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Cover Image Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-20 Yang Deng, Hanwen Ju, Wenqiang Zhai, Aiqun Li, Youliang Ding
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Issue Information Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-20
No abstract is available for this article.
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Gross outlier removal and fault data recovery for SHM data of dynamic responses by an annihilating filter-based Hankel-structured robust PCA method Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-14 Si-Yi Chen, You-Wu Wang, Yi-Qing Ni
In daily monitoring of structures instrumented with long-term structural health monitoring (SHM) systems, the acquired data is often corrupted with gross outliers due to hardware imperfection and/or electromagnetic interference. These unexpected spikes in data are not unusual and their existence may greatly influence the results of structural health evaluation and lead to false alarms. Hence, there
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Numerical and experimental analysis of the reliability of strain measured by surface-mounted fiber-optic sensors based on Bragg gratings Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-11 Valerii Matveenko, Grigorii Serovaev, Natalia Kosheleva, Andrey Fedorov
The paper considers errors that occur during strain measurement by fiber-optic sensors based on Bragg gratings, which are mounted on the surface of the controlled object with a connecting material. Errors due to the use of the assumption of a uniaxial stress state in the Bragg grating zone in the strains calculation based on the measured physical quantities are considered. The errors associated with
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Robust optimal sensor configuration using the value of information Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-09 Sergio Cantero-Chinchilla, Costas Papadimitriou, Juan Chiachío, Manuel Chiachío, Petros Koumoutsakos, Adriano T. Fabro, Dimitrios Chronopoulos
Sensing is the cornerstone of any functional structural health monitoring technology, with sensor number and placement being a key aspect for reliable monitoring. We introduce for the first time a robust methodology for optimal sensor configuration based on the value of information that accounts for (1) uncertainties from updatable and nonupdatable parameters, (2) variability of the objective function
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Full-scaled experimental and numerical investigation on the contribution of masonry infill walls into dynamic behavior of RC buildings Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-05 Fuat Aras, Tolga Akbaş, Seyit Çeribaşı, Fikret Necati Çatbaş
The contribution of masonry infill walls (MIW) to the dynamic behavior of reinforced concrete (RC) buildings is investigated in this study. An existing non-symmetrical, six-story reinforced concrete building has been used as a test specimen. Dynamic characteristics of the building have been determined by the ambient vibration survey (AVS) first. Then, the masonry infill walls on its ground floor were
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Modal identification and damping performance of a full-scale GFRP-SFRSCC hybrid footbridge Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-03 Vitor Dacol, Elsa Caetano, João R. Correia
Slender footbridges are prone to excessive vibrations due to pedestrian effects, and comfort criteria often govern their design. In this sense, composite materials that combine high damping capacity with relatively high stiffness and low mass can provide functional benefits. This paper presents a study of the dynamic behaviour of an 11 m long hybrid footbridge made of two I-shaped pultruded glass fibre
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Automatic identification of structural modal parameters based on density peaks clustering algorithm Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-03 Xiulin Zhang, Wensong Zhou, Yong Huang, Hui Li
Estimating modal parameters requires significant user interaction, especially when parametric system identification methods are used and the physical modes are selected in the stabilization diagram. In this paper, a fast density peaks clustering algorithm combined with the covariance-driven stochastic subspace identification method is used to automatically identify modal parameters. Before the automatic
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General Tikhonov regularization-based load estimation of bridges considering the computer vision-extracted prior information Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-02 Yixian Li, Limin Sun, Yong Xia, Lanxin Luo, Ao Wang, Xudong Jian
Estimating the load distribution of a bridge structure enables to evaluate the in-service state and predict the structural responses. This paper develops an iterative strategy to inversely estimate the traffic load distribution of a bridge from limited measurements. The computer vision technologies, including the YOLO network-based object detection and a pixel coordinate-based positioning approach
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A generalized extended Kalman particle filter with unknown input for nonlinear system-input identification under non-Gaussian measurement noises Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-11-01 Ying Lei, Junlong Lai, Jinshan Huang, Chengkai Qi
It is necessary to investigate the identification of structural systems and unknown inputs under non-Gaussian measurement noises. In recent years, a few scholars have proposed methods of particle filter (PF) with unknown input for such task. However, these PF with unknown input require that unknown inputs appear in structural measurement equations. Such requirement may not always met, which restrict
