Design and Production Engineering

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Publications

This page is dedicated to published papers by faculty staff and their assistants in the Department of Design and Production Engineering.

Paper Title Reduced order analytical modelling of micro wind turbine rotordynamics with tower shadow effects
Keywords Micro wind turbines; Vibration analysis; Gyroscopic effects; Tower shadow effects; Design parametric study
Authors Aly A. Ramzy, Adel Elsabbagh, Ashraf M. Hamed & Ahmed A. Barakat
Journal Scientific Report
Publisher Springer Nature
Volume, Issue, Pages, Year 15, 16523 (2025)
DOI https://doi.org/10.1038/s41598-025-00364-0
Summary Microscale wind turbines μWTs suffer from high levels of vibrations due to several reasons. In this study, we address the dynamics of those turbines using a simple mathematical model. Using this model, a parametric study is conducted involving two parameters: the generator’s bearing span and the position of the rotor’s centre of gravity along the rotor axis. The parametric study revealed that increasing the bearing span yields a decrease in vibrations. The presented model can thereby help designers to build μWTs with better performance and longer lifespan.

 

 

Paper Title Correlating zirconium incorporation and thermomechanical processing with the metallurgical properties of Ti-14Mn-(x)Zr alloys
Keywords β-type Ti-Alloys; Thermomechanical processing; Hot rolling; Zirconium addition effect; Microstructural evolution; EBSD; Tensile properties; Fractography; Corrosion resistance
Authors Ahmed H. Awad, Ahmed W. Abdel-Ghany, Matias Jaskari, Antti Järvenpää, Mohamed Abdel-Hady Gepreel
Journal Materials Science and Engineering: A
Publisher Elsevier
Volume, Issue, Pages, Year 935, 148356 (2025)
DOI https://doi.org/10.1016/j.msea.2025.148356
Summary This study explores the effect of adding zirconium (in the range of 0–6 wt%) and thermomechanical processing on the microstructure, mechanical properties, and corrosion resistance of Ti-14Mn-(x)Zr alloys. The results showed that the alloy initially consists of dual α+β phases, while hot rolling followed by rapid quenching in water transforms the structure into a single β-phase, enhancing both tensile strength and hardness. Electron backscatter diffraction (EBSD), a technique used in scanning electron microscopy (SEM), revealed a random texture indicative of slip-dominated deformation mechanisms. The Ti-14Mn-6Zr alloy, after hot rolling and water quenching, demonstrated the best performance, with a hardness of 403 HV, an ultimate tensile strength of 1106 MPa, and the lowest corrosion rate.