Page 135 - tech fest 2025 ב״ש חוברת תקצירים

Voice Recognition of a Drop Falling into a Pool of Water
ME-B-17
Dekel Dahan; dekel00765810@gmail.com Ofek Shai; ofekshay21@gmail.com
Advisors: Dr. Merav Arogeti1, Dr. Etan Fisher1 1SCE - Shamoon College of Engineering, Be’er-Sheva
This project investigates water drops hitting a pool of water, using impact sound recording and high- speed video analysis. By comparing these two methods, we hope to enhance our understanding of the phenomenon by developing a drop identification tool based solely on audio signals. We intend to identify different events following the impact by analyzing both their visual appearance and sound signals. Additionally, this study examines similarities and differences between events characterized by the same nondimensional numbers, such as the “Reynolds number”, but with varying physical properties. Our findings will contribute to improved measurement techniques and a deeper comprehension of drop impact dynamics.
Keywords: acoustics, drop dynamics, high-speed-imaging, impact, signal detection
Fabrication and Characterization of Zeolite Membranes
ME-B-18
Yaakov Ohauon; kobi068@gmail.com
Advisors: Dr. Polina Metalnikov1, Mr. Ariel Tordjman1 1SCE - Shamoon College of Engineering Be’er Sheva
Zeolite membranes have attracted increasing interest as promising materials for industrial separation processes, owing to their chemical stability, high selectivity, and unique porous structure. This project developed ceramic membranes based on natural clinoptilolite using a two-step approach involving cold pressing and cold sintering. Membranes were processed within a defined thermal and temporal window—the powder was compacted at room temperature under 200 MPa for 1–2 hours, followed by sintering at 400°C for 2–10 hours. This approach yielded stable green bodies without heating or chemical additives. The final fabricated membranes were crack-free, self-supporting, and exhibited submicron pores with steady water flux—demonstrating their potential use as efficient and sustainable solutions for industrial membrane separation processes.
Keywords: ceramic membrane, cold pressing, cold sintering, mechanical strength, water purification, zeolite applications
Book of Abstracts | 2025
135