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Zeitschriftenartikel zum Thema „Displacement damages“

Autor: Grafiati

Veröffentlicht am 16. November 2024

Zuletzt aktualisiert am 31. Juli 2025

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1

Zhu, Jia Wei, Dan Ting Zhou, and Qiu Wei Yang. "Damage Localization for a Continuous Beam by the Displacement Variation." Applied Mechanics and Materials 744-746 (March 2015): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.366.

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Using the static displacement data, this paper presented a damage localization method for a continuous beam. This method is based on the estimation of changes in the static displacements of the structure. The most significant advantage of the method is that it does not require development of an analytical model of the structure being tested. All predictions are made directly from the measurments taken on the structure. The efficiency of the proposed method is demonstrated using simulated data of a three-span continuous beam. The results showed that the region in which the displacement variatio

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Hu, Chen, and Ke Ding. "Thin Plate Damage Analysis Based on Transient Displacement Response." Academic Journal of Science and Technology 15, no. 1 (2025): 249–58. https://doi.org/10.54097/v2k3e487.

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This study systematically simulates and analyzes the dynamic response of a thin plate structure under different damage conditions based on a transient model, aiming to evaluate the performance of Wave Atom transform, wavelet packet transform, and Curvelet transform in damage detection. By applying random initial displacement excitations to the thin plate structure and using optimized load step settings, the impact of different damage severities, damage ranges, boundary damage, and damage spacing on the dynamic response of the structure is analyzed. The results show that both Wave Atom and Curv

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3

Tiongson, Samuel Francisco, and Ryan Ramirez. "Mapping of ground surface deformations and its associated damage using SAR interferometry: a case study of the 2020 Masbate earthquake." E3S Web of Conferences 347 (2022): 03014. http://dx.doi.org/10.1051/e3sconf/202234703014.

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The 2020 Masbate earthquake in the Philippines, with a moment magnitude 6.6, occurred on August 18, 2020. The earthquake dealt considerable damage to the surrounding areas. This study uses Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR) to investigate earthquake-induced damages. Conventional repeat-pass InSAR is used to quantify the ground surface displacement along the radar line-of-sight (LOS). The InSAR technique shows ground surface displacements greater than 15 cm. This study also implements a two-step coherence difference analysis coupled with a statistical temporal coherence

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4

Xiao, Feng, Weiwei Zhu, Xiangwei Meng, and Gang S. Chen. "Parameter Identification of Frame Structures by considering Shear Deformation." International Journal of Distributed Sensor Networks 2023 (August 16, 2023): 1–12. http://dx.doi.org/10.1155/2023/6631716.

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This paper presents a method to identify the damages in frame structures with slender beams. This method adjusts the parameters of the structure to match the analytical and the measured displacements. The effect of transverse shear deformation on the nodal analytical displacement is analyzed, and the parameter identification of frame structures with slender beams is performed. The results demonstrate that parameter-identification accuracy can be considerably improved by considering the transverse shear deformation in the frame structure with slender beams. The proposed method can accurately id

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Li, Cui Hong, Qiu Wei Yang, and Xue Shen. "Damage Detection for Cantilever Beam Structures Using Two-Stage Method." Applied Mechanics and Materials 351-352 (August 2013): 1084–87. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1084.

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This paper presents a two-stage method for damage identification in cantilever beam structures using the incomplete measured static and dynamic paramenters. The first stage locates damages preliminary by using the static displacement changes, which is obtained by the static test of structure. It has been shown that the point from which the static displacement difference starts increasing linearly is the location of damage. After the suspected damaged elements are determined in the first stage, the first order sensitivity of the structural natural frequency is used to identify damages more prec

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Bhargav Sai, Cherukuri, and D. Mallikarjuna Reddy. "Dynamic Analysis of Faulty Rotors through Signal Processing." Applied Mechanics and Materials 852 (September 2016): 602–6. http://dx.doi.org/10.4028/www.scientific.net/amm.852.602.

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In this study, an effective method based on wavelet transform, for identification of damage on rotating shafts is proposed. The nodal displacement data of damaged rotor is processed to obtain wavelet coefficients to detect, localise and quantify damage severity. Because the wavelet coefficients are calculated with various scaled indices, local disturbances in the mode shape data can be found out in the finer scales that are positioned at local disturbances. In the present work the displacement data are extracted from the MATLAB model at a particular speed. Damage is represented as reduction in

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Zhao, Bingchao, Pan Chen, Jingbin Wang, Jingui Zhang, and Di Zhai. "A Comprehensive Evaluation and Analysis of Ground Surface Damage Due to Mining under Villages Based on GIS." Applied Sciences 13, no. 18 (2023): 10136. http://dx.doi.org/10.3390/app131810136.

