Article
Materials Science, Composites
Jing Ye, Yan Gao, Yushan Wu, Cheng Liu, Jiale Dong, Huan Wang, Bo Su, Hua-Xin Peng
Summary: A new method called nano-scale electrochemical sculpture (NES) has been developed to enhance the bonding strength of fiber metal laminates (FMLs-NES). Through systematic investigation and comparison with traditional surface treatments, it has been found that FMLs-NES exhibits the smallest damage area and energy absorption, while maintaining structural integrity after impact. Finite element simulations have also provided insights into the impact damage progression and failure mechanisms, and the validated finite element model can be used to optimize the stacking sequence and predict residual strength after impact.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Gang Wei, Chenyu Hao, Jingyu Ai, Yan Feng, Yunfei Deng
Summary: This work studied the failure mode and ballistic protection capability of a carbon fiber aluminum alloy laminated target plate under high-speed projectile impact through ballistic impact tests. The impact resistance of the laminated aluminum alloy and carbon fiber laminates was analyzed considering lamination sequence and warhead shape differences. Results showed that the lamination sequence had a significant effect on anti-impact performance only for flat head projectiles, while ovoid projectiles had little effect. In the fiber-metal composite configuration, placing an aluminum plate in front of the carbon fiber plate exhibited the best resistance to flat head bullet impact, with a ballistic limit speed of 135 m/s and a 26% overall improvement in impact resistance compared to other configurations. Unlike flat head projectiles, ovoid projectile impacts caused severe tensile and tear damage.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Zhenyu Wu, Kang Wang, Lin Shi, Xiaoying Cheng, Yanhong Yuan
Summary: In this paper, the impact resistance and damage tolerance of triaxial braid structure laminates at different positions were studied. Results showed that the triaxial braided fabric with quasi-isotropic properties on the impact side caused more significant matrix cracks and larger damage areas. The study provided valuable reference for failure analysis and structure optimization of composite laminates.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Zhenhui Sun, Cheng Li, Ying Tie
Summary: This study investigated the impact response and damage accumulation of patch-repaired CFRP laminates under repeated impacts using experimental and numerical methods. The research found that impact energy had a significant influence on damage accumulation and energy dissipation in the laminates.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Hang Cheng, Zhiqiang Zhang, Mingwen Ren, Hongjie Jia
Summary: This paper investigates the bending springback behavior of metal/CFRP laminates and determines the optimal curing conditions through experiments and numerical simulations. The results show that the fiber lay-up and metal layer thickness have significant effects on bending springback, while forming speed has a minor influence.
Article
Engineering, Civil
Milad Sangsefidi, Hadi Sabouri, Mohammad Mir, Amin Hasanpour
Summary: The study found that increasing projectile deformability enhances the efficiency of energy dissipation mechanisms and helps to slow down the projectile velocity. Additionally, the interaction between non-rigid projectiles and fiber metal laminate targets plays a crucial role in preventing projectile penetration.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Aerospace
Di Zhang, Wenxin Zhang, Jin Zhou, Xitao Zheng, Jizhen Wang, Haibao Liu
Summary: The study shows that a monotonic transition in preloading from compression to tension leads to a reduction in delamination area and energy dissipation during low-velocity impacts, while the CAI strength of composite materials is related to the stacking sequence.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Civil
Azadeh Fathi, Gholamhossein Liaghat, Hadi Sabouri
Summary: This study demonstrates that incorporating 0.2 wt% of graphene nanoplatelets significantly improves the impact resistance of fiber metal laminates, enhancing adhesion between resin/fibers and composite plies, reducing damage area, and increasing penetration threshold. Additionally, reinforcing composite panels considerably enhances impact behavior compared to unmodified composites.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Zhongyu Li, Junyuan Zhang, Alexander Jackstadt, Luise Kaerger
