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Applied Sciences
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Advances in Civil Structural Damage Detection and Health Monitoring
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Advances in Civil Structural Damage Detection and Health Monitoring

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 5905

Special Issue Editor

Dr. Norhisham H. Bakhary

E-Mail Website
Guest Editor
Associate Professor, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
Interests: structural health monitoring; vibration-based damage detection; artificial neural network

Special Issue Information

Dear Colleagues,

Aging civil structure is a natural phenomenon; however, inappropriate maintenance may result in catastrophic incidents that may lead to loss of life and tremendous repair cost. Traditional local methods are not efficient in helping engineers to efficiently make decisions for structural maintenance, since they are unable to precisely determine the damage to structural capacity and also require prior knowledge of the damage in advance. Therefore, an efficient method for advanced detection of structural damage and health monitoring has became urgent and critical for the safety of civil structures.

For this Special Issue, we invite submission of articles exploring advance methods for damage detection and structural health monitoring in civil structures. Theoretical, experimental, and review manuscripts are welcome.

Dr. Norhisham H. Bakhary
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • structural health monitoring
  • damage detection
  • civil structure
  • vibration-based damage detection

Published Papers (6 papers)

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Research

17 pages, 6541 KiB  
Article
Numerical Simulation and Experimental Verification of Quality Detection of Grouting in Pre-Stressed Pipelines Based on Transmission Wave Method
by Qingshan Wang, Yun Luo, Yang Liu, Minghao Song, Heng Liu and Xiaoge Liu
Appl. Sci. 2024, 14(9), 3773; https://doi.org/10.3390/app14093773 - 28 Apr 2024
Viewed by 316
Abstract
The quality of grouting in pre-stressed pipelines plays a critical role in ensuring the safety and durability of pre-stressed concrete bridges. In this study, the transmission wave method was proposed as a means to assess the quality of grouting in pre-stressed pipelines. The [...] Read more.
The quality of grouting in pre-stressed pipelines plays a critical role in ensuring the safety and durability of pre-stressed concrete bridges. In this study, the transmission wave method was proposed as a means to assess the quality of grouting in pre-stressed pipelines. The ABAQUS finite element simulation (FE simulation) method was used to study the propagation of hammer stress waves in pre-stressed pipes. A full-scale test was conducted to verify the numerical simulation using the AGI-BWG instrument system developed to detect the quality of grouting. The results show that the propagation speed of transmitted waves increases and the frequency shifts towards higher frequencies with an increase in void length within pre-stressed pipelines. This research suggests that the propagation velocity of elastic waves in pre-stressed pipelines serves as a key indicator of grouting quality. The transmission wave method, based on hammer signals, proves to be an effective tool for detecting the quality of grouting in pre-stressed pipelines. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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17 pages, 7763 KiB  
Article
Photoelectricity Theory-Based Concrete Crack Image Segmentation and Optimal Exposure Interval Research
by Haijing Liu, Renwei Luo, Yan Liu, Ji He, Yongzhi Sang, Jiayan Zheng and Zhixiang Zhou
Appl. Sci. 2024, 14(4), 1527; https://doi.org/10.3390/app14041527 - 14 Feb 2024
Viewed by 631
Abstract
To solve the problem of low accuracy in automatic concrete crack image segmentation and the non-standardization of concrete crack image datasets, an exposure-based concrete crack image capture scene characterization method was proposed, and the optimal exposure interval for crack segmentation was presented by [...] Read more.