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Theoretical analysis on the measurement accuracy of embedded strain sensor in asphalt pavement dynamic response monitoring based on FEM Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-29 Dongdong Han, Guoqiang Liu, Yinfei Xi, Yongli Zhao
Embedded strain sensors are the primary measurement device for strain in the tensile layer of asphalt pavement. The favorable deformation compatibility between embedded strain sensor and asphalt layer is the key to ensure the precise measurement of mechanical response. However, the good deformation coordination may be difficult to maintain under different environments due to the viscoelasticity of
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Active vibration control for high-rise buildings using displacement measurements by image processing Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-27 Tatsuya Ito, Masaharu Tagami, Yasutaka Tagawa
This study aims to develop a high-performance active mass damper (AMD) for super high-rise buildings with a low natural frequency. Conventional AMDs utilize accelerometers to control vibration. However, those AMDs cannot sufficiently damp the vibration because the accelerometer sensitivity is low in a low-frequency band (e.g., the natural frequency of high-rise buildings). Under these circumstances
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Unscented Kalman filter with performance recovery strategy for parameter estimation of isolation structures Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-27 Xinhao He, Shigeki Unjoh, Dan Li
After a strong earthquake, it is crucial to evaluate accurately the health of structures in order to decide whether they can continue to be used. Isolation techniques are well known for enhancing the seismic performance of structures; however, a large response displacement anticipated in the design will likely impact the expansion joints. The occurrence of any damage or impact involves a large disturbance
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Multi-stage superelastic variable stiffness pendulum isolation system for seismic response control of bridges under near-fault earthquakes Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-19 Wenzhi Zheng, Ping Tan, Yanhui Liu, Hao Wang, Huating Chen
To improve the resilient capability of bridges, a novel multi-stage superelastic variable stiffness pendulum isolator (SVSPI) is developed by incorporating superelastic shape memory alloy (SMA) with the multi-stage variable stiffness pendulum isolator (VSPI), which featured with the favorable adaptability under service conditions and near-fault excitations. Based on OpenSees platform, the numerical
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Energy response of a passive variable friction damper and numerical simulation on the control effects for high-rise buildings Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-19 Kazutaka Shirai, Takeshi Sano, Yasumasa Suzui
In this study, the behavior of a passive displacement-dependent variable friction damper (VFD) was evaluated. The energy response behavior of a VFD specimen was investigated by conducting full-scale dynamic loading tests. Full-scale tests demonstrated that the VFD specimen produced a lower sliding force when the device response exceeded a predetermined displacement, resulting in a decreased dissipated
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A negative stiffness dynamic base absorber for seismic retrofitting of residential buildings Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-18 Antonios G. Mantakas, Konstantinos A. Kapasakalis, Antonios E. Alvertos, Ioannis A. Antoniadis, Evangelos J. Sapountzakis
In this study, a negative stiffness-based passive vibration absorber is developed and implemented as a seismic retrofitting measure for typical reinforced concrete (RC) residential buildings. The device, namely, the extended KDamper for retrofitting (EKD-R), is introduced at the base of the structure, between the foundation level and the first story of the building. The design of the EKD-R device and
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Quantitative damage analysis of brick masonry under uniaxial compression and shear using acoustic emission technology Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-18 Guang-Ming Wu, Ruiqing Han, Shengli Li, Pan Guo
Brick masonry structures will suffer different degrees of damage in their long-term service. The common damage modes involve compression and shear damage. The acoustic emission (AE) technology, including improved b-value (Ib-value), signal intensity analysis, and the k-means clustering method, was carried out during uniaxial compression and shear experiments to qualitatively and quantitatively assess
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An output-only structural condition assessment method for civil structures by the stochastic gradient descent method Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-17 Ping-He Ni, Xiao-Wei Ye, Yang Ding
The interesting to assess the condition of a structure with structural health monitoring data has gained many attentions. Most of the existing methods require the measurement at the force location. This paper presents a novel output-only condition assessment method that does not require measurement at the force location. The unknown structural damage indices and input force can be identified with the
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Detection of the instantaneous frequency degradation due to damages of a fixed offshore jacket platform using the iEEMD-based Hilbert Huang transform under a wave excitation Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-17 Nguyen Thanh Trung, Nguyen Huu Hung, Thai Thi Kim Chi, Nguyen Duc Thi Thu Dinh, Bui Ngoc Dung, Vu Dan Chinh
