Article
Materials Science, Multidisciplinary
Yajie Wang, Xiaoqiang Zhang, Daqing Wang, Jieshi Chen, Chun Yu, Junmei Chen, Jijin Xu, Ping Zhu, Hao Lu
Summary: A novel self-induced ultrasonic tungsten inert gas (U-TIG) welding technique was successfully used to weld Inconel 718 sheet with a thickness of 2 mm to reduce hot cracking. The study systematically analyzed the characteristics of the welding arc, weld formation, microstructure, and micro-hardness distribution between TIG and U-TIG welding. The results showed that the symmetrical shrinkage induced by ultrasonic pulses in the welding arc greatly enhanced the central depression of the weld bead surface, facilitating the release of welding thermal stress. The segregation in grain boundaries was reduced in U-TIG welds, resulting in a lower potential for hot cracking initiation and propagation. The improvement in micro-hardness distribution in U-TIG welds was attributed to grain refinement and segregation dispersion.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Civil
Bruno Pedrosa, Jose Correia, Carlos Rebelo, Milan Veljkovic, Helena Gervasio
Summary: The number of civil engineering structures, especially bridges with long service periods, is increasing globally, leading to common damages like corroded metallic elements and cracks due to fatigue. Injection bolts are considered as an alternative with significant advantages for repairing and strengthening old metallic riveted bridges, showing improved fatigue strength and reduced scatter in data. Experimental tests demonstrate the beneficial effect of injection bolts, especially in terms of fatigue resistance and slip deformation.
ENGINEERING STRUCTURES
(2021)
Article
Chemistry, Physical
Maciej B. Lachowicz, Marzena M. Lachowicz
Summary: The study evaluated high-strength bolt corrosion fatigue through metallographic examinations and found that the combination of cyclic loads and corrosive environment accelerated the fatigue of the fastening bolts, leading to loosening and fatigue cracks. Further damage was caused by fatigue crack growth and corrosion favored by oxygen concentration cell, ultimately resulting in fatigue fracture in one of the bolts due to vibrations during wind tower operation.
Article
Construction & Building Technology
Mingyang Gong, Jingyun Chen
Summary: A 3D tire-bridge interaction FE model was developed to investigate load-induced fatigue damage behavior in curved ramp bridge deck pavement. The results showed that considering tire-bridge interaction and structural design parameters significantly influenced the accurate prediction of fatigue crack evolution law. The developed model, which considers multiple factors, has the potential to enhance fatigue damage analysis of curved ramp bridge deck pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Chuan Wei, Qinghua Zhang, Zhengxiang Yang, Mingzhe Li, Zhenyu Cheng, Yi Bao
Summary: This research investigates the flexural cracking behavior of reinforced UHPC (R-UHPC) overlay in composite bridge deck under static and fatigue loads, and evaluates its load-carrying capacity, cracking process, and fatigue resistance.
ENGINEERING STRUCTURES
(2022)
Article
Mechanics
Moinul Haq, Suresh Bhalla, Tabassum Naqvi
Summary: This study proposes a novel method of using wavelet transform energy to monitor premature fatigue damage in reinforced concrete frames, using PZT patches to acquire global and local vibration response and utilizing EMI technique combined with DWT to identify and quantify fatigue damages. The use of ESP parameters in detecting plate debonding failures and the correlation of ESP in estimating premature fatigue damages using the AD5933 chipset show promising low-cost impedance-based health monitoring solutions for retrofitted RC structures.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Shuo Chen, Guangdong Zhou, Haitao Zhao, Donghui Huang, Yuzhi Chen
Summary: This paper evaluates the feasibility of using ultrasonic characteristic parameters in in-situ wireless monitoring of fatigue crack propagation in structures. Through fatigue crack growth tests and wireless ultrasonic sensing, the relationship between crack length, loading cycles, and ultrasonic characteristic parameters is established. The proposed method shows great potential in evaluating fatigue cracks in thin plate structures, with correlation coefficients higher than 0.96.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Engineering, Mechanical
John Leander
Summary: The replacement of an existing steel railway bridge in Sweden provided an opportunity to fatigue test connections with a long history of in-service loading. The gusset plates welded to the flange edge of I beams, which were deemed exhausted theoretically, were cut out from the bridge and tested. The compressive stresses were found to have an influence on the fatigue endurance, and a correction function was derived to increase the fatigue life for similar details in other existing steel structures.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Construction & Building Technology
Wei Xu, Chuang Cui, Chun-kun Luo, Qing-hua Zhang
