On the afternoon of November 3, 2023, Professor Jiang Weibin from the Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, was invited to DGUT for academic exchanges and delivered an academic report titled "Mechanical Spectroscopy Techniques and Applications." The session was held in Conference Room A10 of the Interdisciplinary Science Research Center and was chaired by Professor Wang Biao, Dean of the School of Materials Science and Engineering. The report was conducted in a hybrid format combining online and in-person participation, with dozens of faculty members and students from the School of Materials Science and Engineering, the School of Mechanical Engineering, and other units attending.

During the session, Professor Jiang Weibin introduced the important theoretical and practical roles of internal friction and mechanical spectroscopy techniques in condensed matter physics and the development of high-damping alloys. Addressing the high standards and stringent requirements for precision and integration of core equipment in China's aerospace and other high-tech fields, Professor Jiang's team, building upon the internal friction theory research at the Institute of Solid State Physics and based on the energy dissipation principle of microscopic interface defect motion, has developed a range of high-performance high-damping alloys. He provided an in-depth explanation of their damping mechanisms, achieved engineering-scale preparation, and successfully applied these alloys in projects and facilities including the Gaofen-7 satellite, disaster reduction satellites, and synchrotron radiation facilities. In his report, Professor Jiang gave a detailed account of the origin, development, and latest advances in internal friction and mechanical spectroscopy techniques, and shared the design, preparation, and performance optimization methods for high-damping alloys developed at the Institute of Solid State Physics, along with their applications in aerospace and other fields.

Following the presentation, Professor Jiang Weibin engaged in lively discussions with the faculty members and students present on topics such as energy dissipation during material deformation, the development and performance optimization of new damping materials, and the key challenges currently faced by the field. Professor Jiang patiently answered questions raised by the attendees. The session was marked by a strong academic atmosphere, and the event received enthusiastic feedback from faculty members and students afterwards.

Professor Jiang Weibin is a research fellow at the Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences. He has long been engaged in research on crystal defects and dynamic mechanisms, as well as the development and engineering application of metal-based high-damping and vibration-damping materials. He has presided over three projects funded by the National Natural Science Foundation of China, undertaken and participated in multiple national aerospace vibration and load reduction development projects, and led the completion of over ten application-oriented industry-sponsored projects, with cumulative funding exceeding 6 million RMB. He has published over 30 papers in journals such as Physical Review B, Acta Materialia, Scripta Materialia, and Materials Science and Engineering A, and holds more than 10 authorized invention patents.

Draft: Huang Zhaowen

First Review: Liu Zhao / Second Review: Li Runxia / Third Review: Wang Biao