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This paper aims to evaluate the severities and causes of ground surface building and cropland damages after coal mining in a better way, and to clarify the correlation between the damage assessment indexes that influence mining. Against the backdrop of multi-seam mining in certain coal mines in China, the estimated results of each displacement and deformation were analyzed using GIS technology. The damage range determined for each deformation index is divided according to the displacement and deformation combined with the virtue of damage judgment threshold. The damage ranges on the ground sur

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Auersch, L. "Characteristics of train passages over slab tracks from measurements and different track–soil models: Damage detection and ground vibration reduction." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 234, no. 2 (2019): 142–60. http://dx.doi.org/10.1177/0954409719835036.

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The characteristics of train passages over intact or damaged slab tracks on different soils have been calculated by the finite-element boundary-element method or the wavenumber-domain method. The influence of track and soil parameters on the distribution of track displacements and soil forces has been analysed. The measured and calculated displacement time histories of train passages could be used to identify track damages such as loose sleepers or a loose track plate. The time histories and spectra of soil forces can explain the measured ground vibration reduction in the slab tracks. The calc

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9

Guo, De Ping, and Masanori Hamada. "Lessons Learnt from Seismic Damage Induced by the 2008 Wenchuan Earthquake." Applied Mechanics and Materials 226-228 (November 2012): 889–96. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.889.

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The 2008 Wenchuan earthquake with a surface wave magnitude of 8.0 induced numerous infrastructure damages. The typical seismic damages of 61 bridges, 18 tunnels and slope reinforcements are presented. The results show longitudinal or transverse displacement was the most widespread bridge seismic damage and resulted in girder dropping, shear key failure, joint expansion and support damage. Pillar was sheared off or crushed failure due to strong motions and lack of sufficient hoop steels. Tunnel damage was mainly observed at portal, which was mostly caused by slope failure. Strong ground shaking

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10

Ruan, Zhigang, and Zuguang Ying. "Effectiveness analysis of structural anomaly diagnosis based on ANN model." Vibroengineering PROCEDIA 42 (May 16, 2022): 21–26. http://dx.doi.org/10.21595/vp.2022.22446.

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Assessing and localizing damages are an important problem in structural engineering. Artificial neural networks (ANN) have an excellent pattern recognition capability. In this paper, a structural anomaly diagnosis method based on ANN model using displacement response signals is proposed to assess and localize damages, and applied to a five-story frame structure under random base excitation. The random displacement responses are used as the input to ANN for detecting structural damages, which differ from conventional methods such as using modal parameters extracted from responses. The ANN model

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Çöğürcü, Mustafa Tolga, and Mehmet Uzun. "Effect of configuration of shear walls at story plan to seismic behavior of high-rise reinforced concrete buildings." Challenge Journal of Structural Mechanics 6, no. 1 (2020): 31. http://dx.doi.org/10.20528/cjsmec.2020.01.004.

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In developing countries, the need for shelter, working area, shopping and entertainment centers is increasing due to the increasing population effect. In order to meet this need, it is necessary to turn to high-rise buildings. Significant damages have been observed as a result of insufficient horizontal displacement stiffness of high-rise buildings in major earthquakes in previous years. It is known that as the height of the structure increases, the displacement demand of the structure also increases. Since it is accepted that the structure will make inelastic deformation in the design of the

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Samson Nitonye, Chris Feniobu, and Blessing Omokhule Eragbai. "Floodable length analysis of a container vessel using computer aided design." Global Journal of Engineering and Technology Advances 14, no. 3 (2023): 084–98. http://dx.doi.org/10.30574/gjeta.2023.14.3.0048.

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The floodability of a container vessel is investigated to determine the maximum volume of compartments that can be flooded without causing the container vessel to capsize. In this project, Maxsurf modeler was used for the hull design and Maxsurf stability enterprise for the floodable length analysis of a container vessel at several displacements, number of transverse water tight bulkheads and its positions from AP to FP and a constant permeability value for the compartments. Floodable length is the preliminary check on damage survival. It is used at the initial concept design phase because it

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Samson, Nitonye, Feniobu Chris, and Omokhule Eragbai Blessing. "Floodable length analysis of a container vessel using computer aided design." Global Journal of Engineering and Technology Advances 14, no. 3 (2023): 084–98. https://doi.org/10.5281/zenodo.7931868.

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The floodability of a container vessel is investigated to determine the maximum volume of compartments that can be flooded without causing the container vessel to capsize. In this project, Maxsurf modeler was used for the hull design and Maxsurf stability enterprise for the floodable length analysis of a container vessel at several displacements, number of transverse water tight bulkheads and its positions from AP to FP and a constant permeability value for the compartments. Floodable length is the preliminary check on damage survival. It is used at the initial concept design phase because it

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14

Otsuka, Yuichi, Takuya Sakonju, and Yukio Miyashita. "Interactive Evaluation of Interfacial Damages on Loosening Behavior of Acetabular Cup Loosening Using AE and IR Method." Key Engineering Materials 967 (December 5, 2023): 171–76. http://dx.doi.org/10.4028/p-iqi1pq.