In online structural health monitoring of the fixed offshore jacket platform, the determination of the time-dependent degradation of structures due to damages is the most important step in a maintenance strategy. This paper presents the application of the Hilbert Huang transform method based on the iEEMD (improved ensemble empirical mode decomposition) algorithm to identify the instantaneous natural
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Experimental and numerical investigation on the temperature distribution of composite box-girders with corrugated steel webs Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-17 Shiji Huang, Chenzhi Cai, Yunfeng Zou, Xuhui He, Tieming Zhou, Xiaojie Zhu
Although composite box-girders with corrugated steel webs have been widely applied in practical bridge constructions, the nonuniform temperature field in the composite box-girders without sufficient study may lead to negative effects on the durability of bridge structures. Thus, this paper focuses on the temperature distribution characteristics of the composite box-girder with corrugated steel webs
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Monitoring onsite-temperature prediction error for condition monitoring of civil infrastructures Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-13 Mohsen Mousavi, Amir H. Gandomi, Magd Abdel Wahab, Branko Glisic
An inverse input–output method is proposed for long-term condition monitoring of civil infrastructures through monitoring the prediction error of air temperature recorded at the site of a structure. It is known that structural natural frequencies are affected by temperature. Hence, the proposed method considers the structural natural frequencies as input and temperature as output to train a machine
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Cover Image Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-11 Jiangpeng Shu, Wei Ding, Jiawei Zhang, Fangzheng Lin, Yuanfeng Duan
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Additional Cover Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-11 Zhuodong Yang, Linsheng Huo, Jingkai Wang, Jing Zhou, Xiaoyu Bai
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Issue Information Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-11
No abstract is available for this article.
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Long-lasting phosphorescent microcapsules based on in-situ polymerization method for damage sensing Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-12 Haohui Zhang, Yao Li, Qing Wang, Yayun Zhao
In this paper, a long-lasting phosphorescent microcapsule based on in-situ polymerization method is proposed for damage sensing. The successful microencapsulation of core material was evaluated by a Fourier transform infrared spectrometer and an energy dispersive spectrometer. The results demonstrated that the long-lasting phosphorescent microcapsules prepared with urea-formaldehyde resin shell can
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A new sensorized ceramic plug for the remote monitoring of moisture in historic masonry walls: First results from laboratory and onsite testing Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-12 Elisa Franzoni, Mattia Bassi
The presence of moisture in historic buildings, especially from rising damp, is extremely widespread and severe, causing materials' deterioration, internal discomfort and bad thermal insulation of external walls. Although this phenomenon is widely studied in the literature, the available solutions are frequently only partially effective, also due to the lack of reliable and compatible techniques to
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Enhancing tunability of liquid storage tanks to function as deep tuned liquid dampers by use of a submerged stretched membrane Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-11 Tanmoy Konar, Anupam Das, Aparna (Dey) Ghosh
This is a study on a deep, liquid-containing tank, such as an overhead water tank on a building, with a vertically submerged stretched membrane (SSM). Here, instead of the sloshing mode, which can become detuned and also affords a low damper mass ratio, the impulsive liquid–membrane interacting system is designed to serve as a dynamic vibration absorber. The requirement of tuning the frequency of the
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Identification of gradually varying physical parameters based on discrete cosine transform using partial measurements Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-09 Ning Yang, Ying Lei, Jun Li, Hong Hao
Structural physical parameters often vary gradually due to the degradation of material properties or effects of environment. In this paper, two novel approaches are proposed to identify the gradually varying physical parameters based on the discrete cosine transform (DCT) using partial measurements of structural responses. Approach I is proposed for the circumstance of known excitations. The gradually
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Cable vibration mitigation by using an H-bridge-based electromagnetic inerter damper with energy harvesting function Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-08 Jin-Yang LI, Songye Zhu
The mitigation of bridge cable vibration has long been a research hotspot with substantial developments contributed to the field. In addition to vibration control, a recent development trend incorporates auxiliary sensors, local computing modules, and data transmission devices to establish a comprehensive, integrated cable control and health monitoring system, which requires external energy input.
