报告题目：Turning noise into silence: Acoustic black hole technique
报 告 人：邓杰（Jie Deng，拉蒙鲁尔大学工学院副教授）
报告时间：2026年01月27日（星期二）上午9:30—11:30
报告地点：华南理工大学五山校区 汽车科技大楼820会议室
主办单位：机械与汽车工程学院
报告摘要：
This presentation addresses wave manipulation, vibration mitigation and noise control in lightweight structures and acoustic systems, with a focus on acoustic black holes (ABHs) and their fluid-borne counterparts, sonic black holes (SBHs). ABHs exploit power-law geometric profiles to slow down and concentrate wave energy, enabling efficient dissipation with minimal added mass. A series of analytical and semi-analytical modelling tools have been developed, including the Gaussian Expansion Method and the Nullspace Coupling Method, allowing accurate treatment of complex ABH configurations and coupled solid–solid, fluid–fluid and fluid–structure systems. These approaches have supported studies on broadband vibration attenuation, hybrid metamaterials, underwater acoustics and periodic structures. More recently, attention has shifted toward SBHs in ducts and cavities, with the introduction of low-cost plug-in designs and preliminary two- and three-dimensional configurations aimed at broadband acoustic absorption.
报告人简介：
Dr. Jie Deng is a researcher with dual PhD degrees and an academic trajectory spanning Spain, China, and France. He obtained the first PhD from Ramon Llull University (Barcelona) in 2020, where the dissertation was recognized as Excellent Cum Laude and received the URL award to the best PhD in ITC. The second PhD was from Chongqing University in 2021, receiving both the University Outstanding Dissertation Award from the URL and the Chongqing Municipal Outstanding Doctoral Dissertation Award. He has been a visiting scholar at INSA Lyon, and he is a member of the Acoustical Society of China, the Chinese Society for Automotive Engineering, and a board member of the Vibration Utilization Committee of the Chinese Vibration Engineering Society. Between 2021 and 2024, He worked as an Associate Professor at Northwestern Polytechnical University. He has authored more than 47 peer-reviewed journal papers, including several highly cited works, with over 3300 citations and an h-index of 33 (Google Scholar). He has led a National Natural Science Foundation of China Young Scientist Project and currently holds a Beatriu de Pinós grant from the Government of Catalonia. He has also led technology-transfer projects with industrial partners in the transportation sector.
