Structural Damage Detection and Health Monitoring

Song, Gangbing; Ho, Siu Chun Michael; Kong, Qingzhao

doi:10.3390/app9194027

Cited by 2 publications

(1 citation statement)

References 69 publications

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“…Non-destructive testing (NDT) methods are widely used in practical engineering to detect damage degree of the civil engineering structures. NDT is to evaluate the health state of the structures and to determine whether the structure meets the actual requirements through the test results obtained non-destructively [10][11][12]. In practical engineering, the commonly used methods for monitoring grouting quality of prestressed tendon ducts include ground penetrating radar (GPR), core sampling, ultrasonic, and impact echo (IE), among others [13].…”

Section: Introductionmentioning

confidence: 99%

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Jiang

Zhang

et al. 2020

Sensors

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To understand the characteristics of longitudinal grouting quality, this paper developed a stress wave-based active sensing method using piezoceramic transducers to detect longitudinal grouting quality of the prestressed curved tendon ducts. There were four lead zirconate titanate (PZT) transducers installed in the same longitudinal plane. One of them, mounted on the bottom of the curved tendon duct, was called as an actuator for generating stress waves. The other three, pasted on the top of the curved tendon duct, were called as sensors for detecting the wave responses. The experimental process was divided into five states during the grouting, which included 0%, 50%, 75%, 90%, and 100% grouting. The voltage signals, power spectral density (PSD) energy and wavelet packet energy were adopted in this research. Experimental results showed that all the amplitudes of the above analysis indicators were small before the grouting reached 90%. Only when the grouting degree reached the 100% grouting, these parameters increased significantly. The results of different longitudinal PZT sensors were mainly determined by the distance from the generator, the position of grouting holes, and the fluidity of grouting materials. These results showed the longitudinal grouting quality can be effectively evaluated by analyzing the difference between the signals received by the PZT transducers in the curved tendon duct. The devised method has certain application value in detecting the longitudinal grouting quality of prestressed curved tendon duct.

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Section: Introductionmentioning

confidence: 99%

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Jiang

Zhang

et al. 2020

Sensors

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Vibration control of an irregular structure using single and multiple tuned mass dampers

Khan

Usman

Tanveer

2023

Proceedings of the Institution of Civil Engineers - Structures

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The tuned mass damper is a passive control technique, which is used in high-rise building structures for mitigation of the vibration produced as a result of wind and earthquake loadings. Irregularity in structure increases the chances of vibrations produced from these loadings. In this paper, detailed experimental work was carried out for vibration mitigation of an irregular four-storey structure having mass irregularity at its fourth floor using a single tuned mass damper (STMD) and multiple tuned mass dampers (MTMDs), against different harmonic and seismic loadings; such work has never been carried out before. The positions of STMD and MTMDs were varied along each floor and all possible configurations of STMD and MTMDs were tested against these loadings. For comparison, the acceleration responses of each storey for all configurations of STMD and MTMDs were compared with that of the uncontrolled structure. It was found that under all types of loadings, the STMD reduces the acceleration response of all floors of the uncontrolled structure; similarly, all configurations of MTMDs show further reduction in acceleration response, demonstrating the efficiency of MTMDs over a STMD in irregular structures.

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Structural Damage Detection and Health Monitoring

Abstract: Readers who have recently visited or purchased a newly built house may have started to notice the standard inclusion of “smart home” technologies [...]

Cited by 2 publications

References 69 publications

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Vibration control of an irregular structure using single and multiple tuned mass dampers

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