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Correlation model of deflection, vehicle load, and temperature for in-service bridge using deep learning and structural health monitoring Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-07 Yang Deng, Hanwen Ju, Wenqiang Zhai, Aiqun Li, Youliang Ding
Deflection is an important issue in bridge structural health monitoring. An accurate deflection–vehicle load–temperature correlation model is critical to abnormal data identification, deflection prediction under extreme conditions, and bridge structural assessment. However, because of the discrete distribution in time domain of vehicle load and the extreme complexity of the deflection–vehicle load–temperature
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Shaking table substructure test of tuned liquid damper for controlling earthquake response of structure Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-07 Guoshan Xu, Lichang Zheng, Yintong Bao
For precisely disclosing the seismic performance of tuned liquid damper (TLD) vibration control structures, the shaking table substructure test (STST) method is presented and experimentally validated, and the parametric effects on the reduction efficiency of TLD are further investigated by using the STST method in this paper. Firstly, one optimal design method of TLD for high-rise structures is presented
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Shaking table test on single-story rocking-column steel frame under excitations along strong axis Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-07 Liang-Jiu Jia, Kui Fan, Ping Xiang, Guanqing Song, Zhuofeng Li
A single-story controlled rocking-column steel frame with self-centering frictional connections is proposed in this paper. The frame is designed to rock when subjected to excitations beyond the frequent earthquake level. A shaking table test is conducted on a 1/3 scaled single-story rocking-column steel frame to investigate its dynamic responses under excitations along strong-axis direction of the
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Post-earthquake damage recognition and condition assessment of bridges using UAV integrated with deep learning approach Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-07 Xiao-Wei Ye, Si-Yuan Ma, Zhi-Xiong Liu, Yang Ding, Zhe-Xun Li, Tao Jin
Rapid and accurate assessment of the damage to bridge structures after an earthquake can provide a basis for decision-making regarding post-earthquake emergency work. However, the traditional structural damage inspection techniques are subjective, time-consuming, and inefficient. This paper proposed a framework for rapid post-earthquake structural damage inspection and condition assessment by integrating
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An ultrasonic wave-based framework for imaging internal cracks in concrete Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Sai Teja Kuchipudi, Debdutta Ghosh
Nondestructive detection and sizing of internal cracks initiated in reinforced concrete have been critical problems. Geometric characterization of internal cracks and delaminations contributes to predicting their propagation path and failure pattern followed by structural prognostics. There have been limited studies on quantitative detection and characterization of vertical cracks in concrete using
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Application of constrained unscented Kalman filter (CUKF) for system identification of coupled hysteresis under bidirectional excitation Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Shivam Ojha, Nur M. M. Kalimullah, Amit Shelke
System identification is primarily studied for unidirectional excitation using the Bouc–Wen model, neglecting the torsional coupling, even though real structure experiences multidirectional seismic excitation. Moreover, the high damping rubber bearings exhibit bidirectional effects, thereby requiring coupled biaxial Bouc–Wen (BBW) model and demand the estimation of model parameters for structural health
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Semi-active adaptive control of stay cable vibrations using MR dampers Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Majd Javanbakht, Shaohong Cheng, Faouzi Ghrib
Among various countermeasures for suppressing bridge stay cable vibrations, installation of external dampers near the lower cable end is the most common practice. Compared to the limitations of passive dampers, especially when attached to superlong cables, semi-active magneto-rheological (MR) dampers operated by smart controllers manifest superior control performance. In this study, an adaptive output-only
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Data-driven nonlinear autoregressive with external input model-based compensation for real-time testing Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Weijie Xu, Cheng Chen, Xiaoshu Gao, Menghui Chen, Tong Guo, Changle Peng