Summary: This study investigates the low-velocity impact behavior of hybrid CFRP-elastomer-metal laminates (HyCEML) compared to conventional fiber-metal laminates (FML). The impact behavior is evaluated through numerical and experimental methods, analyzing internal damage mechanisms and energy distribution. It is found that introducing elastomer improves energy absorption and load-bearing capacity.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Shuai Zhu, Wenfei Peng, Yiyu Shao, Shujian Li
Summary: This paper conducted experiments and finite element method (FEM) simulations of high-velocity hail impact on carbon fiber reinforced aluminum alloy laminates (CARALL). CARALL were prepared using an autoclave process after surface anodizing. The hail impact tests were conducted with different impact velocities, impact angles, and ply sequences using a light gas gun. The FEM model of the high-velocity impact was established and verified by comparing with experimental results. The effects of different parameters on the hail impact resistance of CARALL were studied based on energy absorption and internal damage mechanism.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Mechanics
Sasanka Kakati, D. Chakraborty
Summary: This paper investigates the oblique low velocity impact behavior of clamped GLARE plates and analyzes the influence of obliquity and coefficient of friction on the impact mechanism and extent of interfacial delamination.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Multidisciplinary
Maitham Alabbad, Senthil S. Vel, Roberto A. Lopez-Anido
Summary: This study presents a numerical model for predicting the low velocity impact resistance and tolerance of carbon fiber-reinforced composite laminates. The model uses a finite element approach to analyze the failure and damage behavior of the laminates and predicts the residual strength after impact. The model is validated with experimental data and can accurately predict the impact resistance and damage tolerance.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Jiao Lin, Chuanxiang Zheng, Yuchen Dai, Zhenyu Wang
Summary: In the failure analysis of composite materials, the debonding of interface is often overlooked. In this study, a model was established and micro mechanics of failure was applied to analyze fiber metal laminate (FML) under different loading angles. Results showed that directly using the stress on the matrix to calculate interface stress is inaccurate, and the damage trend of interface is consistent with that of fiber. The strain hardening phenomenon of FML decreases with larger loading angle, and the mechanical response is symmetric due to its structure symmetry.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Materials Science, Composites
Mohammed Jamsheed, Faizan Mohammad Rashid, R. Velmurugan
Summary: A detailed experimental investigation was conducted on the high-velocity ballistic response of AA 1100-H14 carbon-fiber metal laminates (FMLs). The FMLs were found to absorb more impact energy and provide better ballistic performance compared to pure carbon fiber-reinforced epoxy composite laminates. The thickness and metal volume fraction of the FMLs were found to play a significant role in determining their ballistic properties.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Yong Chen, Liming Chen, Qiong Huang, Zhigang Zhang
Summary: In FMLs, replacing aluminum with magnesium leads to faster perforation and energy dissipation, but also reduces delamination damage at the metal-composite interface.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Manufacturing
Xiangjian Meng, Lu Yao, Changzi Wang, Wentao He, Lingjun Xie, Hao Zhang
Summary: This article investigates the low-velocity impact behavior of non-symmetric FMLs and develops a progressive damage model to predict the damage evolution of composite laminates. It is found that the impact behavior is closely related to the impacted side.
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2022)
Article
Engineering, Marine
Changzi Wang, Shihui Cao, Shaojia Lu, Zhiqiang Hu, Lu Yao, Wentao He
Summary: This study evaluates the dynamic response and failure mechanism of corrugated core composite metal sandwich structures under complicated fluid-structure interaction. By establishing a numerical model, the influence of slamming velocity and aluminum core direction on dynamic response was analyzed, showing that at 10m/s severe core skin debonding and aluminum core buckling near the chine are alleviated.
