Page 145 - tech fest 2025 ב״ש חוברת תקצירים

Stair-Climbing and Descending Wheelchair
ME-D-37
Abed Jaber Garman; jaber.shadi3.10@gmail.com
Advisor: Dr. Etan Fisher
SCE - Shamoon College of Engineering, Be’er-Sheva
Accessibility remains a significant challenge for wheelchair users, especially when confronting stairs. This project focuses on designing and developing an innovative manual wheelchair capable of ascending and descending stairs safely, using the “Tri-Star” wheel system. “SolidWorks” software was utilized to design and simulate the mechanical assembly, ensuring stability, efficiency, and user safety. Preliminary results demonstrated that the “Tri-Star” wheel configuration significantly improves maneuverability and climbing ability compared to standard wheelchairs. This manual wheelchair design promises enhanced mobility and independence for individuals with disabilities, presenting a valuable contribution towards improving quality-of-life and accessibility.
Keywords: accessibility, manual wheelchair, mobility, “SolidWorks”, stair-climbing, “Tri–Star” wheels
Characterization of the Compression Curve of a Zr-Nb Powder Mixture and Examination of the Mechanical Behavior of the Composite Material Before and After Sintering ME-D-38
Michal Eliya; michaleliya001@gmail.com Tal Evgi; talevgi2409@gmail.com
Advisors: Dr. Elad Priel1,2, Eng. David Ben Shabat1, Mr. Ariel Cohen2 1SCE - Shamoon College of Engineering, Be’er-Sheva
2NRCN – Nuclear Research Center Negev
This study examines the compaction of zirconium-niobium (Zr-Nb) powder mixtures and the effect of parameters, such as composition, particle size, and compaction pressure, on relative density and mechanical properties. The experiment involved biaxial compaction at room temperature of pure Zr, pure Nb, and various Zr-Nb mixtures. The results showed a direct correlation between compaction pressure and the relative density of the green body. Pure zirconium achieved the highest density, while the addition of niobium influenced material stiffness, but not in a clear trend. During the initial compression stages, density differences were more pronounced due to particle size and shape, but at higher pressures, all the materials exhibited similar behavior. Our findings provide deeper understanding of reactive material characterization, thus improving control of manufacturing processes.
Keywords: green body, mechanical properties, powder compaction, reactive materials, relative density, Zr-Nb alloys
Book of Abstracts | 2025
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