Waves are endowed with the special and intriguing property of time reversal (TR). The experimental proof of TR involves transmitting waves into a medium, measuring and recording the response, time reversing the recorded response, re-transmitting it into the medium, and observing the waves retrace their original path. The TR of waves transformed the practice of fields such as medicine, ocean acoustics, seismology and telecommunications. The research group at HKUST embarked on their own TR transformation in the water infrastructure field. In this seminar, the speaker will use videos to illustrate the TR property of a wide range of waves and elucidate its fundamental physics. He will narrate how the TR research at HKUST is being used to develop long-range, non-destructive, non-intrusive, low-cost and reliable condition assessment technology for the water infrastructure. He will discuss some of the 15+ implementations of the TR technology in Hong Kong that are being conducted in collaboration with the water supplies department (WSD), the Drainage services department (DSD), and the Airport Authority (AA).
Speaker
Mohamed S Ghidaoui
Named Chinese Estates Professor of Engineering & Chair Professor of Civil and Environmental Engineering, Fellow of HKIE, Distinguished Fellow of IAHR, Vice-President of IAHR, The Hong Kong University of Science & Technology (HKUST)
M.S. Ghidaoui received the BASc, MASc and Ph.D. all in Civil Engineering from University of Toronto, Canada, in 1989, 1991 and 1993, respectively. Since July 1993, he has been with the Department of Civil Engineering at the Hong Kong University of Science & Technology (HKUST), where he currently holds the positions of Chair Professor position in Civil and Environmental Engineering as well as the Named Chinese Estates Professor of Engineering.
Ghidaoui is the Vice-President for Asia and the Pacific, The International Association for Hydro-Environment Engineering and Research (IAHR). He is a Distinguished Fellow of IAHR and a Fellow of the Hong Kong Institute of Engineers (HKIE). He is a member of the IAHR council as well as the executive committee. He served as the chair of IAHR’s Fluid Mechanics Committee from 2013 to 2018. He is the editor in chief of the Journal of Hydraulic Research and served as its associate editor for 15 years. He is also the associate editor of the Journal of Hydraulic Engineering, ASCE; and Journal of Hydro-environment Research, IAHR-APD. He is an editorial board member of the Theoretical & Applied Mechanics Letters (TAML), Chinese Academy of Sciences and The Chinese Academy of Theoretical and Applied Mechanics and served as an advisory board of the Journal of Hydroinformatics for 12 years. Ghidaoui’s awards include the Arthur Ippen Award, IAHR; the Albert Berry Memorial Award, American Water Works Association; Hilgard Award for best paper (runner-up), Journal of Hydraulic Engineering, ASCE; Outstanding Faculty Award at HKUST and also 2 teaching excellence awards; and silver medal at the recent International Exhibition of Inventions in Geneva, Switzerland. Ghidaoui has 5 TR-related US patents one of which is being licenced by Hyele Limited ─ a startup company which he co-founded.
Organizer: Water
Date and time: January 19, 2024, 10am CET
Format: webinar
Duration: 1h
Number of CPDs: 1.5
Mode of delivery: online
Ticket price: Free
