Interface Monitoring Using Piezoceramic Transducers and Engineering Applications
报告人：Gangbing Song, Ph.D.
Director, Smart Materials and Structures Laboratory
Professor, Department of Mechanical Engineering
Professor, Department of Civil and Environmental Engineering
Professor, Department of Electrical and Computer Engineering
University of Houston
In this talk, the author will report his recent innovative research in interface monitoring using piezoceramic transducers and applications to civil engineering. The talk first reviews the importance of interface monitoring and briefly surveys the literature. With an introduction to the basics of piezoelectric effect and piezoceramic transducers, the compressive mode and shear mode smart aggregates are presented. The smart aggregates are suitable for application in concrete structures. To monitor structural interface, the active sensing approach using piezoceramic transducers is employed. With the active sensing, the time reversal based method and the wavelet packet analysis based method are developed to monitor the structural interface. The successful applications of interface monitoring include bolt loosening monitoring, steel-concrete interface monitoring of steel-concrete composite structures, concrete crack monitoring with the presence of water, monitoring of crack and leakage in concrete pipe, and monitoring of grout fulfilment in tendon duct.
Dr. G. Song is the founding Director of the Smart Materials and Structures Laboratory and a Professor of Mechanical Engineering, Civil and Environmental Engineering, and Electrical & Computer Engineering at the University of Houston. Dr. Song is a recipient of the NSF CAREER award in 2001. Dr. Song received his Ph.D. and MS degrees from the Department of Mechanical Engineering at Columbia University in the City of New York in 1995 and 1991, respectively. Dr. Song received his B.S. degree in 1989 from Zhejiang University, P.R.China. He has expertise in smart materials and structures, structural vibration control, piezoceramics, ultrasonic transducers, structural health monitoring and damage detection. He has developed two new courses in smart materials and published more than 400 papers, including 196 peer reviewed journal articles. Dr. Song is also an inventor or co-inventor of 12 US patents and 11 pending patents. He has received research funding in smart materials and related research from NSF, DoE, NASA, Department of Education, Texas Higher Education Board, TSGC (Texas Space Grant Consortium), UTMB (University of Texas Medical Branch), OSGC (Ohio Space Grant Consortium), OAI (Ohio Aerospace Institute), ODoT (Ohio Department of Transportation), HP, OptiSolar, GE, and Cameron. In addition to his research effort, Dr. Song has passion in improving teaching using technology. He is a leader in internet enabled remote experiment/laboratory and a pioneer in systematically implementing remote experiments in engineering education. He received the prestigious Outstanding Technical Contribution Award from the Aerospace Division of ASCE, the Excellence in Research & Scholarship Award at Full Professor Level from UH, the Celebrating Excellence Award for Excellence in Education from ISA (International Society of Automation), the IEEE Educational Activities Board Meritorious Achievement Award in Informal Education, among others. Dr. Song is a member of ASCE, ASME, and IEEE. Dr. Song served as the General Chair of the Earth and Space Conference 2010, Aerospace Division, ASCE.