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We aim at revealing the damage behavior of HAp sprayed coating on the surface of acetabular cup subjected to cyclic loading using AE (Acoustic Emission) method and IR (Infrared thermography) methods. Fatigue test was conducted in SBF(simulated body fluid), and the displacement of acetabular cup embedded in simulated bone was measured by two cantilever pairs. Acoustic emissions from delamination or wear of HAp coating were also measured by AE method, and the temperature change due to friction and wear near the top was measured by IR method. The analysed result could estimate the process in whic

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Cheng, Chang Ming. "Analysis Carrying Capacity of Hydraulic Concrete Dam." Applied Mechanics and Materials 716-717 (December 2014): 400–405. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.400.

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This paper makes analysis on accelerated speed overload and hydraulic pressure after earthquake, as well as the relationship between the ground motion peak acceleration and the dam body displacement, dam body damage volume ratio, and dam facing damage volume ratio. According to dam body partition, this paper takes the ratio of over stress accumulative duration and stress required capacity as parameters, and studies arch local earthquake damage evaluation of dam body partition. After analysis, it is found that after arch dam experiences different geological process, there are damages in both si

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Troev, T., N. Nankov, L. Petrov, and E. Popov. "Computer Modeling of Displacement Cascades in Beryllium Irradiated with Intensive Neutron Flux." Research Letters in Physics 2008 (February 7, 2008): 1–4. http://dx.doi.org/10.1155/2008/746892.

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Computer simulations of the radiation defects created in beryllium irradiated by fast neutrons (E>0.1 MeV) using the Geant4 and SRIM packages were carried out. The atom cascade displacements in Be at a neutron fluence of 1.6×1020 n/cm2 were determined to be 0.06 dpa and the helium concentration was calculated to be 168 appm. The concentration of 6Li has been estimated to be 5% in comparison to the He concentration. Nanoscale calculations were done in 30×30×30 nm cube of fast neutron-irradiated Be. A correlation between the Be primary knock-on atom (PKA) energies and the damage cascades has

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Gorgin, Rahim, and Ziping Wang. "Structural Damage Identification Based on Principal Curvatures of Mode Shape." International Journal of Acoustics and Vibration 25, no. 4 (2020): 566–76. http://dx.doi.org/10.20855/ijav.2020.25.41714.

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This paper presents a procedure for damage identification and characterization on plates, based on the principal curvatures of their first mode shape. Each mode shape represents the displacement of the structure at its corresponding natural frequency. Since, variations in the geometry due to cracks or material property degradation, make changes in the mode shapes of the structure, such changes can be used for damage identification methods. The presented procedure only requires the first mode shape of the intact and damaged structure. It is shown that the principal curvatures of the surface def

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Zhao, Jiu Ling, Bo Gao, Xue Ren Wang, and Bao Shun Zhou. "Numerical Analysis of Multiscale Progressive Damage for Solid Rocket Motor Composite Shell." Applied Mechanics and Materials 574 (July 2014): 219–23. http://dx.doi.org/10.4028/www.scientific.net/amm.574.219.

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In this study, the evolution of laminates in four damages are analyzed based on the established multiscale reinforced composite material damage model from a single cell model, single plate model to multilayer fiber model of carbon fiber. The validity of the model is verified by numerical simulation of laminate tensile test. Based on the established model to calculate the [±26/902]3 damage evolution of SRM due to withstand pressure in the straight section and the results show that: the calculation is consistent with the experimental results of displacement, and the role of a variety of common d

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Aljorany, Ala Nasir, and Ghusoon Sadiq Al-Qaisee. "Field observations and finite element 3-D analysis of soil displacements close to unsupported excavation." MATEC Web of Conferences 162 (2018): 01029. http://dx.doi.org/10.1051/matecconf/201816201029.

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Soil displacements due to unsupported deep excavation may cause severe damages to the nearby structures and foundations systems. Such excavations affect the state of stresses and displacements field of the surrounding soil. In this study, the soil displacements at five observation points were continuously monitored for23 days, which was the time period of excavation of about 7 m deep open tunnel. The reference points were installed on the ground surface at horizontal distance ranging from 1.25 to 3.25 m from tunnel excavation edge. The construction work was related to the project of developing

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20

Lu, Chih-Heng, Chuen-Fa Ni, Chung-Pai Chang, Jiun-Yee Yen, and Ray Chuang. "Coherence Difference Analysis of Sentinel-1 SAR Interferogram to Identify Earthquake-Induced Disasters in Urban Areas." Remote Sensing 10, no. 8 (2018): 1318. http://dx.doi.org/10.3390/rs10081318.

