Symmetry in Structural Health Monitoring II

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 4683

Special Issue Editors

School of Civil Engineering, Chongqing Univerity, Chongqing, China
Interests: bridge and structure inspection and reinforcement; structural health monitoring; structural vibration; seismic evaluation for structure
Special Issues, Collections and Topics in MDPI journals
Engineering Research Center of Railway Environment Vibration and Noise Ministry of Education, East China Jiaotong University, Nanchang 330013, China
Interests: railway engineering; structural dynamics; fracture mechanics
Special Issues, Collections and Topics in MDPI journals
Ocean Hydrodynamic Center, Tianjin Research Institute for Water Transport Engineering, Tianjin, China
Interests: port structure inspection & reinforcement; structural health monitoring; underwater concrete repairing materials
Department of Civil Engineering, Xiamen University, Xiamen 361001, China
Interests: structural health monitoring; condition evaluation; wind-vehicle-bridge vibration; dynamic and static analysis; computer vision; deep learning
School of Civil Engineering, Tianjin University, Tianjin 300350, China
Interests: seismic resistance of high-rise steel and composite structures; bridge seismic; high-performance structure
Department of Intelligent Industrial Research, China Academy of Industrial Internet, Beijing, China
Interests: machine learning; Industrial Internet of Things; structural health monitoring

Special Issue Information

Dear Colleagues,

Structural health monitoring refers to the strategy and process of damage diagnosis and characterization of engineering structures. With the development of urbanization, various types of infrastructure and mechanical equipment provide people with convenient life services. It also shows the importance of structural health monitoring where symmetry is widely used. By analyzing the symmetry of the structure and using sensors to collect data, it is possible to study the performance of the structure itself. This is a hot topic in current research. The collected data contains the structural random vibration and environmental noise; good equipment can improve the efficiency of data collection; effective denoising methods with the knowledge of structural dynamics can extract the characteristic parameters of the structure from the data.

In this Special Issue on symmetry, we mainly discuss the application of symmetry in various structural health monitoring. For example, considering the health monitoring of a known structure, by obtaining the static or dynamic response of the structure, using different signal processing methods, including some advanced filtering methods, to remove the influence of environmental noise, and extract structural feature parameters to determine the safety of the structure. These damage diagnosis methods can also be effectively applied to various types of infrastructure and mechanical equipment. For this reason, the vibration control of various structures and the knowledge of random structure dynamics should be considered, which will promote the rapid development of the structural health monitoring. Among them, signal extraction and evaluation methods are also worthy of study. The improvement of signal acquisition instruments and acquisition methods improves the accuracy of data. A good evaluation method will help to correctly understand the performance with different types of infrastructure and mechanical equipment.

Prof. Dr. Yang Yang
Prof. Dr. Linya Liu
Prof. Dr. Songgui Chen
Prof. Dr. Zhiwei Chen
Prof. Dr. Qiuhong Zhao
Dr. Weixi Gu
Guest Editors

Manuscript Submission Information

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Keywords

  • symmetry
  • structural health monitoring
  • structural diagnosis
  • structural vibration
  • information processing

Published Papers (4 papers)