SHIPS AND OFFSHORE STRUCTURES
(2022)
Article
Mechanics
Lu Yao, Shaofeng Zhang, Xiaojian Cao, Zhenyuan Gu, Changzi Wang, Wentao He
Summary: This paper investigates the tensile behavior and failure mechanisms of fiber metal laminates (FMLs) under different temperatures using experimental, theoretical, and numerical methods. The results show that the tensile strength of FMLs decreases nonlinearly with increasing temperature. These findings are of great significance for the design and utilization of FML structures.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Wentao He, Lingjun Xie, Shuqing Wang, Shihui Cao, Changzi Wang, Lu Yao
Summary: This paper investigates the dynamic response and failure mechanism of composite-metal sandwich structures under slamming impact through numerical simulation. The results show that the overall performance of the sandwich structure is mainly determined by the mechanical properties of the skin, and the damage is influenced by the slamming velocity and material constituent.
POLYMER COMPOSITES
(2022)
Article
Environmental Sciences
Rong Guo, Hong-Mei Liu, Hong-Hao Sun, Dong Wang, Hao Yu, Diana Do Rosario Alves, Lu Yao
Summary: In this study, a grey multiple non-linear regression (GMNLR) model was developed to accurately forecast municipal solid waste (MSW) generation in China. The influential factors of MSW generation were ranked using grey relational analysis (GRA), and it was found that urban road area, residential consumption level, and total population were the main factors. The GMNLR model showed the highest prediction accuracy among the four models evaluated.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Mathematics
Hang Yu, Lu Yao, Yan Ma, Zhaoyuan Hou, Jiahui Tang, Yuming Wang, Yang Ni
Summary: In this study, a moisture diffusion equation was developed to accurately predict the behavior of moisture diffusion in multiphase symmetrical sandwich structures. Both finite element analysis and experimental works were conducted to validate the accuracy of the analytical method. The results showed good agreement with both FEA and experimental data, and the correct interface condition for moisture diffusion behavior in sandwich structures was identified.
Article
Engineering, Civil
Lu Yao, Shaofeng Zhang, Hang Yu, Jiajing Xu, Xiaojian Cao, Yan Ma
Summary: This paper mainly investigates the ultimate compression strength of un-strengthened and CFRP-strengthened steel tubes with random pitting corrosion damage using a numerical method. It explores the factors influencing the ultimate strength of corroded steel tubes and studies the method of strengthening steel tubes with CFRPs. The paper also researches the residual compression performance and damage mechanisms of CFRP-strengthened steel tubes.
KSCE JOURNAL OF CIVIL ENGINEERING
(2022)
Article
Environmental Sciences
Hongmei Liu, Rong Guo, Junjie Tian, Honghao Sun, Yi Wang, Haiyan Li, Lu Yao
Summary: This study developed a quantitative model to analyze the carbon reduction potential of recycling construction waste in Jiangsu province. Results showed the potential for carbon reduction through CDRW recycling is expected to continue growing in the future, which is significant for the government to better manage construction waste and achieve carbon peak targets.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Multidisciplinary
Lizhou Mao, Mengjuan Zhou, Lu Yao, Hang Yu, Xuefeng Yan, Yue Shen, Wenshuai Chen, Pibo Ma, Yan Ma, Songlin Zhang, Swee Ching Tan
Summary: By integrating rigid protective blocks onto a soft textile substrate, a unique and soft-rigid unified structure (SRUS) inspired by crocodile skin is developed, achieving high cut-, stab-, and abrasion-resistant properties as well as flexibility, waterproofness, and breathability. The SRUS design combines the protective performance of rigid blocks and the wearability of soft textiles and intervals, resulting in excellent protective performance and wearability. This novel approach opens up new possibilities for manufacturing functional composite textiles for personal protective equipment.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Construction & Building Technology
Shaofeng Zhang, Ronggui Liu, Chunhua Lu, Yuan Gao, Jiajing Xu, Lu Yao, Yu Chen
Summary: This paper applies digital image correlation (DIC) technology to measure the thickness and elastic modulus of the interfacial transition zone (ITZ) and discusses the influence of water/cement (w/c) ratio on the ITZ. The results show that DIC technology is feasible for measuring the properties of the ITZ.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lu Yao, Xiaofei Cui, Hao Zhang, Huangcai Liu, Changzi Wang, Wentao He, Jiajing Xu, Jing Huang
