Research on Damage Detection of a 3D Steel Frame Model Using Smartphones

Xie, Botao; Li, Jie; Zhao, Xuefeng

doi:10.3390/s19030745

Cited by 20 publications

(17 citation statements)

References 35 publications

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“…A study demonstrated the feasibility of using smartphones to monitor the response of a building structure subjected to extreme events, such as earthquakes. The importance of carrying out a practical study to validate the application was also stressed [7]. For this reason, it is important that the inventiveness of such applications starts in basic education.…”

Section: Resultsmentioning

confidence: 99%

“…Another disadvantage of transferring vibrations to the support base is that the mass and elasticity of the base have an effect on the frequency of oscillation, which can cause an undesirable change in frequency and smartphones can also be used to monitor this condition. by measuring threedimensional acceleration in a given space and biaxial displacement in a given plane [7].…”

Section: Introductionmentioning

confidence: 99%

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Use of Smartphone Applications in Vibration Analysis : Critical Review

Silva¹

2020

IJETAE

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Introduction: The use of vibration analysis in the industry has become more and more frequent and has become a powerful tool to guarantee the reliability of machines and equipment. Something that has been noticed, however, is that this technique is restricted to a minority of companies due to the high cost of equipment and specialized labour. Objective: to gather and define a systematic, objective and practical way as main characteristics of the analysis of vibrations by means of smartphones and to propose the possibility of new applications both in the industry and in the mandatory education to popularize it. Methods: A bibliographic search was performed with the search for the term "vibration analysis smartphone apps". Studies with titles not directly related to the research topic, older studies and studies that relate repeated strategies were excluded. Results: It is possible to identify resonance problems, vibration limit violations. Very easy to use and low cost. Conclusion: The use in the academic environment from basic education to higher education is possible due to the simplicity of handling which would make the practice more popular. For application in the industry it is possible to use external sensors and the results from the smartphone. The results found open up several interesting questions for future research. First, it is possible to improve applications as new technologies are developed on smartphones. Second, it is possible to make the technique popular by including its teaching in basic education.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of Smartphone Applications in Vibration Analysis : Critical Review

Silva¹

2020

IJETAE

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“…Aiming to decrease monitoring costs and enable public participation, the application quantity of using smartphones in SHM is increasing fast. These applications include pedestrian link bridge vibration monitoring [24], in-plane displacement monitoring [25], three-dimension steel frame model damage detection [26], three-dimension displacement monitoring [27], building dynamic characteristics monitoring [28,29], bridge seismic monitoring [30]. Among these applications, the following three applications used smartphones to monitor displacement.…”

Section: Introductionmentioning

confidence: 99%

“…Zhao et al [25] used a smartphone and a laser point to monitor displacement in the laboratory and verify the feasibility of an app called D-Viewer. Xie et al [26] used this method to record the displacement history of a shaking table test of a three-dimensional steel frame. Wang et al [27] developed this method and made this App be able to monitor the out-of-plane displacement.…”

Section: Introductionmentioning

confidence: 99%

A Method of Interstory Drift Monitoring Using a Smartphone and a Laser Device

Xie

Zhao

2020

Sensors

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Interstory drift is an important engineering parameter in building design and building structural health monitoring. However, many problems exist in current interstory drift monitoring methods. The traditional method is imprecise—double numerical integration of acceleration data—and other direct monitoring methods need professional equipment. This paper proposes a method to solve these problems by monitoring the interstory drift with a smartphone and a laser device. In this method, a laser device is installed on the ceiling while a smartphone is fixed on a steel projection plate on the floor. Compared with a reference sensor, the method designed in this study shows that a smartphone is competent in monitoring the interstory drift. This method utilizes a smartphone application (APP) named D-Viewer to implement monitoring and data storage just in one place, which is also inexpensive. The results showed that this method has an average percent error of 3.37%, with a standard deviation of 2.67%. With the popularization of the smartphone, this method is promising in acquiring large amounts of data, which will be significant for building assessment after an earthquake.

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“…Li et al [ 8 ] utilized the camera of smartphone to measure the interstory drift of building structures during earthquakes. Xie et al [ 9 ] conducted an experiment to verify the feasibility of using smartphones to perform structural damage detection of a 3-D steel frame structure. Matarazzo et al [ 10 ] and Ozer et al [ 11 ] proposed to use smartphones to identify the bridge’s modal frequencies, which provides a low-cost and efficient method to collect the structural health condition data of the bridges.…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of Android Smartphone Based Wireless Structural Vibration Monitoring System

Zhang

Tian

2020

Sensors

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Vibration monitoring is one of crucial functions of structural health monitoring (SHM) systems. Traditional structural vibration monitoring usually relies on specialized sensors, data transmission and acquisition equipment, which are expensive and may not be easily available in urgently needed situations like post-disaster structural evaluation. Therefore, developing an affordable and efficient structural vibration monitoring technique becomes an important topic in SHM research. In this paper, the authors developed an android system APP that can easily convert multiple android smartphones into a wireless structural vibration monitoring system. To make the designed system reliable and easy to use, the server/client architecture is adopted. One smartphone is designated as the serve of the system to remotely control all other smartphones, which function as sensors to measure structural vibration. An efficient method is proposed herein to establish the smartphone-based structural vibration monitoring network, allowing the server smartphone to quickly and easily connect multiple sensor smartphones to form the wireless network for structural vibration monitoring. Additionally, a synchronization method is also proposed to synchronize different smartphones for simultaneously measuring structural vibration. To verify the time synchronization accuracy of the developed system, an experiment is designed and conducted. Moreover, a new analysis method of the time synchronization accuracy is also proposed, which verifies that the designed smartphone-based monitoring can achieve the millisecond-level time synchronization accuracy. Finally, a shaking table experiment is conducted on a three-story bench-scale structural model, the results of which demonstrate that the designed smartphone-based wireless structural vibration monitoring system can quite accurately identify the modal parameters of the tested structure.

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Research on Damage Detection of a 3D Steel Frame Model Using Smartphones

Cited by 20 publications

References 35 publications

Use of Smartphone Applications in Vibration Analysis : Critical Review

Use of Smartphone Applications in Vibration Analysis : Critical Review

A Method of Interstory Drift Monitoring Using a Smartphone and a Laser Device

Design and Validation of Android Smartphone Based Wireless Structural Vibration Monitoring System

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