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This study proposes a workflow that enables the accurate identification of earthquake-induced damage zones by using coherence image pairs of the Sentinel-1 satellite before and after an earthquake event. The workflow uses interferometric synthetic aperture radar (InSAR) processing to account for coherence variations between coseismic and preseismic image pairs. The coherence difference between two image pairs is useful information to detect specific disasters in a regional-scale area after an earthquake event. To remove background effects such as the atmospheric effect and ordinal surface chan

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Mahendran, G., Chandrasekaran Kesavan, and S. K. Malhotra. "Damage Detection in Laminated Composite Beams, Plates and Shells Using Dynamic Analysis." Applied Mechanics and Materials 787 (August 2015): 901–6. http://dx.doi.org/10.4028/www.scientific.net/amm.787.901.

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Vibration-based technique to detect damage in laminated composite beams, rectangular plates and cylindrical shells is presented in this paper.A parameter called damage indicator calculated based on mode shape curvature isused in this studyto detect the location and size of small damages accurately in laminated composite structures. Through numerical analysis of laminated compositecantilevered beam, plate and cylindrical shell models with edge crack as damage, the absolute change inthe damage indicator is localized in the region of damage. Thechange in damage indicatorincreases withincreasing s

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MacLaughlin, Mary, Steve Berry, Michael Petro, Katherine Berry, and Anders Bro. "Characterization of peak shear strength of rough rock joints using limited displacement multi-stage direct shear (LDMDS) tests." E3S Web of Conferences 92 (2019): 13011. http://dx.doi.org/10.1051/e3sconf/20199213011.

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Current standard direct shear test methods for rock joints do not account for damage to the specimens' asperity profiles; tests require shearing of a single specimen to large displacements under successive normal stresses (the multistage test), or the use of similar specimens in multiple tests. Due to the inherently unique nature of rock joints and corresponding difficulty in obtaining specimens with identical or even similar geometries, multistage tests are more common. A major issue with the multistage test is that successive shearing of the specimen damages the surface asperities and change

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Tan, D., ZR Lu, and JK Liu. "A two-step method for damage identification in beam structures based on influence line difference and acceleration data." Advances in Mechanical Engineering 10, no. 7 (2018): 168781401878740. http://dx.doi.org/10.1177/1687814018787404.

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This article presents a two-step approach for structural damage identification in beam structure. Damages are located using the influence line difference before and after damage, the calculation of damage severity is accomplished by acceleration data and bird mating optimizer algorithm. Local damages are simulated as the reduction of both the elemental Young’s modulus and mass of the beam. The technique for damage localization based on displacement influence line difference and its derivatives for beam structure has been outlined. An objective function that comprises dynamic acceleration is ut

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Liu, Xianglei, Peipei Wang, Zhao Lu, et al. "Damage Detection and Analysis of Urban Bridges Using Terrestrial Laser Scanning (TLS), Ground-Based Microwave Interferometry, and Permanent Scatterer Interferometry Synthetic Aperture Radar (PS-InSAR)." Remote Sensing 11, no. 5 (2019): 580. http://dx.doi.org/10.3390/rs11050580.

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This paper presents a practical framework for urban bridge damage detection and analysis by using three key techniques: terrestrial laser scanning (TLS), ground-based microwave interferometry, and permanent scatterer interferometry synthetic aperture radar (PS-InSAR). The proposed framework was tested on the Beishatan Bridge in Beijing, China. Firstly, a Digital Surface Model (DSM) of the lower surface of the bridge was constructed based on the point cloud generated by using TLS to obtain the potential damage area. Secondly, the dynamic time-series displacement of the potential damage area was

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Zheng, Zhong Lang, and Qin Da Zeng. "Damage Identification of Cantilevered Beam Based on Multi-Resolution Analysis." Applied Mechanics and Materials 487 (January 2014): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amm.487.267.

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As a derivative parameter of the structural displacement mode, damage factor matrix was adopted to investigate the detection of structural crack location and damage. A methodological strategy by combination of the damage factor matrix and the wavelet multi-resolution analysis is presented in the paper, in order to identify structural damages of the cantilevered beam. The results show that damage can be identified by the damage factor matrix and the wavelet multi-resolution analysis, and the damage degree can be estimated by damage frequency band energy of the wavelet analysis. A reference to d

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Mohammed Khalaf A. Al Bqour and Hamzeh Ismaeil Ibrahim Abu Shari'ah. "Damage to the International Community of the Crime of Forced Displacement." Journal of Humanities and Social Sciences Studies 7, no. 3 (2025): 109–18. https://doi.org/10.32996/jhsss.2025.7.3.11.