To solve the problem of low accuracy in automatic concrete crack image segmentation and the non-standardization of concrete crack image datasets, an exposure-based concrete crack image capture scene characterization method was proposed, and the optimal exposure interval for crack segmentation was presented by multiple scene image capture experiments. First, current public crack datasets were collected and analyzed, and it was shown that improper spatial resolution, mislabeling, overexposure, and defocus are frequent non-standardization problems in crack dataset production. Through the analysis of the photoelectric principle in concrete crack imaging, an equivalent exposure was set as a core indicator for scene characterization. Twenty-one indoor scenes were designed by varying the illumination intensity and exposure time, and the experimental results showed that an equivalent exposure can be a core control index for scene characterization. The grayscale distribution law of concrete crack images was analyzed with four specimens’ images captured indoors in 50 exposure scenes, and the segmentation accuracy of an image from each scene was calculated through comparison with corresponding manually labeled binary files. The experiment’s results revealed that 5~50 lx·s was the optimal equivalent exposure interval for concrete crack image segmentation, in which better segmentation accuracy was achieved with an F1 score of up to 96.3%. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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19 pages, 5834 KiB  
Article
New Methods for Assessing External Sulfate Attack on Cement-Based Specimens
by Othman Omikrine Metalssi, Marc Quiertant, Mike Jabbour and Véronique Baroghel-Bouny
Appl. Sci. 2024, 14(4), 1410; https://doi.org/10.3390/app14041410 - 8 Feb 2024
Viewed by 641
Abstract
This paper presents two original methods for monitoring and evaluating concrete specimens/structures affected by external sulfate attack (ESA). The first is a drying method developed to assess the penetration depth of sulfate ions in a concrete structure, as this parameter is a relevant [...] Read more.
This paper presents two original methods for monitoring and evaluating concrete specimens/structures affected by external sulfate attack (ESA). The first is a drying method developed to assess the penetration depth of sulfate ions in a concrete structure, as this parameter is a relevant indicator of the progress of the ESA. This method has been specifically designed for on-site investigations. The second experimental method involves the use of optical fibers capable of measuring the swelling response of specimens to ESA in real time. According to the results obtained, these two new methods seem likely to be used to complement or replace traditional methods such as inductively coupled plasma (ICP) for determining the penetration depth of sulfate ions or as extensometers for measuring swelling. These traditional methods (ICP and extensometers) are generally considered painful and time-consuming, whereas, because of its simplicity, the proposed drying method will enable experts to regularly inspect concrete structures and make informed decisions on the measures to be taken to repair or prevent further damage induced by ESA, while the second method appears promising for experimental studies involving the monitoring of a large number of ESA-affected specimens. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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18 pages, 4108 KiB  
Article
An Integrated Approach to Leak Detection in Water Distribution Networks (WDNs) Using GIS and Remote Sensing
by Rabab Al Hassani, Tarig Ali, Md Maruf Mortula and Rahul Gawai
Appl. Sci. 2023, 13(18), 10416; https://doi.org/10.3390/app131810416 - 18 Sep 2023
Viewed by 1984
Abstract
Leakages in the water distribution networks (WDNs) are real problems for utilities and other governmental agencies. Timely leak detection and location identification have been challenges. In this paper, an integrated approach to geospatial and infrared image processing was used for robust leak detection. [...] Read more.
Leakages in the water distribution networks (WDNs) are real problems for utilities and other governmental agencies. Timely leak detection and location identification have been challenges. In this paper, an integrated approach to geospatial and infrared image processing was used for robust leak detection. The method combines drops in flow, pressure, and chlorine residuals to determine potential water leakage locations in the WDN using Geographic Information System (GIS) techniques. GIS layers were created from the hourly values of these three parameters for the city of Sharjah provided by the Sharjah Electricity, Water, and Gas Authority (SEWA). These layers are then analyzed for locations with dropped values of each of the parameters and are overlaid with each other. In the case where there were no overlaying locations between flow and pressure, further water quality analysis was avoided, assuming no potential leak. In the case where there are locations with drops in flow and pressure layers, these overlaying locations are then examined for drops in chlorine values. If overlaying locations are found, then these regions are considered potential leak locations. Once potential leak locations are identified, a specialized remote sensing technique can be used to pinpoint the leak location. This study also demonstrated the suitability of using an infrared camera for leak detection in a laboratory-based setup. This paper concludes that the following methodology can help water utility companies in the timely detection of leaks, saving money, time, and effort. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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15 pages, 7174 KiB  
