-6Al-4V under harsh oxidative conditions. Corrosion Science, 263(113730). https://doi.org/10.1016/j.corsci.2026.113730
• Bereznykov, O. V., Safa, Y., Gabovich, A. M., Gorshkov, V. N., & Fallah, A. S. (2025). Evanescent waves in multi-resonator metamaterials : mechanisms and characteristic parameters of wave attenuation. Low Temperature Physics, 51(10), 1267–1282. https://doi.org/10.1063/10.0039429
• Mehreganian, N., Safa, Y., Boiger, G. K., Bonmarin, M., & Fallah, A. S. (2025). Dynamic response of armour steel hollow cylindrical shells to blast loading : a comparative study. Results in Engineering, 28(107258). https://doi.org/10.1016/j.rineng.2025.107258
• Yavari, A., Safa, Y., & Soleiman Fallah, A. (2023). Finite extension of accreting nonlinear elastic solid circular cylinders. Continuum Mechanics and Thermodynamics, 36(5), 1053–1069. https://doi.org/10.1007/s00161-023-01208-w
• Soleiman Fallah, A., Giannakeas, I. N., Mella, R., Wenman, M. R., Safa, Y., & Bahai, H. (2020). On the computational derivation of bond-based peridynamic stress tensor. Journal of Peridynamics and Nonlocal Modeling. https://doi.org/10.1007/s42102-020-00036-9
• Fallah, A., Ghajari, M., & Safa, Y. (2019). Computational modelling of dynamic delamination in morphing composite blades and wings. The International Journal of Multiphysics, 13(4), 393–430. https://doi.org/10.21152/1750-9548.13.4.393
• Safa, Y., & Hocker, T. (2015). A validated energy approach for the post-buckling design of micro-fabricated thin film devices. Applied Mathematical Modelling, 39(2), 483–499. https://doi.org/10.1016/j.apm.2014.05.038
• Safa, Y., Hocker, T., Prestat, M., & Evans, A. (2014). Post-buckling design of thin-film electrolytes in micro-solid oxide fuel cells. Journal of Power Sources, 250, 332–342. https://doi.org/10.1016/j.jpowsour.2013.10.125
• Evans, A., Prestat, M., Tölke, R., Schlupp, M. V. F., Gauckler, L. J., Safa, Y., Hocker, T., Courbat, J., Briand, D., de Rooij, N. F., & Courty, D. (2012). Residual stress and buckling patterns of free-standing yttria-stabilized-zirconia membranes fabricated by pulsed laser deposition. Fuel Cells, 12(4), 614–623. https://doi.org/10.1002/fuce.201200028
• Safa, Y., Flueck, M., & Rappaz, J. (2009). Numerical simulation of thermal problems coupled with magnetohydrodynamic effects in aluminium cell. Applied Mathematical Modelling, 33(3), 1479–1492. https://doi.org/10.1016/j.apm.2008.02.011
• Safa, Y., & Pfenniger, D. (2008). Equation of state and stability of the helium-hydrogen mixture at cryogenic temperature. The European Physical Journal B, 66(3), 337–352. https://doi.org/10.1140/epjb/e2008-00438-8

Books, peer-reviewed

Safa, Y. (2005). Simulation numérique des phénomènes thermiques et magnétohydrodynamiques dans une cellule de hall-héroult [Doctoral dissertation, École polytechnique fédérale de Lausanne]. https://doi.org/10.5075/epfl-thesis-3185

Book chapters, peer-reviewed

• Mehreganian, N., Safa, Y., & Boiger, G. K. (2024). Impact analysis of wind turbines subjected to ship collision and blast loading. In A. S. Fallah, H. A. Khawaja, & M. Moatamedi (Eds.), Multiphysics of Wind Turbines in Extreme Loading Conditions (pp. 101–138). Academic Press. https://doi.org/10.1016/B978-0-323-91852-7.00008-8
• Safa, Y. (2011). Helium thermodynamics, analytical model. In Helium : characteristics, compounds, and applications (pp. 191–208). Nova Science Publishers.