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Research

18 pages, 11415 KiB  
Article
Guided Wave-Based Damage Detection of Square Steel Tubes Utilizing Structure Symmetry
Symmetry 2023, 15(4), 805; https://doi.org/10.3390/sym15040805 - 26 Mar 2023
Cited by 2 | Viewed by 967
Abstract
Square steel tube, which is widely used in civil engineering, can suffer from a wide variety of damages and aging defects, thus its nondestructive testing (NDT) has attracted wide attention. This work proposes an ultrasonic guided wave (UGW)-based damage detection method for square [...] Read more.
Square steel tube, which is widely used in civil engineering, can suffer from a wide variety of damages and aging defects, thus its nondestructive testing (NDT) has attracted wide attention. This work proposes an ultrasonic guided wave (UGW)-based damage detection method for square steel tubes using structure symmetry. Firstly, the dispersion characteristics of square steel tubes are obtained using the semi-analytical finite element (SAFE) method, after which the optimal guided wave modes for damage located on the long and short edges of the steel tube are selected by modal analysis. Then, using the symmetry of the square steel tube’s section, the symmetric layout scheme of the transmitters and the receivers is designed; on this basis, a signal processing strategy for damage detection is proposed by subtracting the receiving signals obtained from symmetric positions. Finally, the effectiveness of the proposed damage detection method is verified by numerical simulations and laboratory experiments. The results show that the proposed method has good inspection accuracy for crack and hole damages on both the long and short edges of square steel tube because the dispersion effect and clutters can be reduced utilizing structure symmetry. It is worth mentioning that the inspection effect for corner holes can be enhanced by modifying the position of the receivers. Full article
(This article belongs to the Special Issue Symmetry in Structural Health Monitoring II)
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30 pages, 9083 KiB  
Article
Intelligent Health Monitoring of Cable Network Structures Based on Fusion of Twin Simulation and Sensory Data
Symmetry 2023, 15(2), 425; https://doi.org/10.3390/sym15020425 - 06 Feb 2023
Cited by 2 | Viewed by 1038
Abstract
The precise and effective prognosis of safety risks is vital to ensure structural safety. This study proposed an intelligent method for the health monitoring of cable network structures, based on the fusion of twin simulation and sensory data. Firstly, the authors have established [...] Read more.
The precise and effective prognosis of safety risks is vital to ensure structural safety. This study proposed an intelligent method for the health monitoring of cable network structures, based on the fusion of twin simulation and sensory data. Firstly, the authors have established a framework that integrate simulation data with sensory data. The authors have established a high-fidelity twin model using genetic algorithm. The mechanical parameters of the structures were obtained based on the twin model. The key components of the structure are captured by using Bayesian probability formula and multiple mechanical parameters. The fusion mechanism of twin simulation and random forest (RF) was established to capture the key influencing factors. The coupling relationship between structural safety state and key factors was obtained, and the safety maintenance mechanism was finally formed. In view of the risk prognosis of the structure, the establishment method for the database of influencing factors and maintenance measures was formed. The authors used the Speed Skating Gymnasium of 2022 Winter Olympic Games (symmetric structure) as the case study for validating the feasibility and effectiveness of the proposed method. The theoretical method formed in this study has been applied to the symmetric structure, which provides ideas for the safety maintenance of large symmetric structures. Meanwhile, this research method also provides a reference for the health monitoring of asymmetric structures. Full article
(This article belongs to the Special Issue Symmetry in Structural Health Monitoring II)
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18 pages, 6239 KiB  
Article
Safety Monitor Symmetry Concerning Beam Bridge Damage Utilizing the Instantaneous Amplitude Square Method
Symmetry 2023, 15(2), 365; https://doi.org/10.3390/sym15020365 - 30 Jan 2023
Viewed by 966
Abstract
It is critical for the safety monitoring of highway bridges that beam bridge damage can be identified from the dynamic response of passing vehicles. Numerical simulations of passing vehicles were conducted utilizing the vehicle–bridge coupling vibration theory and the indirect measurement method. Fast [...] Read more.
It is critical for the safety monitoring of highway bridges that beam bridge damage can be identified from the dynamic response of passing vehicles. Numerical simulations of passing vehicles were conducted utilizing the vehicle–bridge coupling vibration theory and the indirect measurement method. Fast Fourier transform was performed on the time history response of vehicle acceleration, and the driving frequency component response and its instantaneous amplitude square value (IAS value) were obtained by band-pass filtering and Hilbert transform processing. The identified IAS value detected the damage location of the bridge. The identification method of IAS value is used to analyze the applicability of a simply supported beam bridge, a continuous beam bridge, and an irregular skew beam bridge. The effects of vehicle speed, vehicle damping, bridge damping, and a social vehicle on damage identification are discussed. The results show that the effect of damage location is better when the vehicle speed is less than 4 m/s. In the presence of social vehicles, the excitation on the bridge increases, and the damage location can still be accurately determined by the IAS method. Vehicle damping and bridge damping have little effect on the results of damage identification. In structural health monitoring for bridges, this paper can provide a theoretical reference for the application of IAS motion sensing to identify the damage location indirectly. Full article
(This article belongs to the Special Issue Symmetry in Structural Health Monitoring II)
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17 pages, 4992 KiB  
Article
Energy Dissipation Enhanced by Multiple Hinges in Bridge Piers with CFST Y-Shaped Fuses
Symmetry 2022, 14(11), 2371; https://doi.org/10.3390/sym14112371 - 10 Nov 2022
Viewed by 1085
Abstract
Concrete-filled steel tubular Y-shaped (CFST-Y) piers are good candidates for meeting the structural and aesthetic requirements of bridges. By using the theoretical and nonlinear static (pushover) analyses, the seismic performances of three types of CFST-Y piers were evaluated at different seismic hazard levels. [...] Read more.
Concrete-filled steel tubular Y-shaped (CFST-Y) piers are good candidates for meeting the structural and aesthetic requirements of bridges. By using the theoretical and nonlinear static (pushover) analyses, the seismic performances of three types of CFST-Y piers were evaluated at different seismic hazard levels. The theoretical formulas were first proposed to estimate the lateral stiffnesses for piers with different pier–deck connections. Then, the structural ductility with the development of plastic hinges in piers was investigated based on the pushover analyses. The results demonstrate that the structural dimensions, deck mass, shear limit, and stiffness of bearings can remarkably affect the formation of hinges and thereby lead to different energy dissipation patterns to achieve the expected performance in piers. The findings suggest an economic design strategy of piers, using CFST-Y members as energy dissipation fuses with multiple hinges, to achieve low-level seismic performance cost-effectively. Full article
(This article belongs to the Special Issue Symmetry in Structural Health Monitoring II)
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