Dr. Keng-Tsang Hsu Profile

Dr. Keng-Tsang Hsu

Dr. at Chaoyang Univ of Technology

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Author

Publications (14)

Proceedings Article | 18 April 2023 Presentation + Paper

Using the 3-D velocities contour plot of surface waves to evaluate the fire-damaged concrete slabs

Ying-Tzu Ke, Chia-Chi Cheng, Yung Chiang Lin, Keng-Tsang Hsu, Dong-Long Jiang, Ting-Yu Lin

Proceedings Volume 12487, 124870F (2023) https://doi.org/10.1117/12.2666450

KEYWORDS: Nondestructive evaluation, Fire, Dispersion, Receivers, Interpolation, Windows, Wave propagation, Visualization

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Proceedings Article | 18 April 2022 Presentation + Paper

Identifying defects under shadows from a series of thermal images by employing robust principal component analysis and local binary function

Yishuo Huang, Qian-Ying Yang, Keng-Tsang Hsu, Chih-Hung Chiang

Proceedings Volume 12047, 120470Y (2022) https://doi.org/10.1117/12.2613152

KEYWORDS: Principal component analysis, Thermography, Infrared imaging, Image segmentation, Feature extraction, Lithium, Image processing, Image analysis

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Proceedings Article | 22 April 2020 Presentation + Paper

3D vibration studies of large rotating structures using DIC

David Kumar, Chih-Hung Chiang, Yung-Chaing Lin, Keng-Tsang Hsu

Proceedings Volume 11381, 1138124 (2020) https://doi.org/10.1117/12.2557007

KEYWORDS: Digital image correlation, Cameras, Calibration, Imaging systems, 3D metrology, 3D image processing, Sensors, Nondestructive evaluation

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Proceedings Article | 22 April 2020 Presentation + Paper

Building cracks identification by employing image segmentation

Yishuo Huang, Qain-Ying Yang, Keng-Tsang Hsu, Chih-Hung Chiang

Proceedings Volume 11381, 113811Y (2020) https://doi.org/10.1117/12.2558335

KEYWORDS: Image segmentation, Thermography, Infrared imaging, Infrared radiation, Acoustics, Image processing, Image analysis, Detection and tracking algorithms, Image processing algorithms and systems, Inspection

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Proceedings Article | 1 April 2019 Paper

Identifying the stiffness reduction in the supporting tower of wind turbines: a numerical approach

Yung-Chiang Lin, Chih-Hung Chiang, Chih-Peng Yu, Keng-Tsang Hsu

Proceedings Volume 10971, 1097122 (2019) https://doi.org/10.1117/12.2522240

KEYWORDS: Wind turbine technology, Computer simulations, Numerical analysis, Analytical research

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Proceedings Article | 1 April 2019 Paper

Evaluating the shadow or glare effects in thermography for non-destructive testing and evaluation

Yishuo Huang, Chih-Hung Chiang, Keng-Tsang Hsu

Proceedings Volume 10971, 1097113 (2019) https://doi.org/10.1117/12.2514175

KEYWORDS: Thermography, Image segmentation, Infrared imaging, Infrared radiation, Thermal modeling, Nondestructive evaluation, Digital imaging, Image processing, Temperature metrology

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Proceedings Article | 27 March 2018 Paper

The effect of reinforcing bars to flaw detection in RC structure using group velocity profile generated by surface waves

Yung-Chiang Lin, Chia-Chi Cheng, Hong-Hua Wang, Keng-Tsang Hsu, Chih-Hung Chiang

Proceedings Volume 10599, 105992K (2018) https://doi.org/10.1117/12.2317730

KEYWORDS: Dispersion, Signal processing, Receivers, Bridges, Wave plates, Composites, Sensors, Wave propagation, Solids, Numerical simulations

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Proceedings Article | 27 March 2018 Presentation + Paper

Combining the 3D model generated from point clouds and thermography to identify the defects presented on the facades of a building

Yishuo Huang, Chih-Hung Chiang, Keng-Tsang Hsu

Proceedings Volume 10599, 105990G (2018) https://doi.org/10.1117/12.2297656

KEYWORDS: 3D modeling, Image segmentation, Thermography, Clouds, Unmanned aerial vehicles, Nondestructive evaluation, Infrared imaging, 3D image processing