Actuator control plays an important role for real-time testing based experimental techniques such as real-time hybrid simulation (RTHS). Accurate modeling of actuator dynamics can be challenging due to the complexity and nonlinearity of the servo-hydraulic system. In this study, nonlinear autoregressive with external input (NARX) modeling is introduced to emulate the servo-hydraulic dynamics. The command
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Three-dimensional deformation measurement of aero-engine high-speed rotating blade surface based on stroboscopic structure digital image correlation method Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Huilin Wu, Chuanzhi Sun, Zhenjiang Yu, Yingjie Mei, Xiaoming Wang, Huiping Ma, Limin Zou, Yongmeng Liu, Jiubin Tan
Under the working conditions of aero-engine, the three-dimensional composite deformation of the blade is caused by the centrifugal force generated by high-speed rotation and the load generated by gas scouring. Aiming at the problem of three-dimensional composite deformation on the surface of aero-engine blades under high-speed rotation, a three-dimensional deformation measurement method based on stroboscopic
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Equal modal damping-based optimal design of a grounded tuned mass-damper-inerter for flexible structures Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Bei Chen, Zili Zhang, Xugang Hua
For design of tuned mass-damper-inerter (TMDI) in flexible multi-degrees-of-freedom (MDOF) structures, the classic 2-DOF model is incapable of accounting for the background flexibility that comes from non-resonant modes, leading to an unbalance in the frequency response of the flexible structure-TMDI system. This becomes more critical for the grounded TMDI attached to a lower floor (a practical installation
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Long-term bridge performance assessment using clustering and Bayesian linear regression for vehicle load and strain mapping model Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-05 Xiaonan Zhang, Youliang Ding, Hanwei Zhao, Letian Yi
The weigh-in-motion (WIM) system and the structural health monitoring (SHM) system have been used as two separate modules playing different roles in bridge operation and providing different information for bridge maintenance. This study proposes a novel bridge safety condition assessment method that utilizes long-term monitoring data from the WIM system and the SHM system. The method uses the slope
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Nonlinear ultrasonic evaluation of damaged concrete based on mixed harmonic generation Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-04 Mohammed Aslam, Praveen Nagarajan, Mini Remanan
Nonlinear wave mixing provides a potential method to evaluate localized micro-damage in structures. The wave mixing technique has some unique advantages over the nonlinear ultrasonic technique based on the higher harmonic generation, such as frequency selectivity, which can separate harmonic components generated due to instrumentation. In this paper, we numerically studied the frequency mixing response
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A band-limited reliability-based robust multimodal optimization of tuned mass dampers Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-10-01 Elyes Mrabet, Mohamed Hechmi El Ouni, Nabil Ben Kahla
Vibrations' mitigation of linear structures, subjected to random excitations, using linear tuned mass dampers (TMDs), has been widely adopted in the field of structural dynamics. Although the TMDs are reliable and constitute a very efficient low-cost solution, their dynamic parameters should be carefully tuned in order to guarantee optimal performances. Several optimization methods can be used such
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Deep learning-based super-resolution with feature coordinators preservation for vision-based measurement Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-30 Lijun Wu, Yajin Wang, Xufeng Lin, Zhicong Chen, Qiao Zheng, Shuying Cheng, Peijie Lin
Vision-based displacement measurement is promising and emerging for structural monitoring. However, the accuracy of visual measurement is commonly limited by the resolution of the camera. The super-resolution (SR) technique can reconstruct high-resolution images from the corresponding low-resolution images within the constraints of prior knowledge. Existing SR algorithms mainly focus on improving the
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Development of a novel shape memory alloy-based self-centering precast segmental concrete column Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-29 Zhi-Peng Chen, Songye Zhu
