Article
Engineering, Civil
Jorrit D. Rodenburg, Johan Maljaars, Sjoerd T. Hengeveld, Adri H. J. M. Vervuurt
Summary: This paper proposes a new and more realistic model for the contact surface of tyres, in order to meet the requirements of fatigue loads in road bridges.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Jin Di, Xiaozheng Ruan, Xuhong Zhou, Jie Wang, Xi Peng
Summary: Orthotropic steel decks are susceptible to fatigue cracks due to long-term wheel loading and manufacturing defects. This study investigated the stress behavior of typical connection details in OSDs under actual traffic flows and evaluated their fatigue performance, finding that urgent measures are needed to improve fatigue performance as the fatigue life of these details is less than 100 years. Additionally, finite element analysis showed that an ultra-high performance concrete composite pavement system can effectively reduce fatigue stress amplitudes in structural details.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Xudong Wang, Changqing Miao, DiDi Hao
Summary: This study proposes a computational framework for fatigue performance optimization of diaphragm cutout geometry design in orthotropic steel decks. Sensitivity analysis and predictive modeling using artificial neural networks are used to identify the significant parameters and optimize the cutout design. The framework is demonstrated to be effective and applicable in a real-world application.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Zhiwen Zhu, Jianpeng Li, Yan Huang, Alberto Carpinteri
Summary: Based on bridge field tests, stress distributions and fatigue life of floorbeam cutout detail are significantly affected by cutout geometries. Traditional HSS models underestimate fatigue life due to their inability to account for stress concentration at the cutout detail, while a new HSS model with revised reference points provides more accurate fatigue evaluation.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Construction & Building Technology
K. Anupam, X. Liu, T. Scarpas, P. Apostolidis, S. Erkens, M. van Aggelen
Summary: This research evaluated the performance of two commonly used surfacing systems in the Netherlands by conducting full-scale experiments at an accelerated pavement testing facility. The focus was on assessing the interface response of membranes with the surrounding materials. The results highlighted the importance of membranes with sufficient bonding characteristics in improving the integrity of multi-layer structures on orthotropic steel deck bridges.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Aizhu Zhu, Sijia Ouyang, Yuankun Chen, Yuan Sun
Summary: This study investigates the fatigue performance of a novel double-welded rib-to-deck connection in orthotropic steel bridge decks. The results show that the internal fillet weld improves the fatigue life of the specimens, while the test stress amplitude and penetration of the groove weld also have influence. The master S-N curve method is used to evaluate the fatigue lifetimes of the specimens.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Mechanical
Yong Zeng, Yu Qu, Yujie Tan, Yuhang Jiang, Anbang Gu
Summary: The cutouts of diaphragms and the weld tips of the U-rib-to-diaphragm connections are complex structural details in orthotropic steel decks and are prone to fatigue cracking. Numerical analysis shows that the cracks appear due to the relative horizontal displacement between the deck plate and diaphragm, and stress concentrations play an important role in crack initiation and propagation.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Linze Shi, Bin Cheng, Sheng Xiang, Derui Li, Tiancheng Liu
Summary: This study investigates the monitoring method for fatigue cracks in orthotropic steel bridge decks (OSDs). Experimental and numerical simulation results show that reflected Lamb waves have potential in monitoring crack geometry. The sensor arrangements and crack dimensions have effects on the monitoring results. Standardized wave features are sensitive to fatigue crack growth.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Zhou Shi, Yongcong Zhou, Zhitao Sun, Shili Yang
Summary: The fatigue performance of an orthotropic steel deck in a long-span highway suspension bridge with a wide steel-box girder was investigated. Results showed that fatigue details near the hanger side had relatively large stresses and symmetrical details were affected by deflection of the wide diaphragm. The stress-influenced surfaces were different for fatigue details due to multiple vehicle effects.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Ze Xiang, Zhiwen Zhu, Xinbin Lei
Summary: This study conducted field testing on fatigue cracking of floorbeam cutout in a bridge to investigate fatigue crack initiation, and established a multi-scale numerical model based on extended finite element method (XFEM) to reveal crack growth mechanism. It was found that floorbeam cutout exhibits a complex three-dimensional deformation state under wheel loads, leading to an I-II-III mixed crack growth mode. The crack propagation direction is normal to the free edge of floorbeam cutout, which is the crack propagation direction at initiation. Increasing floorbeam thickness can facilitate preventing the crack propagation of floorbeam cutout.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Jun-Hong Xu, Guang-Dong Zhou, Tai-Yong Zhu
Summary: A new method considering load sequence effects for assessing the fatigue reliability of orthotropic steel decks has been proposed in this study. The results indicate that initial damage significantly reduces the fatigue reliability of orthotropic steel decks.
