Prof. Hui Li received the "2015 Person of the Year Award "

We are pleased to announce that Prof. Hui Li received the 2015 Person of the Year Award  at the 10th International Workshop on Structural Health Monitoring (IWSHM) held at Stanford University in recognition of her accomplishments in this field. Prof. Hui Li is the first scholar in mainland China to be granted this honour and also the first female winner in the Person of the Year Award history.

According to the press release, A structural health monitoring person of the year (SHM-POY) will be selected by the editors and associate editors of Structural Health Monitoring: An International Journal. The Person of the Year should have made an outstanding contribution to the field of SHM that will benefit society. This contribution can be in the form of theory, analysis, applications, education, or other ways that support the discipline of SHM and benefit society. The award is meant to recognizeaccomplishments within the past year or few years. (http://structure.stanford.edu/workshop/awards.html)

Congratulations to Prof. Hui Li on this well-deserved honor!

Lecture Notification

With Prof. Hui Li's gracious invitation, Mr. Pengfei Liu from California Institute of Technology will visit Centre of Structural Monitoring and Control (SMC) at Harbin Institute of Technology and make a presentation on August 19, 2015. We sincerely welcome the interested faculties and students to join in.
The lecture room: 402, School of Civil Engineering
Time: August 19, 10:00am-11:00am
Topic: Optimal Local Multi-scale Basis for Elliptic Equations with Rough Coefficients.

ABSTRACT:
We introduce a multi-scale finite element method for second order linear elliptic equations with arbitrarily rough coefficient. We propose a local oversampling method to construct basis functions that have optimal local approximation property. Our methodology is based on the compactness of the solution operator restricted on local regions of the spatial domain, and does not depend on any scale-separation or periodicity assumption of the coefficient. We focus on a special type of basis functions that are harmonic on each element and have optimal approximation property. We first reduce our problem to approximating the trace of the solution space on each edge of the underlying mesh, and then achieve this goal through the singular value decomposition of an oversampling operator. Rigorous error estimates can be obtained through thresholding in constructing the basis functions. Numerical results for several problems with multiple spatial scales and high contrast inclusions are presented to demonstrate the compactness of the local solution space and the capacity of our method in identifying and exploiting this compact structure to achieve computational savings. This is a joint work with Prof. Thomas Y. Hou.

Biosketch of Mr. Pengfei Liu

Education Background
2008-2012 B.S. Peking University Department of Mathematics.
2012-now Ph.D. Caltech, Applied and Computational Mathematics.

Research Interest
Finite-time singularity in Fluid Equations;  Numerical Methods for PDEs with Rough Coefficients and Uncertainty.

Lecture Notification

With Prof. Hui Li's gracious invitation, Prof. Satish Nagarajaiah from Rice University will visit Centre of Structural Monitoring and Control (SMC) at Harbin Institute of Technology and make a presentation on June 21, 2015. We sincerely welcome the interested faculties and students to join in.

The lecture room: 402, School of Civil Engineering
June 21, 8:30am-10:00am
Topic: Structural Integrity Assessment of Deepwater Drilling and Production Risers subjected to Vortex Induced Vibrations based on Wavelet/Blind Identification Techniques

ABSTRACT

The safety of deepwater risers is essential for sustainable operation of offshore platforms. Designing a suitable structural health monitoring system for deepwater risers subjected to vortex induced vibration is a great challenge. Combining the global and local monitoring can greatly increase the accuracy of damage detection and fatigue estimation of deepwater risers. 
A new structural health monitoring system for deepwater risers is developed to monitor the damage in the risers with both global and local monitoring methods proposed in this paper. The global monitoring is achieved by the proposed wavelets and second order blind identification (SOBI) method.  Once the location of damage location is identified by the proposed Wavelets/SOBI method, local monitoring using robotic crawler with magnetic flux leakage (MFL) sensor is performed to further estimate the extent of damage. 
The local monitoring with MFL is verified by experimental results and finite element analysis. The global monitoring with Wavelets/SOBI is verified by a nonlinear finite element analytical model with dynamic property changes to simulate the damage [developed specifically for this study]. Wavelets/SOBI method is also verified using  MIT—Gulfstream test data. Fatigue estimation is performed using rain flow cycle count method. Global monitoring results from the proposed blind output only identification technique and fatigue estimation is found to be accurate. Local inspection using robotic MFL sensors is efficient and provides high resolution results. 
The proposed structural integrity assessment framework can be applied to deepwater risers, floating platforms and for cable stayed bridges. Robotic MFL crawler can be used for in-line inspection for various pipelines.