This study proposes a novel shape memory alloy (SMA)-based self-centering (SC) precast segmental concrete column (PSCC). The entire structural system, called SSC-PSCC, can be constructed via off-site precasting followed by on-site assembly. By using connecting SMA bolts and steel angles, wherein SMA and steel elements contribute to SC and energy dissipation (ED) capacities, respectively, SSC-PSCC is
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An inerter-enhanced asymmetric nonlinear energy sink for response mitigation of structures subjected to harmonic and seismic ground excitations Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-29 Jingjing Wang, Chao Zhang, Yuqiang Zheng
To improve the applicability of mass dampers in control problems facing different types of uncertainties, asymmetric nonlinear energy sink-inerters (ANESIs) are proposed. Previous studies reveal that ANESIs have excellent control effect in mitigating impulsive responses but only briefly touch upon their seismic application. This study is intended to provide better understanding in this regard by analyzing
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Structural damage detection of old ADA steel truss bridge using vibration data Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-26 Ali A. Al-Ghalib
This study proposes a statistical-based detection method that is responsive to damage and not to environmental and operational conditions. The method serves as a damage recognition system for structural health monitoring using field measurements from real bridges. Vehicle-induced bridge and ambient vibration measurements collected from the benchmark Old ADA steel truss bridge situated in Japan were
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Noncontact dynamic displacements measurements for structural identification using a multi-channel Lidar Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-26 Jaehun Lee, Robin Eunju Kim
Identifying fundamental characteristics of a structure provide key information for structural health monitoring (SHM). To date, numerous researchers have reported tools and algorithms that can perform system identification, with a large portion of their application being contact-based sensors. Although dynamic responses of structures can be directly measured from contact-based sensors, the lifespan
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Anomaly detection in rolling bearings based on the Mel-frequency cepstrum coefficient and masked autoencoder for distribution estimation Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-25 Suchao Xie, Runda Liu, Leilei Du, Hongchuang Tan
It is difficult to establish a classification and recognition model of machinery and equipment based on labeled samples in the actual industrial environment because of the imperfect fault modes and data missing. To solve this problem, a semisupervised anomaly detection method based on masked autoencoders of distribution estimation (MADE) is designed. First, the Mel-frequency cepstrum coefficient (MFCC)
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Analytical computation of the dominant dispersion trend of Lamb waves in plate-like structures with an improved dynamic stiffness matrix method Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-23 Shibin Lin, Jeramy Ashlock, Sadegh Shams, Fan Shi, Yujin Wang
Lamb waves have infinite number dispersion modes; however, no every mode is excitable and detectable. Traditional matrix methods can calculate the dispersion curve of each mode over the full range of possible frequencies. However, the resulting numerically calculated multimodal dispersion curves do not fully represent the dispersion curves measured in real experiments, which are most often dominated
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Real-time corrosion monitoring of an ultra-high performance fibre-reinforced concrete offshore raft by using an autonomous sensor system Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-23 José E. Ramón, José M. Gandía-Romero, Román Bataller, Juan A. López, Manuel Valcuende, Juan Soto
The excellent high-durability features of ultra-high performance fibre-reinforced concrete (UHPFRC) have been verified in laboratory studies, but its performance under service conditions are being studied. Indeed, structural health monitoring (SHM) can be considered an efficient strategy to assess built structures in which concrete matrix performance differs from that those found when assessing laboratory
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Feasibility study of percussion–acoustic-based void identification for underwater concrete Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-21 Zhuodong Yang, Linsheng Huo, Jingkai Wang, Jing Zhou, Xiaoyu Bai