FRONTIERS IN MATERIALS
(2021)
Article
Chemistry, Physical
Yizhou Liu, Wenhua Huang, Banhai Yu, Zhihao Chen, Ping Wang
Summary: This study investigates the impact of ultrasonic impact treatment (UIT) on the exterior weld seam of T-joints used in orthotropic steel bridge decks. The results show that UIT increases the hardness of the weld seam by inducing localized grain refinement, leading to a significant improvement in fatigue life by 350% to 150% at different stress ratios.
Article
Engineering, Civil
Heng Fang, Nouman Iqbal, Gilles Van Staen, Hans De Backer
Summary: This study analyzed the possibility of cancelling the cope hole in orthotropic steel decks, comparing different modeling methods and optimizing dimensions of the rib-to-crossbeam joint without cope holes. The research results showed that the fatigue performance of the rib-to-crossbeam joint without cope holes is better than that of the joint with cope holes, considering less fatigue-prone locations and reduced fabrication costs.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Dalei Wang, Cheng Xiang, Yihu Ma, Airong Chen, Benjin Wang
Summary: The root-deck crack is a significant fatigue issue on OSDs, impacting bridge serviceability and being challenging to detect. Fatigue testing and microscopic examination identified lack of penetration at the weld root and high stress as key factors in crack initiation and propagation. Comparing with other fatigue test results, differences between root-deck crack and toe-deck crack failures were highlighted, providing insights for improved fatigue design of OSDs.
MATERIALS & DESIGN
(2021)
Article
Engineering, Civil
Hesham Abdelbaset, Bin Cheng, Liang Tian, Hai-Ting Li, Jian Zhao
Summary: This study investigates the fatigue performance of rib-to-floorbeam welded connections in orthotropic steel decks reinforced by ultra-high-performance concrete overlay. The results demonstrate that using UHPC layer significantly extends the fatigue life of the connections and enhances the vertical rigidity.
Article
Engineering, Manufacturing
Milad Saeedifar, Mohamed Nasr Saleh, Hassan M. El-Dessouky, Sofia Teixeira De Freitas, Dimitrios Zarouchas
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Mechanics
Marcio Moreira Arouche, Sofia Teixeira de Freitas, Silvio de Barros
Summary: Inserting a layer of GFM in a bi-material bonded joint interface can improve the fracture performance of bonded structures, particularly under higher mode II fracture conditions.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Romina Lopes Fernandes, Michal K. Budzik, Rinze Benedictus, Sofia Teixeira de Freitas
Summary: This study investigates the fracture onset and crack deflection in multi-material adhesive joints with thick bond-lines under global mode I loading, analyzing the role of adherend-adhesive modulus-mismatch and pre-crack length. The research discusses the parameters controlling the crack path directional stability and the transition between non-cohesive and cohesive fracture onset. The results show that stress singularity at pre-crack tip and T-stress along the crack tip are important factors affecting crack path stability.
COMPOSITE STRUCTURES
(2021)
Review
Engineering, Multidisciplinary
Wandong Wang, Sofia Teixeira De Freitas, Johannes A. Poulis, Dimitrios Zarouchas
Summary: High performance structures require the use of different materials, with fibre reinforced polymer composites often bonded to metals to maximize properties and minimize weaknesses. The interface in such bimaterial assemblies is usually the weakest point. Research on bi-material interface crack problems in the past 30 years mainly covers mechanical testing, crack driving force, and mode partitioning.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Manufacturing
Eirini Tsiangou, Julian Kupski, Sofia Teixeira de Freitas, Rinze Benedictus, Irene Fernandez Villegas
Summary: This study assessed the sensitivity of ultrasonic welding process for joining different composites, revealing that dissimilar composite welded joints are more sensitive to heating time. However, a relatively wide processing interval could still be obtained when the coupling layer had sufficient thickness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Characterization & Testing
Mohamed Nasr Saleh, Natasa Z. Tomic, Aleksandar Marinkovic, Sofia Teixeira de Freitas
Summary: In this study, two synthesized eco-epoxy components based on TA were used to bond aluminum and CFRP, resulting in one adhesive improving the fracture toughness while the other decreased it. A stick-slip pattern of crack growth was observed, with different adhesives leading to different failure modes.