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This study addressed the damages of the crime of forced displacement on the international community. This study reached several results, the most prominent of which is that the crime of forced displacement falls within the scope of crimes against humanity, and the effects of this crime remain on the international community. The researcher recommended the necessity of finding binding international mechanisms through effective international community institutions such as the International Criminal Court in order to combat this type of crime. Keywords: International responsibility, forced displac

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Putra, Risma, and Winarputro Adi Riyono. "Risk analysis of seismic bridge damage: case study after Lombok and Palu earthquake." E3S Web of Conferences 156 (2020): 03008. http://dx.doi.org/10.1051/e3sconf/202015603008.

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Indonesia is known as an earthquake-prone region, lies in the ring of fire zone. This potential hazard can impact several infrastructures, including bridges. Seismic bridge damages could possibly disrupt traffic flow furthermore cut off the regional connectivity. In this study, risk analysis is carried out on several bridges after Lombok and Palu earthquake. Visual inspection has been undertaken on 38 bridges on-site, and several damages identification are reported. Risk analysis was then carried out according to the severity of element damages and the frequency of occurrence. From the analysi

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Liu, Bin, Nongyue Gao, Bosen Tang, et al. "Progressive damage behaviors of the stepped-lap composite joints under bending load." Journal of Composite Materials 54, no. 14 (2019): 1875–87. http://dx.doi.org/10.1177/0021998319889119.

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Due to the high connecting strength and excellent load-transferring efficiency, the adhesively stepped-lap composite bonding has been widely used as joints and repairs in advanced aircraft structures. In the service life of composite structures, they frequently subject to bending loads which are rarely reported by the available reference. Hence, in this paper, three-point and four-point bending experiments are performed on composite stepped-lap structures. Typical damage mode of adhesive on the stepped surface has been found in experiments. And the failure of composite fiber, matrix, interlami

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Carfagnini, Carmela, Simonetta Baraccani, Stefano Silvestri, and Dimitris Theodossopoulos. "Pseudo-Static Response of Masonry Cross Vaults to Imposed Shear Displacements at the Springings." Key Engineering Materials 747 (July 2017): 456–64. http://dx.doi.org/10.4028/www.scientific.net/kem.747.456.

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The static and dynamic performances of historical masonry churches are closely related to the behaviour of each substructure, as well as to the mechanical properties of the constituent materials. Information on damage location and extent, collected after recent violent Italian earthquakes, highlighted that masonry vaults are among the most vulnerable elements. The investigation of their dynamic behaviour under earthquake excitation (stress and deformation states) is a fundamental issue for effective structural interventions. During an earthquake ground motion, cross vaults are basically subjec

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Ma, Lifeng, Kilho Eom, Jean Geringer, Tea-Sung Jun, and Kyungmok Kim. "Literature Review on Fretting Wear and Contact Mechanics of Tribological Coatings." Coatings 9, no. 8 (2019): 501. http://dx.doi.org/10.3390/coatings9080501.

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This article reviews fretting wear damage in industries and in the contact mechanics of coated systems. Micro-slip motion resulting in fretting damage is discussed along with major experimental factors. The experimental factors, including normal force, relative displacement, frequency and medium influence are directly compared. Industrial solutions to reduce fretting damages are then discussed. The contact mechanics of a coated system are reviewed to quantify stress states in a coating layer and the substrate. Finally, a literature review on simulation for fretting is carried out. This review

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Zhang, Yanrong, Kai Wu, Chao Yu, Shuang Zhang, and Xiaopei Cai. "Application of Statistical Process Control for Structural Health Monitoring of a High-Speed Railway Track System." Applied Sciences 12, no. 12 (2022): 6046. http://dx.doi.org/10.3390/app12126046.

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To make full use of the massive monitoring data accumulated in China high-speed railways, an improved statistical process control (SPC) framework was introduced to analyze the discontinuous monitoring data of the track system on a high-speed railway elevated station. Multilinear regression models and time series difference equation (TSDE) models were first developed to separate common-cause variations in the monitoring data. Then, individual control charts, moving range control charts, and exponentially weighted moving average control charts were constructed to detect special-cause variations.

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Huang, Yong, Liang Tian, Yachen Xie, and Yuexiang Wu. "Analysis of characteristics of ground motion and typical bridge performance in the Baoshan earthquake." Sound & Vibration 59, no. 1 (2024): 1998. https://doi.org/10.59400/sv1998.