Summary: This article investigates the axial compressive behavior of GFRP-repaired dented steel tubes through experimental and numerical methods. The results demonstrate that GFRP repair can improve the ultimate compression strength of steel tubes.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Civil
Lu Yao, Rong Guo, Hongmei Liu, Yan Ma, Wentao He, Hang Yu
Summary: This paper investigates the low-velocity impact behavior and residual tension performance of FMLs with different composite layer directions through experimental and numerical methods. The impact response and failure behavior of FMLs with various impact loadings are studied experimentally, and the post-impact tension behavior of FMLs with various damaged layers is characterized through tension tests. An integrated numerical model is developed to simulate the impact and post-impact tension behavior of FMLs, and its reliability and accuracy are demonstrated through comparison with experimental results.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Honghao Sun, Hongmei Liu, Junjie Tian, Rong Guo, Qian Xu, Lu Yao, Weimin Hong, Haiyan Li, Chenhui Zhu
Summary: This paper proposes a modeling, cost, and environmental benefit approach to construction and demolition waste (CDW) resource management. Based on the system dynamics (SD) theory and life cycle assessment (LCA), a combined policy is introduced to reduce illegal dumping and landfill behavior while improving recycling volume and environmental benefits. The model is constructed and validated using data from Nantong City, demonstrating its effectiveness and feasibility. The results show that a combined policy, including fines, subsidies, and charges, can effectively address the CDW management challenges.
Article
Engineering, Civil
Jian Xue, Weiwei Zhang, Jing Wu, Chao Wang, Hongwei Ma
Summary: This study integrates a plate-type local resonator with varying free boundaries within a plate to convert the initial low-order global vibration modes into localized vibration modes. A novel semi-analytical method is proposed to analyze the free vibration of the plate with thickness and displacement discontinuities. The results show that by applying free boundary conditions, the low-order localized vibration frequencies can be significantly reduced without affecting the low-order global frequencies.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Merve Tunay
Summary: In recent years, there has been an increasing number of studies on the mechanical properties of sandwich structures manufactured with the Fused Deposition Modeling (FDM) method. However, there is still a lack of experimental data on the mechanical characteristics of FDM-manufactured sandwich structures under different thermal aging durations. In this experiment, the energy absorption capabilities of sandwich structures with different core geometries were investigated under various thermal aging durations. The results showed that the core topology significantly influenced the energy absorption abilities of the sandwich structures.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Zi-qin Jiang, Zi-yao Niu, Ai-Lin Zhang, Xue-chun Liu
Summary: This paper proposes a crosssection corrugated plate steel special-shaped column (CCSC) that improves the bearing capacity and overall stability of structural columns by using smaller material input. Through theoretical analysis and numerical simulation, the overall stability of the CCSC under axial compression is analyzed. The design method and suggestions for the stability of CCSC are put forward. Compared with conventional square steel tube columns, the CCSC has obvious advantages in overall stability and steel consumption.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yong Zhang, Yangang Chen, Jixiang Li, Jiacheng Wu, Liang Qian, Yuanqiang Tan, Kunyuan Li, Guoyao Zeng
Summary: A hybrid TPMS method was proposed to develop a new TPMS structure, and the mechanical properties of different TPMS structures were studied experimentally and numerically. Results showed that the hybrid TPMS structure had higher energy absorption and lower load-carrying capacity fluctuation. Further investigations revealed that the topological shape and material distribution had significant influence on mechanical properties, and the hybrid additive TPMS structure exhibited significant crashworthiness advantage in in-plane crushing condition.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Tongfei Sun, Ye Liu, Kaoshan Dai, Alfredo Camara, Yujie Lu, Lijie Wang
Summary: This paper presents a series of experimental and numerical studies on the performance of a novel double-stage coupling damper (DSCD). The effects of damper configuration, friction-yield ratio (Rfy), and loading protocol on the hysteresis performance of the DSCD are investigated. The test results demonstrate that the arrangement of ribs in the DSCD increases its energy dissipation capacity. Numerical analysis reveals that the length of the friction mechanism and the clearance between the yield segment and the restraining system affect the energy dissipation and stability of the damper.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Jeonghwa Lee, Young Jong Kang