Written conference contributions, peer-reviewed

• Alaboz, H., Kovacs, A., Safa, Y., & Mescheder, U. (2022). Development of cost-effective automated test system for determining lifetime of gold contacts under mechanical load [Conference paper]. MikroSystemTechnik Kongress 2021 : Mikroelektronik / Mikrosystemtechnik Und Ihre Anwendungen Innovative Produkte Für Zukunftsfähige Märkte, 738–741. https://doi.org/10.21256/zhaw-27639
• Rappaz, J., Flueck, M., & Safa, Y. (2006). Influence of thermo-hydraulic fields on structural mechanics of aluminum reduction cells [Conference paper]. Light Metals 2006 : proceedings of the technical sessions presented by the TMS Aluminum Committee at the 135th TMS Annual Meeting, San Antonio, Texas, USA, March 12-16, 2006, 433–438.
• Safa, Y. (2005). Determination and influence of the ledge shape on electrical potential and fluid motion in a smelter [Conference paper]. Light Metals 2005 : Proceedings of the Technical Sessions Presend by the TMS Aluminum Committee at the 134th TMS Annual Meeting, San Francisco, California, February 13-17, 2005, 461–468.

Other publications

• Evans, A., Prestat, M., Tölke, R., Gauckler, L. J., Hocker, T., Safa, Y., Briand, D., Courbat, J., & De Rooij, N. (2012). Residual stress and buckling patterns of yttria-stabilised-zirconia thin films for micro-solid oxide fuel cell membranes [Conference paper]. In M. B. Mogensen, T. Armstrong, T. M. Gür, H. Yokokawa, & X.-D. Zhou (Eds.), Ionic and mixed conducting ceramics (Vol. 8, pp. 475–479). The Electrochemical Society. https://doi.org/10.1149/1.3701338
• Safa, Y., & Hocker, T. (2009). Numerical simulation of reactive transport phenomena in the hexis SOFC-system [Conference paper]. In S. C. Singhal & H. Yokokawa (Eds.), Solid Oxide Fuel Cells 11 (SOFC-XI) (Vol. 25, pp. 1221–1230). https://doi.org/10.1149/1.3205651
• Safa, Y. (2005). Numerical simulations of thermo-magneto-hydrodynamic phenomena. Numerical Swiss Colloquium, Zürich, 24 March 2005.