Summary: A coating sensor for fatigue crack monitoring of steel bridges based on the potential difference method is proposed in this study. The accuracy and applicability of the coating sensor and corresponding theoretical model for fatigue crack monitoring are verified through experiments.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Mechanical
Haibo Yang, Ping Wang, Hongliang Qian, Shuang Niu, Pingsha Dong
Summary: This paper investigates the fatigue failure modes of single-and double-sided welded joints in orthotropic bridge decks using phased-array imaging technique. The study aims to verify the fatigue failure path defined by the traction structural stress method. Full-scale fatigue specimen tests are conducted to image and size the fatigue crack propagation law. The findings confirm that the fatigue failure mode of these welded joints is the thickness-through mode, consistent with the traction structural stress method.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Civil
Mohammadreza Izadi, Masoud Motavalli, Elyas Ghafoori
Summary: The study proposes a retrofitting system for double-angle connections using Fe-SMAs, which apply reverse positive moment and absorb negative moment due to prestressing and increased axial stiffness, reducing fatigue cracking significantly. This versatile, cost-effective, and easy-to-install bridge connection technique offers an innovative solution to address the issue of fatigue cracking.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Mechanical
Chang Su, Tong-Tong Bi, An-Xia Pan, Yi Gong, Li-Yi Luo, Jie Chen, Zhen-Guo Yang
Summary: This paper investigates the causes of failure in the polycarbonate (PC) plates used in the gearbox oil level gauge of high-speed trains, and proposes effective solutions to ensure the safety of the gearbox parts.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Mechanical
Yun Zou, Rong-tao Shen, Zheng-tong Lu, Yang Zhou, Yang Li
Summary: Ultrasonic nanocrystal surface modification (UNSM) is used to improve the high-cycle fatigue properties of metals, but its effect on the low-cycle fatigue behavior of metals, especially magnesium (Mg) alloys, is limited. In this study, the LZ91 Mg-Li alloy is strengthened using UNSM, and the microstructures, surface roughness, tensile properties, and low-cycle fatigue properties are measured. The results show that UNSM treatment decreases surface roughness, significantly increases hardness, especially of the alpha phase, and changes the crack extension mode to increase the fatigue life of the LZ91 alloy.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Chemistry, Physical
Dongtong Yang, Sen Tang, Yongtao Hu, Alexander Nikitin, Qingyuan Wang, Yongjie Liu, Lang Li, Chao He, Yan Li, Bo Xu, Chong Wang
Summary: In this work, a novel model of ultrasonic fatigue test was developed to simulate the very high cycle fatigue failure of in-service components. The model successfully tested thin-wall material in bending at an accelerated frequency, with the sample resonating at 20kHz. The advantage of the second-order flexural vibration allowed the gauge section of the sample to be in a pure bending condition, reducing complex stress conditions. Combining constraint and loading contact reduced heating from ultrasonic frequency friction. Strain gauge and deflection angle methods verified stress amplitude control, and fractography observation confirmed the similarity between the novel model and conventional bending test.
Article
Engineering, Mechanical
Haibo Yang, Ping Wang, Hongliang Qian, Shuang Niu, Pingsha Dong
Summary: This study investigates the fatigue resistance properties of single- and double-sided welded joints in OBD using the traction structural stress method. Experimental and numerical investigations are conducted, and full-scale fatigue specimen tests are performed to analyze the fatigue property validations and failure modes. The study recommends a specific united master S-N curve for the fatigue performance prediction of single- and double-sided welded joints in OBDs.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Construction & Building Technology
J. Sperry, D. Darwin, M. O'Reilly, A. Lepage, R. D. Lequesne, A. Matamoros, L. R. Feldman, S. Yasso, N. Searle, M. DeRubeis, A. Ajaam
ACI STRUCTURAL JOURNAL
(2018)
Article
Engineering, Civil
Chaohui Li, Remy D. Lequesne, Adolfo Matamoros
JOURNAL OF BRIDGE ENGINEERING
(2019)
Article
Construction & Building Technology
Thomas J. Mander, Adolfo B. Matamoros
ACI STRUCTURAL JOURNAL
(2019)
Article
Construction & Building Technology
Reza Nasouri, Kien Nguyen, Arturo Montoya, Adolfo Matamoros, Caroline Bennett, Jian Li
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2019)
Article
Construction & Building Technology
Reza Nasouri, Kien Nguyen, Arturo Montoya, Adolfo Matamoros, Caroline Bennett, Jian Li
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2019)
Article
Engineering, Civil
Kien Nguyen, Reza Nasouri, Caroline Bennett, Adolfo Matamoros, Jian Li, Arturo Montoya
JOURNAL OF BRIDGE ENGINEERING
(2019)
Article
Engineering, Civil
Kien Nguyen, Reza Nasouri, Caroline Bennett, Adolfo Matamoros, Jian Li, Arturo Montoya
JOURNAL OF BRIDGE ENGINEERING
(2019)
Article
Construction & Building Technology