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Defects presented on the facades of a building do have profound impacts on extending the life cycle of the building. How to identify the defects is a crucial issue; destructive and non-destructive methods are usually employed to identify the defects presented on a building. Destructive methods always cause the permanent damages for the examined objects; on the other hand, non-destructive testing (NDT) methods have been widely applied to detect those defects presented on exterior layers of a building. However, NDT methods cannot provide efficient and reliable information for identifying the defects because of the huge examination areas. Infrared thermography is often applied to quantitative energy performance measurements for building envelopes. Defects on the exterior layer of buildings may be caused by several factors: ventilation losses, conduction losses, thermal bridging, defective services, moisture condensation, moisture ingress, and structure defects. Analyzing the collected thermal images can be quite difficult when the spatial variations of surface temperature are small. In this paper the authors employ image segmentation to cluster those pixels with similar surface temperatures such that the processed thermal images can be composed of limited groups. The surface temperature distribution in each segmented group is homogenous. In doing so, the regional boundaries of the segmented regions can be identified and extracted. A terrestrial laser scanner (TLS) is widely used to collect the point clouds of a building, and those point clouds are applied to reconstruct the 3D model of the building. A mapping model is constructed such that the segmented thermal images can be projected onto the 2D image of the specified 3D building. In this paper, the administrative building in Chaoyang University campus is used as an example. The experimental results not only provide the defect information but also offer their corresponding spatial locations in the 3D model.

Proceedings Article | 19 April 2017 Paper

Foundation stiffness in the linear modeling of wind turbines

Chih-Hung Chiang, Chih-Peng Yu, Yan-Hao Chen, Jiunnren Lai, Keng-Tsang Hsu, Chia-Chi Cheng

Proceedings Volume 10169, 101691S (2017) https://doi.org/10.1117/12.2260662

KEYWORDS: Data modeling, Nondestructive evaluation, Computer simulations, Soil science, Analytical research, Systems modeling, Numerical modeling, Wind turbine technology, Structural dynamics, Vibration simulation

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Proceedings Article | 8 April 2016 Paper

Dynamic survey of wind turbine vibrations

Chih-Hung Chiang, Keng-Tsang Hsu, Chia-Chi Cheng, Chieh-Chen Pan, Chi-Luen Huang, Tao-Ming Cheng

Proceedings Volume 9804, 98040J (2016) https://doi.org/10.1117/12.2219483

KEYWORDS: Unmanned aerial vehicles, Interferometry, Interferometers, Time-frequency analysis, Continuous wavelet transforms, Wind turbine technology, Radar signal processing, Wavelets, Nondestructive evaluation, Wind energy, Onboard cameras

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Proceedings Article | 1 April 2015 Paper

Time frequency analyses of vibrations of wind turbine towers

Chih-Hung Chiang, Chi-Luen Huang, Keng-Tseng Hsu, Chia-Chi Cheng, Chih-Peng Yu, Jiunnren Lai

Proceedings Volume 9437, 94371C (2015) https://doi.org/10.1117/12.2084154

KEYWORDS: Time-frequency analysis, Wind measurement, Wind energy, Fourier transforms, Solids, Nondestructive evaluation, Microwave radiation, Interferometers, Signal analysis, Wind turbine technology

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Proceedings Article | 9 March 2014 Paper

Remote monitoring and nondestructive evaluation of wind turbine towers

Chih-Hung Chiang, Chih-Peng Yu, Keng-Tsang Hsu, Chia-Chi Cheng, Ying-Tzu Ke, Yi-Ru Shih

Proceedings Volume 9063, 90631J (2014) https://doi.org/10.1117/12.2044942

KEYWORDS: Nondestructive evaluation, Turbulence, Sensors, Structural dynamics, Microwave radiation, Interferometers, Numerical modeling, Wind turbine technology

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Proceedings Article | 9 March 2014 Paper

Dynamic monitoring of stay cables by enhanced cable equations

Chih-Peng Yu, Keng-Tsang Hsu, Chih-Hung Chiang, Chia-Chi Cheng

Proceedings Volume 9063, 90630U (2014) https://doi.org/10.1117/12.2044918

KEYWORDS: Estimation theory, Bridges

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Proceedings Article | 20 April 2012 Paper

Evaluation of bridge span by recovered stiffness data obtained with moving vehicle loadings

Chia-Chi Cheng, Chih-Peng Yu, Ying-Tzu Ke, Keng-Tsang Hsu

Proceedings Volume 8348, 83482A (2012) https://doi.org/10.1117/12.915142

KEYWORDS: Bridges, Smoothing, Electronic filtering, Sensors, Biological research, Roads, Beam analyzers, Current controlled current source, Lawrencium, Superposition

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Showing 5 of 14 publications

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