Oral conference contributions and abstracts

• Marmet, P., Holzer, L., Safa, Y., Prestat, M., Vucko, F., Logé, R., Yu, H., Gharbi, O., Turmine, M., & Vivier, V. (2025, September 8). H2O2-driven corrosion of Ti-6Al-4V implants : connection between electrochemical and microstructure characteristics. EUROCORR Book of Abstracts.
• Vucko, F., Ringot, G., Marmet, P., Safa, Y., Holzer, L., Banait, S., Perrin, L., Logé, R., & Prestat, M. (2024, September 1). Fatigue-corrosion behaviour of Ti6Al4V alloys in H2O2-containing physiological solution. EUROCORR Book of Abstracts.
• Prestat, M., Marmet, P., Safa, Y., Holzer, L., Banait, S., Perrin, L., Logé, R., Dumouchel, M., & Vucko, F. (2024, September 1). H2O2-driven corrosion of Ti6Al4V investigated by electrochemical impedance spectroscopy and quantitative microstructure analysis. EUROCORR Book of Abstracts.
• Safa, Y., & Hocker, T. (2016). Developed numerical approach of the melt-crystals phase-changing kinetics in solidification process. 11th International Conference of Multiphysics, Winterthur, 8-9 December 2016.
• Hocker, T., Safa, Y., & Meier, D. C. (2016). Kontrolliertes Kühlen von Kakaobutter und Modellierung der Kristallisation von Kakaobutter. Choco Tec 2016 - der Schokoladenkongress des Jahres, Köln, Deutschland, 6-8 December 2016.
• Safa, Y. (2015). Developed model of the phase change kinetics in cocoa butter, simulation of cooling and solidification processe. Meeting Day of Swiss Chocolate Industry “AK-Schoko Treffen”, Zurich, 2015.
• Safa, Y. (2014). A new phase mixture approach for the gas-liquid flow in shale reservoir. 2nd International Symposium on Energy Challenges and Mechanics (ECM2) Aberdeen, UK, 19-21 August 2014.
• Prestat, M. R., Evans, A., Tölke, R., Schlupp, M. V. F., Scherrer, B., Yáng, Z., Martynczuk, J., Pecho, O., Ma, H., Laffranchini, S., Bieberle-Hütter, A., Gauckler, L. J., Safa, Y., Hocker, T., Muralt, P., Yan, Y., Courbat, J., Briand, D., & de Rooij, N. F. (2012). Miniaturized free-standing SOFC membranes on silicon chips (A0704). 10th European SOFC Forum 2012, Lucerne, Switzerland, 26–29 June 2012.
• Safa, Y., & Hocker, T. (2012, April). A validated model of membrane mechanics for micro SOFC. 9th Symposium on Fuel Cell and Battery Modeling and Experimental Validation (ModVal 9), Sursee, 2.-4. April 2012.
• Safa, Y. (2011). Mathematica implementation of new simulation codes for challenging industrial applications. XIII. Berliner Mathematica-Tag, Berlin, Deutschland, 2. Dezember 2011.
• Hocker, T., Niffenegger, M., Safa, Y., & Chahine, E. (2011). Buckling-driven crack growth in elastic plate devices. 21. Symposium Simulationstechnik (ASIM 2011), Winterthur, Schweiz, 7.–9. September 2011.
• Safa, Y., & Hocker, T. (2011, March). A new model for detailed simulation of multiple transport and conversion processes in SOFC stack repeat units. 8th Symposium on Fuel Cell Modeling and Experimental Validation (ModVal8), Bonn, Germany, 8-9 March 2011.
• Schumacher, J., & Safa, Y. (2010, March). Modeling two-phase flow in the gas diffusion layer of a proton exchange membrane fuel cell. 7th Symposium on Fuel Cell Modeling and Experimental Validation, Morges, 23-24 March 2010.
• Safa, Y., & Schumacher, J. O. (2009, December). Numerical modeling of the two-phase transport in a PEM fuel cell. Proceedings of the Third European Fuel Cell Technology & Applications Conference : Presented at 3rd European Fuel Cell Technology and Applications Conference, December 15 - 18, 2009, Rome, Italy.
• Schumacher, J., & Safa, Y. (2009, March). Numerical simulation of transport phenomena in PEM fuel cells. Algoritmy 2009 - Conference on Scientific Computing, Podbanske, Slovakia, 15-20 March 2009.
• Safa, Y. (2005). Cuve de hall-héroult en thermomagnétohydrodynamique. Le 2ème Congrès National de Mathématiques Appliquées et Industrielles, Evian, France, 23-27 May 2005.
• Safa, Y. (2004). Thermal calculations of reduction cells coupled with magnetohydrodynamic effect. Workshop in Numerical Simulations for Aluminum Industry, Lausanne, 2004.

Patents and patent applications

• Safa, Yasser,

  2019.

  Appareil aéroporté pour la production d'énergie éolienne.

  Patent number CH715129 A2

  (2019-12-30)

  .

  Available from: https://worldwide.espacenet.com/patent/search?q=pn%3DCH715129A2

• Safa, Yasser,

  2018.

  Appareil aéroporté pour la production d’énergie éolienne à haute altitude.

  Patent number CH713455 A2

  (2018-08-15)

  .

  Available from: https://worldwide.espacenet.com/patent/search?q=pn%3DCH713455A2

• Safa, Yasser,

  2017.

  Appareil pour la production d’énergie éolienne grâce aux courants d’air en haute altitude.

  Patent number CH712386 A1

  (2017-10-31)

  .

  Available from: https://worldwide.espacenet.com/patent/search?q=pn%3DCH712386A1

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