Hayder Al-Salih, Caroline Bennett, Adolfo Matamoros
Summary: The study evaluated a method to repair distortion-induced fatigue cracks in steel bridge web gaps, showing that the combined CFRP-steel retrofit measure was effective in preventing crack initiation and propagation.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Rasool Ghorbani, Ariel Suselo, Samer Gendy, Adolfo Matamoros, Wassim Ghannoum
Summary: This passage introduces a new computational model for simulating the lateral load-deformation response of reinforced concrete members. The model incorporates new features to enhance simulation fidelity and adjust stiffness and energy dissipation under seismic loading. It can capture the damage behavior of concrete members and adjust the backbone response based on load history, making it applicable to various member types and loading conditions.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2022)
Article
Engineering, Civil
Hamid Khodadadi Koodiani, Negar Erfanian, Arsalan Majlesi, Ali Hosseinzadeh, Elahe Jafari, Mohammad Shahin, Adolfo Matamoros
Summary: A machine learning algorithm was used to develop design equations for the compressive strength of FRP confined columns. By training an Artificial Neural Network (ANN) and investigating the nonlinear relationships between input parameters and model output, the study provided more accurate and precise estimates than other models in the literature.
Proceedings Paper
Construction & Building Technology
R. Nasouri, A. Shahriar, A. Majlesi, A. Matamoros, A. Montoya, F. Testik
Summary: This study presents the results of a numerical investigation on the hydrodynamic response of two coastal bridges, taking into account the flexibility of the structure and the fluid-structure interaction effects. The findings show that wave characteristics influence the dynamic response of the bridges, particularly the forces generated at the connections between substructures and superstructures.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Proceedings Paper
Engineering, Civil
Arsalan Majlesi, Reza Nasouri, Adnan Shahriar, David Amori, Arturo Montoya, Ao Du, Adolfo Matamoros
Summary: Finite element analysis of fluid-structure interaction in bridge structures under wave impact is crucial for understanding the dynamic response of bridges. The use of the CEL method in Abaqus allows for evaluation of key parameters impacting the simulation results, although challenges remain in establishing the validity of these results.
TRAN-SET 2021: PROCEEDINGS OF THE TRAN-SET CONFERENCE 2021
(2021)
Proceedings Paper
Construction & Building Technology
Hayder Al-Salih, Caroline Bennett, Adolfo Matamoros, William Collins, Jian Li
STRUCTURES CONGRESS 2020
(2020)
Article
Construction & Building Technology
R. Nasouri, A. Matamoros, A. Montoya, F. Y. Testik
Article
Materials Science, Multidisciplinary
Kien Nguyen, Reza Nasouri, Caroline R. Bennett, Adolfo Matamoros, Jian Li, Arturo H. Montoya
MATERIALS PERFORMANCE AND CHARACTERIZATION
(2018)
Article
Engineering, Civil
Renbing An, Jiacong Yuan, Yi Pan, Duhang Yi
Summary: Traditional timber structures built on sloped land are more susceptible to seismic damage compared to structures built on flat land. The upper portion of the structure is found to be the weak point on sloped land, with potential issues such as tenon failure and column foot sliding.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Elyas Bayat, Federica Tubino
Summary: The current design guidelines for assessing floor vibration performance do not consider the influence of variability in the walking path on the dynamic response of floors. This study investigates the dynamic response of floors under a single pedestrian walking load, taking into account the randomness of the walking path and load. The effectiveness of the current guidelines in predicting floor response is critically assessed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Gao Ma, Chunxu Hou, Hyeon-Jong Hwang, Linghui Chen, Zhenhao Zhang
Summary: Minimizing earthquake damage and improving repair efficiency are the main principles of resilient structures. This study proposed a repairable column with UHPC segments and replaceable energy dissipaters. The test results showed that the columns with UHPC segments and replaceable dissipaters exhibited high strength, deformation capacity, and energy dissipation.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Zheqi Peng, Xin Wang, Zhishen Wu
Summary: In this study, the statistical modeling of fiber-reinforced polymer (FRP) cables using the classic fiber bundle model is explored. The study considers important features of large-scale multi-tendon FRP cables, such as initial random slack and uneven tensile deformation among tendons. A parametric study and reliability analysis are conducted to predict the load-displacement relation and design thousand-meter-scale FRP cables. The study emphasizes the relation between the reliability index beta of the cable and the safety factor gamma of the FRP material.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Yanchao Shi, Shaozeng Liu, Ye Hu, Zhong-Xian Li, Yang Ding