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A Ms5.2 earthquake occurred in Longyang District, Baoshan City, Yunnan Province on 2 May 2023. The earthquake caused some degree of damage to power facilities and roads. Since then, small and medium sized earthquakes have occurred frequently in this region. In order to better analyze the characteristics of ground motion in this area and the coping strategies of related bridges, the response spectra, omnidirectional response spectra and omnidirectional representations of other indexes of intensity measure from records of strong ground motion were analyzed using the seismic records recorded by s

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Huang and Zang. "Damage Detection Using Modal Rotational Mode Shapes Obtained with a Uniform Rate CSLDV Measurement." Applied Sciences 9, no. 23 (2019): 4982. http://dx.doi.org/10.3390/app9234982.

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With the rapid development of a continuously scanning laser Doppler vibrometer (CSLDV) technique, the full-field mode shapes of structures with high accuracy can be obtained. In this paper, a novel damage detection method using modal rotational mode shapes obtained with a uniform rate CSLDV measurement is proposed. The modal rotational damage indicators considering the changes of modal rotational mode shapes between the damaged and the undamaged states are established. Because the modal rotational mode shapes are obtained through the derivative of the detailed displacement mode shapes of trans

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Zhou, Xiwu, Yushen Gao, Guoxue Zhang, and Shixiang Xu. "Mechanical properties of equal-strength stainless reinforced replacement piers under lateral impact loading." Advances in Mechanical Engineering 10, no. 6 (2018): 168781401877863. http://dx.doi.org/10.1177/1687814018778635.

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Stainless reinforced equal-strength replacement piers are used to solve the problems of steel corrosion, surplus strength, and resource waste for piers in marine environments. In this study, an ultrahigh drop weight impact test system was applied for a comparative experimental model of the horizontal impacts between two groups of stainless reinforced replaced concrete piers. The impact forces and displacements, strain time–history curves, crack propagations and distributions, and concrete damages, were analyzed during the experimental test. The results showed that the original specimen had con

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Sanabria, M. P., C. Guardiola-Albert, R. Tomás, et al. "Subsidence activity maps derived from DInSAR data: Orihuela case study." Natural Hazards and Earth System Sciences 14, no. 5 (2014): 1341–60. http://dx.doi.org/10.5194/nhess-14-1341-2014.

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Abstract. A new methodology is proposed to produce subsidence activity maps based on the geostatistical analysis of persistent scatterer interferometry (PSI) data. PSI displacement measurements are interpolated based on conditional Sequential Gaussian Simulation (SGS) to calculate multiple equiprobable realizations of subsidence. The result from this process is a series of interpolated subsidence values, with an estimation of the spatial variability and a confidence level on the interpolation. These maps complement the PSI displacement map, improving the identification of wide subsiding areas

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Kamal, Muhammet, and Mehmet Inel. "Correlation between Ground Motion Parameters and Displacement Demands of Mid-Rise RC Buildings on Soft Soils Considering Soil-Structure-Interaction." Buildings 11, no. 3 (2021): 125. http://dx.doi.org/10.3390/buildings11030125.

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This paper investigates the correlation between ground motion parameters and displacement demands of mid-rise RC frame buildings on soft soils considering the soil-structure interaction. The mid-rise RC buildings are represented by using 5, 8, 10, 13, and 15-storey frame building models with no structural irregularity. A total of 105 3D nonlinear time history analyses were carried out for 21 acceleration records and 5 different building models. The roof drift ratio (RDR) obtained as inelastic displacement demands at roof level normalized by the building height is used for demand measure, while

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Johan, O., Idris, Fakhrurrozi, and O. Sianipar. "The impact of Manta Mae Phinisi ship grounding at Gili Lawa Darat Marine National Park of Komodo, West Manggarai, East Nusa Tenggara." IOP Conference Series: Earth and Environmental Science 967, no. 1 (2022): 012048. http://dx.doi.org/10.1088/1755-1315/967/1/012048.

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Abstract Coral reefs are distributed widely around Indonesia waters which has various functions as fisheries sources and tourism benefits. Coral reefs are very vulnerable to various threats, such as ship grounding in several areas in Indonesia. The measurement of damage width of coral reefs used the irregular polygon method. In contrast, the impact and the level of damage were measured using the underwater photo transect (UPT) method. The grounding of the ship has caused massive damage to coral reefs with a width area of 46.89 m2. Types of damage include physical and biological damages that ma

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Baran, Marta, Piotr Synaszko, Janusz Lisiecki, and Sylwester Kłysz. "Comparative Study on Fatigue Life of CFRP Composites with Damages." Fatigue of Aircraft Structures 2019, no. 11 (2019): 28–38. http://dx.doi.org/10.2478/fas-2019-0004.

