Keynote Speaker I
Prof. Yu Fu
Shenzhen University, China
Speech Title: Structural Defects
Localization using an LDV-enhanced Imaging Technology
Abstract: Vibration measurement, particularly mode shape measurement, is important to structural dynamic analysis and defect localization since it can validate finite element or analytical vibration models. Laser Doppler vibrometry (LDV) and high-speed digital image correlation (DIC) have become dominant methods for experimental mode shape measurement. However, vibration-based defect localization requires measurement with both high spatial resolution and accuracy. Unfortunately, the resolution of DIC is not enough to detect data anomalies caused by structural defects. On the other hand, LDV cannot achieve high-precision defect localization due to limited spatial resolution. We propose a defects localization method based on LDV-enhanced full-field vibration signatures obtained by normal-rate cameras. The experiment proves that the spectrum of LDV offers a guideline to remove the noise of cameras and can dramatically improve the vibration measurement resolution. The data fusion results show that reference-free defect localization on various structures can be easily localized.
Biodata: Dr. Yu Fu
received his bachelor's in Mechanical Engineering from
Shanghai Jiao Tong University and his Master's and
Doctoral Degree in Mechanical Engineering from the
National University of Singapore.
In 1997, Dr Fu joined the Department of Mechanical Engineering at the National University of Singapore as a Professional Officer, pursuing research on optical measurement and image processing techniques. He has published more than 100 publications in international leading journals and proceedings. In 2006, he was awarded the prestigious Alexander von Humboldt research fellowship and worked with the well-known applied optics research institute, Institut für Technische Optik (ITO), the University of Stuttgart, on optical dynamic measurement. He joined Temasek Laboratories of Nanyang Technological University in 2009. In July 2011, Dr. Fu received the prestigious Temasek Fellowship from Singapore’s Defence Ministry and Nanyang Technological University to be a Principal Investigator in Temasek Laboratories. In 2018, he joined Shenzhen University as a Professor in the College of Physics and Optoelectronic Engineering. At present, Dr Fu is doing research in the area of optical dynamic measurement and structure health diagnostics. Dr Fu is also a Fellow member of SPIE.
Prof. Yuan Luo
National Taiwan University, Taiwan
Speech Title: Advanced Optical
Systems through Flat Optics for Biomedical Applications
Abstract: Optical imaging techniques are the most commonly used methods in biology and medical research. In recent years, structured light plays vital roles to enhance resolution. In addition, nano-photonics, the emerging optical techniques, with unique optical capabilities to manipulate the basic characteristics of light have received a significant amount of interest in the field of optical microscopy and endoscopy. This talk will introduce the latest studies on the biomedical use of structured light, as well as metasurfaces. The following are the topics that will be covered: quantitative cell imaging, optical microscopy; light sheet microscopy; and optical endoscopy. This talk will also discuss the technological challenges presently encountered with metasurface from the point of view of preclinical and clinical systems.
Biodata: Yuan Luo received the MSc and PhD degrees in the College of Optical Sciences in 2007 and 2008, respectively, from the University of Arizona. After post-doctoral work at the Massachusetts Institute of Technology (MIT, 2009–2011), he joined the faculty at National Taiwan University (NTU) in 2011, where he is now Director and Professor of the Institute of Medical Device and Imaging (MDI) at NTU College of Medicine. He also serves as Program Director of Precision Health and Intelligent Medicine (PHIM) at the NTU Graduate School of Advanced Technology and holds the Associate Deanship in the NTU YongLin Institute of Health. He has worked or held visiting appointments at the Singapore-MIT Alliance for Research and Technology (SMART) Center in Singapore. His research interests are in the fields of three-dimensional (3D) and spectral imaging, shift-invariant optics theory, nanophotonics, the design of diffractive optical elements, and the implementation of 3D active structured light. He is a Fellow of the International Society for Optical Engineering (SPIE).