Summary: This paper introduces a damage assessment method for reinforced concrete (RC) columns under blast loading, using modal parameter measurement as the evaluation index. The validity of the proposed method is validated through numerical and experimental analysis. The results show that this modal-based damage assessment method is applicable for non-destructive evaluation of blast-induced damage of RC columns.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Xiaolin Zou, Maosheng Gong, Zhanxuan Zuo, Qifang Liu
Summary: This paper proposes an efficient framework for assessing the collapse capacity of structures in earthquake engineering. The framework is based on an accurate equivalent single-degree-of-freedom (ESDOF) system, calibrated by a meta-heuristic optimization method. The proposed framework has been validated through case studies, confirming its accuracy and efficiency.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jie Hu, Weiping Wen, Chenyu Zhang, Changhai Zhai, Shunshun Pei, Zhenghui Wang
Summary: A deep learning-based rapid peak seismic response prediction model is proposed for the most common two-story and three-span subway stations. The model predicts the peak seismic responses of subway stations using a data-driven approach and limited information, achieving good predictive performance and generalization ability, and demonstrating significantly higher computational efficiency compared to numerical simulation methods.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jin Ho Lee, Jeong-Rae Cho
Summary: A simplified model is proposed to estimate the earthquake responses of a rectangular liquid storage tank considering the fluid-structure interactions. The complex three-dimensional structural behavior of the tank is represented by a combination of fundamental modes of a rectangular-ring-shaped frame structure and a cantilever beam. The system's governing equation is derived, and earthquake responses such as deflection, hydrodynamic pressure, base shear, and overturning moment are obtained from the solution.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
W. J. Lewis, J. M. Russell, T. Q. Li
Summary: The work discusses the key features and advantages of optimal 2-pin arches shaped by statistically prevalent load and constant axial stress. It extends the design space of symmetric arches to cover asymmetric forms and provides minimum values of constant stress for form-finding of such arches made of different materials. The analysis shows that constant stress arches exhibit minimal stress response and have potential implications for sustainability and durability of future infrastructure.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Wen-ming Zhang, Han-xu Zou, Jia-qi Chang, Tian-cheng Liu
Summary: Saddle position is crucial in the construction and control of suspension bridges. This study proposes an analytical approach to estimate the saddle positions in the completed bridge state and discusses the calculation under different definitions. The relationship between the saddle position and the tower's centerline is analyzed, along with the eccentric compression of the tower. The feasibility of the proposed method is verified through a real-life suspension bridge.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Shaise K. John, Alessio Cascardi, Yashida Nadir
Summary: This study experimentally investigated the use of TRM material for reinforcing concrete columns. The results showed that increasing the number of textile layers effectively increased the axial strength. Additionally, the choice of fiber type and hybrid textile configuration also had a significant impact on strength improvement. A new design model that considers the effects of both the confining matrix and textile was proposed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chandrashekhar Lakavath, S. Suriya Prakash
Summary: This study experimentally investigated the shear behavior of post-tensioned UHPFRC girders, considering factors such as prestress level, fiber volume fraction, and types of steel fibers. The results showed that increasing prestress and fiber dosage could enhance the ultimate load-carrying capacity of the girders, reduce crack angle, and increase shear cracking load.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Vahid Goodarzimehr, Siamak Talatahari, Saeed Shojaee, Amir H. Gandomi
Summary: In this paper, an Improved Marine Predators Algorithm (IMPA) is proposed for size and shape optimization of truss structures subject to natural frequency constraints. The results indicate that IMPA performs better in solving these nonlinear structural optimization problems compared to other state-of-the-art algorithms.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chun-Xu Qu, Jin-Zhao Jiang, Ting-Hua Yi, Hong-Nan Li
Summary: In this paper, a computer vision-based method is proposed to monitor the deformation and displacement of building structures by obtaining 3D coordinates of surface feature points. The method can acquire a large number of 3D coordinates in a noncontact form, improve the flexibility and density of measurement point layout, and is simple and cost-effective to operate.
ENGINEERING STRUCTURES
(2024)