Article
Establishment and Application of Crowd-Sensing-Based System for Bridge Structural Crack Detection
by Hangming Yuan, Tao Jin and Xiaowei Ye
Appl. Sci. 2023, 13(14), 8281; https://doi.org/10.3390/app13148281 - 18 Jul 2023
Cited by 1 | Viewed by 949
Abstract
The inspection of bridge structural cracks is essential to the structural safety evaluation and could provide reference for preventive maintenance. The traditional bridge structure inspection methods rely heavily on trained engineers with professional equipment. While such kind of way could provide reliable crack [...] Read more.
The inspection of bridge structural cracks is essential to the structural safety evaluation and could provide reference for preventive maintenance. The traditional bridge structure inspection methods rely heavily on trained engineers with professional equipment. While such kind of way could provide reliable crack inspection data, the enormous amount of existing bridges waiting for inspection challenges the efficiency of these methods. Fortunately, the development of smartphones facilitates the possibility of making the pedestrian taking smartphones a mobile sensing node, which is able to collect crack information such as images and locations. At the same time, the booming deep learning methods could offer remarkable crack detection capacity to deal with the crack images automatically. Given this consideration, this paper established a crowd-sensing-based system for bridge structural crack detection. The system was composed of the cloud-based management platform and the mobile based application (APP) for crack information collection. The mobile-based APP was used by the volunteer pedestrians to collect the crack images as well as the locations, and the location accuracy was estimated to be around 5~10 m. Meanwhile, the cloud-based management platform was used for the management of the users and the collected crack information uploaded by all of the volunteers. A deep neural network was used to deal with the crack detection tasks and evaluate the quality of the collected images to see if they could be fitted for crack detection in bridge inspection works. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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16 pages, 4649 KiB  
Article
Research on the Safety Assessment of Corbel Beams of Reservoir Radial Gates Based on Real States
by Jiayi Lin, Ronglu Wang, Yan Zhao and Yuelin Sun
Appl. Sci. 2023, 13(13), 7578; https://doi.org/10.3390/app13137578 - 27 Jun 2023
Viewed by 781
Abstract
The radial gate corbel beam is a kind of gate support structure more often used in large and medium-sized reservoirs, but the current corresponding structural design code does not give a review calculation method for it. Because there are obvious differences between a [...] Read more.
The radial gate corbel beam is a kind of gate support structure more often used in large and medium-sized reservoirs, but the current corresponding structural design code does not give a review calculation method for it. Because there are obvious differences between a corbel and a corbel beam in structural form and force, if the corbel beam is just simplified in the calculation as a corbel structure, it can easily lead to misjudgment of insufficient bearing capacity. This misjudgment has a significant impact on later safety assessment, danger removal, and reinforcement. Currently, there are limited studies available on the internal stress distribution of the corbel beam. In this study, taking the danger removal and reinforcement of the radial gate beam of a medium reservoir in Beijing as an example, the concrete quality of the dam was tested by the core drilling method, and two safety review methods of the corbel beam for different types of reservoirs were proposed in combination with the Code for Design of Hydraulic Concrete Structures (SL191-2008). Then, three different types of calculation model were established by the method of theoretical mechanics calculation and finite element simulation. Combined with the safety test data, the stress state of the combined stress structure of the corbel beam and gate pier under the real state was analyzed and the safety evaluation was carried out. The calculation results of these two corbel beam safety review methods were respectively reduced by 32% and 47% compared with the current calculation method. Engineering practice has proved the rationality of the two safety evaluation methods proposed in this paper, which can provide a certain reference for similar engineering reinforcement. Full article
(This article belongs to the Special Issue Advances in Civil Structural Damage Detection and Health Monitoring)
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