Article
Engineering, Multidisciplinary
Milad Saeedifar, Mohamed Nasr Saleh, Peter Nijhuis, Sofia Teixeira de Freitas, Dimitrios Zarouchas
Summary: This study explored the use of acoustic emission technique for damage assessment in aeronautical bi-material structures. The results showed that acoustic emission accurately detected and tracked damage evolution, and identified damage initiation earlier than digital image correlation.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Review
Mechanics
J. Kupski, S. Teixeira de Freitas
Summary: Adhesive bonding is a suitable technology for carbon fiber reinforced polymer aircraft fuselage structures, but challenges remain in improving the lap shear strength and preventing delamination failure. Future opportunities to increase the out-of-plane strength of CFRP bonded joints are yet to be explored.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Chemical
M. Moazzami, M. R. Ayatollahi, S. Teixeira de Freitas, L. F. M. da Silva
Summary: This paper investigates the mode-mixity in dissimilar DCB joints and finds that the criterion based on longitudinal strain is more suitable for achieving pure mode I loading in different material combinations.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Engineering, Chemical
M. M. Arouche, M. N. Saleh, S. Teixeira de Freitas, S. de Barros
Summary: This study investigates the effect of long-term environmental exposure on the performance of composite-to-metal bonded joints, with findings showing that aging increases the fracture toughness at crack initiation but decreases it during crack propagation. Fractography analysis and chemical characterization revealed that moisture penetration at the edges of the fracture surface leads to adhesive failure, while the failure mode shifts from cohesive to a combination of thin-layer cohesive and adhesive failure after aging in unaffected regions of the fracture surface.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Review
Engineering, Chemical
Michal K. Budzik, Markus Wolfahrt, Paulo Reis, Marcin Kozlowski, Jose Sena-Cruz, Loucas Papadakis, Mohamed Nasr Saleh, Klara V. Machalicka, Sofia Teixeira de Freitas, Anastasios P. Vassilopoulos
Summary: The review article discusses how the development of new adhesives has expanded the use of bonding in various industrial fields, including aerospace, wind energy, automotive, and civil engineering. Due to the lack of relevant regulations across different sectors, academia and companies often establish their own standards. To ensure continuous growth of adhesive bonding, new international standards focusing on the performance of adhesive joints are necessary.
JOURNAL OF ADHESION
(2022)
Article
Engineering, Chemical
Marcio Moreira Arouche, Sofia Teixeira de Freitas, Silvio de Barros
Summary: This paper evaluates the accuracy of the strain-based partitioning method (SBM) for the mixed-mode fracture characterization of asymmetric cracks, showing that SBM is more accurate than the widely applied Williams' partitioning method (WM). SBM describes a coupling function between mode I and mode II fracture and provides a simple design criterion.
JOURNAL OF ADHESION
(2022)
Article
Engineering, Chemical
Ibrahim Abdelfattah, Francisca Ferreira, Mohamed Nasr Saleh, Paulo N. B. Reis, Sofia Teixeira De Freitas
Summary: This study investigates the influence of different sizes of carbon-fiber-reinforced polymer (CFRP) patches on the flexural properties of specimens through experimental and numerical analysis. The results show a significant improvement in the flexural modulus and ultimate load for the repaired laminates with increasing patch size.
JOURNAL OF ADHESION
(2023)
Article
Materials Science, Composites
Mostafa Moazzami, M. R. Ayatollahi, Alireza Akhavan-Safar, Sofia Teixeira de Freitas, Lucas F. M. da Silva
Summary: Moisture diffusion occurs in composite laminates when exposed to humidity, leading to a reduction in their mechanical properties, especially flexural stiffness, which is important in design. This research investigates the mechanical properties of CFRP and GFRP composites as a substrate in adhesive joints under cyclic wet/dry aging conditions for long-term structural applications. The results show that the reduction in flexural stiffness is more severe in CFRP laminates compared to GFRP laminates, indicating the suitability of GFRP laminates for ocean applications.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Materials Science, Composites
Eirini Tsiangou, Sofia Teixeira de Freitas, Rinze Benedictus, Irene Fernandez Villegas
Summary: This paper investigates the sensitivity of the ultrasonic welding process for joining dissimilar composites to variations in welding force or vibration amplitude, finding that reducing either parameter increases heating time and maximum temperatures. Despite local signs of thermal degradation, these alterations do not significantly affect the maximum lap shear strength of the welded joints.
COMPOSITES PART C: OPEN ACCESS
(2021)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
