Comparative assessment of mechanical properties of HPS between electrochemical corrosion and spray corrosion

Xiao, Linfa; Peng, Jiawei; Zhang, Jianren; Ma, Yafei; Cai, C.S.

doi:10.1016/j.conbuildmat.2019.117735

Cited by 69 publications

(27 citation statements)

References 32 publications

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“…In recent years, with the increasing demands for structural-damage detection [17,18], structural health monitoring (SHM) has rapidly advanced [19,20], and piezoelectric transducers are widely used in structural health and damage detection [21,22]. They have low cost, broadband-frequency response [23][24][25], energy-harvesting capacity [26,27] and the ability to function as both actuators and sensors [28,29].…”

Section: Piezoelectric Transducers and Active Sensing Based On Piezoementioning

confidence: 99%

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Zhong

Xiong

2020

Sensors

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This paper developed a piezoelectric-transducer-based damage detection of concrete materials after blasting. Two specimens (with or without an energy-relieving structure) were subjected to a 40 m deep-underwater blasting load in an underwater-explosion vessel, and their damage was detected by a multifunctional piezoelectric-signal-monitoring and -analysis system before and after the explosion. Statistical-data analysis of the piezoelectric signals revealed four zones: crushing, fracture, damage, and safe zones. The signal energy was analyzed and calculated by wavelet-packet analysis, and the blasting-damage index was obtained after the concrete specimen was subjected to the impact load of the underwater explosion. The damage of the two specimens gradually decreased from the blast hole to the bottom of the specimen. The damage index of the specimen with the energy-relieving structure differed for the fracture area and the damage area, and the damage protection of the energy-relieving structure was prominent at the bottom of the specimen. The piezoelectric-transducer-based damage monitoring of concrete materials is sensitive to underwater blasting, and with wavelet-packet-energy analysis, it can be used for postblasting damage detection and the evaluation of concrete materials.

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Section: Piezoelectric Transducers and Active Sensing Based On Piezoementioning

confidence: 99%

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Zhong

Xiong

2020

Sensors

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“…Civil infrastructures are often operated in environments with adverse factors, such as corrosion [1,2], vibration and fatigue [3,4], impacts [5][6][7][8], seismic excitations [9][10][11], strong wind or hurricane [12], among others, and these adverse factors often result in component and/or structural damages, which should be detected and repaired in time to prevent catastrophic events from happening [13]. Structural health monitoring (SHM) [13,14] and damage detection [14][15][16][17][18] and structural retrofit and repair [19,20] have been developed to address these two issues.…”

Section: Introductionmentioning

confidence: 99%

Uniaxial Compressive Behavior of Concrete Columns Confined with Superelastic Shape Memory Alloy Wires

2020

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Superelastic shape memory alloy (SMA) exhibits the ability to undergo large deformations before reverting back to its undeformed shape following the removal of the load. This unique property underlies its great potential in the seismic design and retrofitting of structure members. In this paper, superelastic SMA wires were utilized to confine concrete cylinders to enhance their axial compressive behavior. The axial carrying and deformation capacities of SMA-confined concrete cylinders are assessed by uniaxial compression testing on a total of eight SMA-confined concrete columns and one unconfined column. The influence of the amount of SMA and the prestrain level of SMA wires, as well as the reinforcing mode, on the axial carrying and deformation capacity of confined concrete columns were considered. The analysis focuses on the axial carrying capacity and deformation performance of concrete columns reinforced with superelastic SMA under different loading conditions. Based on the experimental data and analysis results, it is found that superelastic SMA wires can increase the axial loading capacity and enhance deformation performance of concrete columns. Under the same loading condition, the ultimate bearing capacity of SMA-confined concrete columns increases as the increasing of the amount of SMA wire. The results of this study verify the effectiveness of superelastic SMA in enhancing the loading capacity and deformation behavior of concrete cylinders.

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“…To mitigate the disadvantages of low tensile strength, concrete are often reinforced with steel bars to form the reinforced concrete (RC) or integrated with more sophisticated forms, such as tubes, to form the concrete filled steel tubes (CFST) (Chen et al, 2019; Li et al, 2019a) or plates, to form the steel-plate concrete composite structures (Kong et al, 2018; Qin et al, 2015), to achieve improved performance by combining the advantages of concrete and steel. Like many other civil structures, concrete structures are often deployed in environment with severe service conditions, and are exposed to corrosion (Li et al, 2017; Peng et al, 2019a; Xiao et al, 2020), vibrations (Wang et al, 2019; Yin et al, 2019), impacts (Zhu et al, 2017), and seismic loads (Ahmad et al, 2019). These adverse factors may cause damages to the concrete structures, and a common form of the damages is a crack, which will reduce the bending stiffness of the structure (Peng et al, 2019b; Qi et al, 2018) and even cause the loss of the load carrying capacity of the structure, which may result in the eventual structural failure.…”

Section: Introductionmentioning

confidence: 99%

Attenuation characteristics of stress wave in cracked concrete beam using smart aggregate transducers enabled time-reversal technique

Zhou

Zheng

et al. 2020

Journal of Intelligent Material Systems and Structures

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Piezoelectric enabled stress wave methods for concrete structural health monitoring have been widely researched. However, the attenuation characteristics of stress wave in cracked concrete structures have barely been studied. As a result, it is hard to quantify the damage levels of the concrete structure. In this paper, the attenuation characteristics of stress wave in cracked concrete beam are studied using stress wave with the time-reversal technique. The attenuation model of stress waves related to the focused signal amplitude and the total crack width of concrete beam is proposed. In this study, a series of 18 concrete beams were tested using a four-point loading. During the test procedure, the signals of stress wave from the piezoelectric smart aggregate transducers in all the test specimens were collected to facilitate the proposed model. The test data of 12 beams are used to determine the attenuation coefficient of stress wave per unit crack width, and the test data of the other six beams are used to validate the accuracy of the proposed attenuation model. The results indicate that the prediction results based on the stress wave attenuation model are in good agreement with the test results of cracked concrete beams.

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Comparative assessment of mechanical properties of HPS between electrochemical corrosion and spray corrosion

Cited by 69 publications

References 32 publications

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Uniaxial Compressive Behavior of Concrete Columns Confined with Superelastic Shape Memory Alloy Wires

Attenuation characteristics of stress wave in cracked concrete beam using smart aggregate transducers enabled time-reversal technique

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