Prof. Zhongdong Duan Profile

Prof. Zhongdong Duan

at Harbin Institute of Tech Shenzhen

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Author

Publications (11)

Proceedings Article | 8 March 2014 Paper

Compressed sensing techniques for arbitrary frequency-sparse signals in structural health monitoring

Zhongdong Duan, Jie Kang

Proceedings Volume 9061, 90612W (2014) https://doi.org/10.1117/12.2048276

KEYWORDS: Associative arrays, Compressed sensing, Structural health monitoring, Signal processing, Detection theory, Nonlinear optics, Finite element methods, Performance modeling, Computer programming, Data acquisition

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Structural health monitoring requires collection of large number sample data and sometimes high frequent vibration data for detecting the damage of structures. The expensive cost for collecting the data is a big challenge. The recent proposed Compressive Sensing method enables a potentially large reduction in the sampling, and it is a way to meet the challenge. The Compressed Sensing theory requires sparse signal, meaning that the signals can be well-approximated as a linear combination of just a few elements from a known discrete basis or dictionary. The signal of structure vibration can be decomposed into a few sinusoid linear combinations in the DFT domain. Unfortunately, in most cases, the frequencies of decomposed sinusoid are arbitrary in that domain, which may not lie precisely on the discrete DFT basis or dictionary. In this case, the signal will lost its sparsity, and that makes recovery performance degrades significantly. One way to improve the sparsity of the signal is to increase the size of the dictionary, but there exists a tradeoff: the closely-spaced DFT dictionary will increase the coherence between the elements in the dictionary, which in turn decreases recovery performance. In this work we introduce three approaches for arbitrary frequency signals recovery. The first approach is the continuous basis pursuit (CBP), which reconstructs a continuous basis by introducing interpolation steps. The second approach is a semidefinite programming (SDP), which searches the sparest signal on continuous basis without establish any dictionary, enabling a very high recovery precision. The third approach is spectral iterative hard threshold (SIHT), which is based on redundant DFT dictionary and a restricted union-of-subspaces signal model, inhibiting closely spaced sinusoids. The three approaches are studied by numerical simulation. Structure vibration signal is simulated by a finite element model, and compressed measurements of the signal are taken to perform signal recovery. Comparison of the performance of the three approaches is made, and future work on design of compressive sampling testing system for vibration signal is proposed.

Proceedings Article | 11 April 2008 Paper

Ultrasonic phased array inspection imaging technology for NDT of offshore platform structures

Baohua Shan, Hua Wang, Yongning Liang, Zhongdong Duan, Jinping Ou

Proceedings Volume 6934, 69340O (2008) https://doi.org/10.1117/12.779296

KEYWORDS: Inspection, Ultrasonics, Phased arrays, Clocks, Imaging systems, Transducers, Scanners, Imaging technologies, Nondestructive evaluation, Computing systems

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Proceedings Article | 8 April 2008 Paper

Local strain monitoring study of offshore platform T shaped tubular joint using fiber Bragg grating sensors

Xuefeng Zhao, Zhongdong Duan, Jinping Ou

Proceedings Volume 6932, 69320E (2008) https://doi.org/10.1117/12.778695

KEYWORDS: Fiber Bragg gratings, Sensors, Finite element methods, Surface finishing, Actuators, Data corrections, Data modeling, Instrument modeling, Control systems, Civil engineering

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Proceedings Article | 1 November 2007 Paper

Effect of multi-walled carbon nanotubes on the vibration-reduction behavior of cement

Zhongdong Duan, Jianlin Luo

Proceedings Volume 6423, 64230R (2007) https://doi.org/10.1117/12.779337

KEYWORDS: Cements, Carbon nanotubes, Composites, Interfaces, Carbon, Silica, Particles, Testing and analysis, Control systems, Polymers

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Proceedings Article | 10 April 2007 Paper

The application of ultrasonic phased array technology to offshore platform structures inspection

Shan Baohua, Wang Hua, Zhongdong Duan, Jinping Ou

Proceedings Volume 6530, 65300U (2007) https://doi.org/10.1117/12.716010

KEYWORDS: Inspection, Phased arrays, Ultrasonics, Clocks, Transducers, Imaging systems, Scanners, Computing systems, Nondestructive evaluation, Image fusion

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Proceedings Article | 5 March 2007 Paper

The application of ultrasonic phased array system to the inspection of fillet weld of flat plate

Baohua Shan, Hua Wang, Xin Wang, Zhongdong Duan, Jinping Ou

Proceedings Volume 6595, 659522 (2007) https://doi.org/10.1117/12.725803

KEYWORDS: Ultrasonics, Phased arrays, Inspection, Imaging systems, Transducers, Scanners, Image fusion, Computing systems, Shape analysis, Nondestructive evaluation

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Proceedings Article | 11 April 2006 Paper

Updating finite element model of structures with semi-rigid joints and boundary

Yang Liu, Zhongdong Duan, Hao Liu

Proceedings Volume 6174, 61743L (2006) https://doi.org/10.1117/12.661010

KEYWORDS: Finite element methods, Aluminum, Data modeling, Optimization (mathematics), Smart structures, Optical simulations, Analytical research, Sensors, Darmstadtium, Damage detection

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Proceedings Article | 5 April 2006 Paper

Study of hierarchical decentralized vibration control of structures

Qingsheng Zhou, Zhongdong Duan

Proceedings Volume 6174, 61740N (2006) https://doi.org/10.1117/12.661008

KEYWORDS: Control systems, Vibration control, Earthquakes, Civil engineering, Astatine, Bismuth, Safety, MATLAB, Matrices, Feedback control

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Proceedings Article | 17 May 2005 Paper

Finite element model updating of structures using a hybrid optimization technique

Zhongdong Duan, Yang Liu, Billie Spencer

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.602009

KEYWORDS: Optimization (mathematics), Finite element methods, Data modeling, Chaos, Computer simulations, Sensors, Smart structures, Complex systems, Algorithm development, Systems modeling

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Proceedings Article | 17 May 2005 Paper

Structural damage detection by wavelet transform and probabilistic neural network

Guirong Yan, Zhongdong Duan, Jinping Ou

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.602012

KEYWORDS: Wavelets, Neural networks, Damage detection, Wavelet transforms, Fourier transforms, Digital filtering, Artificial neural networks, Image classification, Composites, Smart materials

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Proceedings Article | 27 July 2004 Paper

New kind of structural fatigue life prediction smart sensor

Zhou Zhi, Zhongdong Duan, Zhonghui Jia, Jinping Ou

Proceedings Volume 5384, (2004) https://doi.org/10.1117/12.540380

KEYWORDS: Resistance, Smart sensors, Nickel, Structural health monitoring, Chemical species, Manufacturing, Fabrication, Civil engineering, Roads, Safety

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Showing 5 of 11 publications

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