Concrete has been widely used in underwater structures. However, accidental voids near the concrete protective layer may weaken the bearing capacity of the structures and can even lead to severe disasters. Therefore, it is necessary to develop an efficient and convenient method for quantitatively identifying voids in concrete and guaranteeing structural safety. A percussion–acoustic method is commonly
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Temporal convolution network-based time frequency domain integrated model of multiple arch dam deformation and quantification of the load impact Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-21 Xin Wu, Dong-Jian Zheng, Yong-Tao Liu, Zhuo-Yan Chen, Xing-Qiao Chen
Deformation is an intuitive reflection of the safety status of a dam. The construction of a dam deformation prediction model can predict the deformation and interpret the effects of environmental loads. The current research mainly focuses on the predictive ability of the model and rarely involves the interpretation of the load impact on deformation. Meanwhile, the selection of the model factors, such
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Vision-based displacement measurement using a camera mounted on a structure with stationary background targets outside the structure Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-20 Yunwoo Lee, Geonhee Lee, Do Soo Moon, Hyungchul Yoon
While structural displacements are essential information for structural health monitoring, they are not being widely used in practice due to the inconvenience. Recently, vision-based displacement measurement methods have been introduced, which are more convenient and cost effective. However, vision-based methods have generally not been used primarily for the continuous monitoring of structures, due
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Transverse deformational behaviors of segmental lining during shield tunneling: A case study Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-20 Jiaqi Chang, Hongwei Huang, Dongming Zhang, Huiming Wu, Jingya Yan
In order to better understand the deformational behaviors of lining segments during shield tunneling, a case study of the real-time monitoring on the deformation of a constructing shield tunnel in Shanghai by using the wireless sensor network (WSN) is presented. Eight tilt WSN nodes are installed on two rings with monitoring frequency of 10 min right after the erection of the rings. The nodes monitor
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Investigation on high-order resonant electromagnetic shunt dampers for vibration control: Methodology and optimum tuning Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-16 Shaoyi Zhou, Bin Bao
This paper develops linear high-order electromagnetic shunt damping techniques, which offer enhanced effectiveness without sacrificing the structural simplicity and the ease of practical implementation. Inspired by the state-of-the-art vibration control techniques involving the inerter, this paper proposes three high-order resonant electromagnetic shunt dampers, which are analogous to three distinct
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Continual-learning-based framework for structural damage recognition Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-14 Jiangpeng Shu, Wei Ding, Jiawei Zhang, Fangzheng Lin, Yuanfeng Duan
Existing convolutional neural network (CNN)-based methods have limitations in long-term multi-damage recognition for civil infrastructures. Owing to catastrophic forgetting, the recognition accuracy of such networks decreases when structural damage types keep increasing progressively, not to mention other issues such as an increased number of model parameters and data storage. Thus, this study proposes
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Cover Image Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-13 Yitian Han, Gang Wu, Dongming Feng
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Cover Image Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-13 Xuan Liu, Hua-Ping Wan, Yaozhi Luo, Chao Yang
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Issue Information Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-13
No abstract is available for this article.
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An integrated equivalent tuned-mass-inerter vibration absorber and its optimal design Struct. Control Health Monit. (IF 5.4) Pub Date : 2022-09-11 Kaoshan Dai, Jiawei Tang, Songhan Zhang
Inerters have been widely used in the vibration suppression of automobile and civil structures, due to its large capability in kinetic energy. When applying inerters at the free end of a structure, additional lumped mass has to be involved for obtaining the driving force, which may not be beneficial to the integrity of the device. In this paper, an integrated equivalent tuned mass damper with inerter