Biosketch of Prof. Satish Nagarajaiah

Satish Nagarajaiah is a Professor of Civil and Environmental Engineering at Rice University in Houston, Texas. He is affiliated with the Mechanical Engineering Department, Material Science and Nano-Engineering Department at Rice. His teaching and research interests are in the areas of structural engineering, structural dynamic systems, seismic protection, earthquake engineering, structural control, system identification, structural health monitoring, offshore structures, and applied nanotechnology. His research is funded by the National Science Foundation (NSF), NASA, DOE, AFOSR, ONR, other State, Federal, Private Agencies and Industries. NSF has awarded him the prestigious faculty early CAREER award for innovative research in Adaptive Stiffness Structures (1998). He and his coworkers were awarded the American Society of Civil Engineers (ASCE) Moisseiff award in 2015, for their 2014 Journal of Structural Engineering on Adaptive Negative Stiffness Structural Systems. His editorial activities include service as the Managing Editor of the Journal of Structural Engineering [ASCE International journal] (2011—present), Editor of the Structural Control and Health Monitoring [Wiley International Journal] (2008—present) and Editor-in-chief [North America] of Structural Monitoring and Maintenance [Techno-press International Journal] (2014—present). ASCE Structural Engineering Institute (SEI) elected him as an inaugural fellow in 2012 for his service to structural engineering community. He has served on numerous founded and chaired numerous committees in SEI, EMI, and IASCM on Structural Control and Monitoring. For further details visit his website satishnagarajaiah.rice.edu.

Dr. Xiangdong Du from RWDI visited SMC

With Prof Hui Li’s gracious invitation, Dr. Xiangdong Du from RWDI visited Center of Structural Monitoring and Control (SMC), School of Civil Engineering at Harbin Institute of Technology (HIT) on April 24, 2015. RWDI is a wind engineering and environmental engineering consulting firm and has featured on numerous television documentaries involving wind engineering and related services for the worlds tallest skyscrapers and landmark structures. Dr. Xiangdong Du gave a lecture on Structural Wind Engineering and Sustainable Development for both the undergraduates and graduates at school of civil engineering. Then he visited the Joint Laboratory of Wind Tunnel and Water Flume, the Structural and Earthquake-resistant Testing Center and the Laboratory of Structural Monitoring and Control in HIT. The people of SMC and Dr. Xiangdong Du hold a seminar on wind engineering research and cooperation at the same day.

Biography of Dr. Xiangdong Du

Xiangdong Du was a project specialist of RWDI previously. He now is the director of RWDI China Inc. His areas of specialization in RWDI are the cladding and structural wind loads on tall buildings and large roofs. He worked in CFD consulting group. He graduated from Tsinghua University with Engineering Bachelor degree and obtained his Master degree from Peking University. He received his Ph.D. from mechanical engineering, McGill University. His Ph.D. research centered on energy vibrational principles, CFD simulation and computational solid mechanics. He also has more ten years consulting and research experience in wind tunnels, water tunnels and tow tanks, which covers wind engineering and fluid mechanics.

Prof. James Brownjohn from the University of Exeter visited SMC

With Prof Hui Li’s gracious invitation, Prof. James Brownjohn from the University of Exeter visited Center of Structural Monitoring and Control (SMC), School of Civil Engineering at Harbin Institute of Technology (HIT) from April 21 to 24, 2015. Prof. James Brownjohn gave a lecture on structural dynamics, full-scale performance and SHM, moreover he also gave an introduction of a new MSc program in Exeter for both the undergraduates and graduates at school of civil engineering. The people of SMC andProf. James Brownjohn hold a seminar on SHM research and cooperation on April 24.

Profile of Prof. James Brownjohn

Professor Brownjohn joined the University of Exeter in 2013 after periods at University of Bristol (1984-1992), Nanyang Technological University Singapore (1992-2004), University of Plymouth (2004-2005) and University of Sheffield (2005-2013). His academic career has revolved around experimental assessment of the performance of a range of civil structures, using full-scale dynamic testing, long-term monitoring and shaking table testing.

His present research and professional interests include wind engineering, earthquake engineering, structural health monitoring (SHM), finite element model updating, vibration serviceability, system identification and biomechanics. He has published in all these areas in a number of journals. His experience with ambient vibration testing and operational modal analysis using minimal portable equipment is a complement to the forced vibration testing approach traditionally used by the Vibration Engineering Section, of which he is a member.

Professor Brownjohn is involved in promoting developments in structural health monitoring through involvement in the International Society for Structural Health monitoring of Intelligent Infrastructure as Vice President and by contributing to the ASCE State of the Art Report on Structural Identification of Constructed Systems.

• 1 Prof. Hui Li received the "2015 Person of the Year Award "
• 2 Lecture Notification
• 3 Lecture Notification
• 4 Dr. Xiangdong Du from RWDI visited SMC
• 5 Prof. James Brownjohn from the University of Exeter visited SMC