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AbstractIn this work, the compressive residual strength tests results, Compression After Impact (CAI), are presented. The specimens were made of carbon-epoxy prepreg E722-02 UHS 130-14. Two variants of specimens were tested: samples undamaged and samples with damage that was centrally introduced by a drop-weight impact, as per the ASTM D7136/7136M standard. An impactor with potential energy equal to 15J and the type of support required by the standard were used. The size of impacted damages, defined as an area of damage on a plane perpendicular to the impact direction, and the equivalent diame

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Ren, Peng, Zhi Zhou, and Jinping Ou. "Non-baseline method for damage detection in truss structures using displacement and strain measurements." Advances in Structural Engineering 22, no. 3 (2018): 818–30. http://dx.doi.org/10.1177/1369433218800949.

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Realistic problems restrict the application of many existing structural damage detection methods. Due to the requirement of a comparison between two system states, lack of appropriate baseline data may become one of the limitations to undertake structural health monitoring strategy. This article suggests a non-baseline damage detection approach based on the mixed measurements and the transmissibility concept and demonstrates it in truss structures. The algorithm uses the measurement data from the strains of the truss elements and the displacements of the truss joints, in which the displacement

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Takamatsu, Hiroyuki, Shingo Sumie, Yoshiro Nishimoto, and Takefumi Horiuchi. "A New Laser Photothermal Displacement Measurement for Evaluation of Semiconductor Lattice Damages." IEEJ Transactions on Electronics, Information and Systems 112, no. 11 (1992): 656–64. http://dx.doi.org/10.1541/ieejeiss1987.112.11_656.

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Xiang, Chang Sheng, Yu Zhou, Sheng Kui Di, Li Xian Wang, and Jian Shu Cheng. "Detection Indicator of Structural Nondestructive Damage Based on Flexibility Curvature Difference Rate." Applied Mechanics and Materials 744-746 (March 2015): 46–52. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.46.

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Applied to the structural damage identification, Modal Flexibility is better than the Modal Frequency and Modal Displacement, the indicators of Flexibility Curvature are effective and sensitive. This paper proposes a new detection indicator which is Flexibility Curvature Difference Rate (FCDR) that by using the change rate of diagonal elements of flexibility curvature difference when before and after damage. The numerical examples of a simple beam, a continuous beam and a frame with the damage conditions of the different positions and different degrees are used to verify FCDR. The result shows

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Ikpe, Aniekan Essienubong, Ejiroghene Kelly Orhorhoro, and Abdulsamad Gobir. "Design and Reinforcement of a B-Pillar for Occupants Safety in Conventional Vehicle Applications." International Journal of Mathematical, Engineering and Management Sciences 2, no. 1 (2017): 37–52. http://dx.doi.org/10.33889/ijmems.2017.2.1-004.

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This paper is focused on B-pillar design and reinforcement with certain criteria that the final reinforcement design weight does not exceed 6Kg and the maximum displacement must be less than 40mm on the application of 140KN load. Surface welding method was applied on the first and second design while spot welding was used for the third design, whereas, seam welding was applied on the fourth design which happened to have the least maximum displacement, least maximum stress and weight compared to the other designs. The welding methods applied in each of the design gave different displacement val

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Cui, Zhen, Maochu Zhang, Kai Wu, and Hongsheng Ma. "Evaluating the Performance and Stability of the Highway Subgrades in Seismic Events, a Case Study of the Changning Earthquake, Sichuan." International Journal of Environmental Research and Public Health 19, no. 21 (2022): 14379. http://dx.doi.org/10.3390/ijerph192114379.

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On 17 June 2019, an M6.0 earthquake occurred in Changning County, Sichuan Province, China. Considerable highway subgrades were damaged in this earthquake. By investigating seismic damage of these subgrades, a systematical analysis of influence factors and failure mode of the damages on highway subgrade have been given. There is a close relationship between the damaged degree of subgrade and the distance of epicenter, fault distance, and structure type of subgrade. The seismic hazard investigation shows that the seismic damage of the cut-and-fill subgrade was more severe than that of the fill s

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Roccheggiani, Matteo, Daniela Piacentini, Emanuela Tirincanti, Daniele Perissin, and Marco Menichetti. "Detection and Monitoring of Tunneling Induced Ground Movements Using Sentinel-1 SAR Interferometry." Remote Sensing 11, no. 6 (2019): 639. http://dx.doi.org/10.3390/rs11060639.

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SAR interferometry is a powerful tool to obtain millimeter accuracy measurements of surface displacements. The Sentinel-1 satellite mission nowadays provides extensive spatial coverage, regular acquisitions and open availability. In this paper, we present an MT-InSAR analysis showing the spatial and temporal evolution of ground displacements arising from the construction of a 3.71 km overflow tunnel in Genoa, Italy. Underground tunneling can often modify the hydrological regime around an excavated area and might induce generalized surface subsidence phenomena due to pore pressure variations, e

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Dar, RooufUnNabi, S. M. Anas, and Mehtab Alam. "Effect of Skew Angle on the Dynamic Response of a Reinforced Concrete Bridge under Blast Loading." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 555–61. http://dx.doi.org/10.38208/acp.v1.548.

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Accidental explosions and subversive blasts are on rise. The recent devastating Beirut explosion witnesses this fact. Performance of the structures such as bridges in cities and strategic boarder areas is of paramount importance. With this concern the effect of skew angle on the performance of a single span reinforced concrete (RC) bridge deck supported on three symmetrically placed RC girders under blast loading generated by1000kgTNT charge located above and below the mid-section of the central girder at a standoff distance of 0.5 m has been investigated using ABAQUS/CAE. Analyses have been p

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Tao, Shilin, Xueqi Cen, Xiaocong Yu, Junqing Hu, and Changbin Kan. "Study on Critical Parameters of Nitrogen Injection during In Situ Modification in Oil Shale." Energies 15, no. 21 (2022): 8034. http://dx.doi.org/10.3390/en15218034.

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During in situ modification, inappropriate thermal insulation measures applied in annulus of injection wells will cause injection technical problems such as tremendous heat loss, wellhead lifting, serious casing damages, and corrosion. Continuous nitrogen injection into annulus is an effective measure to realize thermal insulation of injection wells. The critical displacement parameters of nitrogen injection in annulus are a key factor in the process of continuous nitrogen injection. However, the critical nitrogen injection rate under various working conditions, such as different well types, d

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DECANINI, L. D., L. LIBERATORE, and F. MOLLAIOLI. "DAMAGE POTENTIAL OF THE 2009 L'AQUILA, ITALY, EARTHQUAKE." Journal of Earthquake and Tsunami 06, no. 03 (2012): 1250032. http://dx.doi.org/10.1142/s1793431112500327.

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On April 6, 2009 (1:32 UTC) an earthquake of magnitude MW 6.3, caused by a normal fault rupture, shook the Abruzzo Region of Central Italy causing 309 deaths, hundreds injured and thousands homeless. L'Aquila city, which is located very close to the causative fault in hanging wall position, was severely damaged by the event. In this work, after a description of the damages observed in reinforced concrete (RC) buildings, a study on the characterization of damage potential of strong ground motions recorded during the main shock and the strongest aftershocks is presented. Elastic and inelastic sp

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Liu, Yang, Kai Ling Li, Yu Ming Men, Guang Yuan Weng, and Hong Jia Liu. "Study on Interaction between Soil and U-Shaped Subway Tunnel in the Environment of Ground Fissures." Advanced Materials Research 250-253 (May 2011): 2342–45. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2342.

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The interaction mechanism, between soil and U-shaped Subway tunnel, is studied by numerical simulation in the environment of ground fissures. The Subway Line 2 through the ground fissures in Xi’an. The analysis results show that the soil mass influenced by the relative displacement and the vertical displacement gradually increases with the relative displacement increasing of ground fissures movement. The deformation area of tunnel lies in the two sides of presupposed ground fissure, and the area enlarge with vertical relative displacement increasing. The tunnel structure damages at the ground

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Ma, Hua, Xinyu Luan, Zhenbao Li, Haijian Cui, Wenjing Wang, and Jia Song. "Seismic Performance of Damaged Dovetail Joints with Different Damaged Degrees in Timber Frames." Advances in Civil Engineering 2019 (August 21, 2019): 1–17. http://dx.doi.org/10.1155/2019/7238217.

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The mortise and tenon joints are the main connection forms used in ancient timber buildings, and damaged joints have a critical effect on the safety of a timber structure. There are three main damaged cases of dovetail joints which are pulling, contraction, and mixing damages. In this study, using a theoretical analysis of the stress distribution in a mortise and tenon joint resulted from the pullout damage, a theoretical equation for the resisting moment of the joint was proposed. A finite element model was used to simulate the cyclic displacement loading of a frame with intact joints and wit

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Ahmad, Farhad Farahmand, Bhartesh, and Shuaib Qammer Sayed. "Displacement Analysis of RC Frames and its Seismic Performance Appraisal." International Journal of Recent Technology and Engineering (IJRTE) 9, no. 3 (2020): 94–101. https://doi.org/10.35940/ijrte.C4250.099320.

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In India when structure engineer’s analysis and design a structure like buildings, they are checking it for displacement because of safety and control of damages; so in this paper a set of frames with different height of reinforced moment resisting frames were analyzed by two popular methods of performance-based plastic design method and direct displacement-based design method. For calculation of base shear, the IS code has been used in both methods and ETABS software used for seismic performance evaluation by nonlinear static pushover analysis. The results of analysis with different met

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