Summary: This study investigates the local buckling behavior and strength of I-shape structural sections by considering flange-web interactions through three-dimensional finite element analysis. The study provides a more reasonable estimation of local buckling strength by considering the ratio of flange-web slenderness and height-to-width ratio, and presents design equations for flange local and web-bend buckling coefficients.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yizhe Chen, Wenfeng Xiang, Qingsong Zhang, Hui Wang, Lin Hua
Summary: This study investigates the surface modification of a nickel plate to improve the bonding strength with carbon fiber-reinforced plastics (CFRP). The results show that different surface modification methods, including sandblasting, coupling agent treatment, and compound coupling agent treatment, significantly enhance the bonding strength of CFRP/Ni joints. The research provides insights into improving the connection between nickel and CFRP, as well as other heterogeneous materials.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Agha Intizar Mehdi, Fengping Zhang, Moon-Young Kim
Summary: A spatial stability theory of mono-symmetric thin-walled steel beams pre-stressed by spatially inclined cables is derived and its validity is demonstrated through numerical examples. The effects of initial tension, deviator numbers, inclined cable profiles, and bonded/un-bonded conditions on lateral-torsional buckling of the pre-stressed beams are investigated, with a specific emphasis on the effects of increasing initial tension.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Teng Ma, Jinxiang Wang, Liangtao Liu, Heng Li, Kui Tang, Yangchen Gu, Yifan Zhang
Summary: The structural response of water-back plate under the combined action of shock wave and bubble loads at water depths of 1-300 m was numerically investigated using an arbitrary Lagrange-Euler method. The accuracy of the numerical model was validated by comparing with experimental and theoretical results. The influences of water depth and length-to-diameter ratio of the charge on the combined damage effect were analyzed. The results show that as water depth increases, the plastic deformation energy of the water-back plate decreases, and the permanent deformation mode changes from convex to concave. When the charge has a large length-to-diameter ratio, the plastic deformation energy of the radial plate is higher than that of the axial plate, and the difference decreases with increasing water depth. Increasing the length-to-diameter ratio enhances the combined damage effect in the radial direction in deep-water environments.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiu-Yun Li, Ben Young
Summary: This paper investigates the flexural performance of CFS zed section members bent about the neutral axis parallel to the flanges through experimental and numerical analysis. The results show that the current direct strength method generally provides conservative predictions for the flexural strength of unstiffened zed section members, but slightly unconservative design for edge-stiffened zed section beams. The nominal flexural strengths of zed section members with edge stiffeners were found to be underestimated by 17% to 21% on average. Modified DSM formulae are recommended for the design of CFS zed section beams.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Weinan Gao, Bo Song, Xueyan Chen, Guochang Lin, Huifeng Tan
Summary: This paper presents a precise method for predicting deformation in large-scale inflatable structures, utilizing finite element modeling and laser scanning technique. The study shows a good agreement between the predictive model and non-contact measurement results.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Fei Gao, Zongyi Wang, Rui Zhu, Zhenming Chen, Quanxi Ye, Yaqi Duan, Yunlong Jia, Qin Zhang
Summary: This research investigates the mechanical properties of high-strength ring groove rivet assemblies and the load resistances of riveted T-stubs. Experimental tests reveal that Grade 10.9 rivets have higher yield strength and strain, and lower ultimate strain, making them suitable for high-strength ring groove rivet connections. Increasing the rivet diameter benefits the T-stubs, while increasing the flange thickness is not always advantageous. The Eurocode 3 method is not suitable for T-stubs connected through ring groove rivets, while the Demonceau method is conservative.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Shangchun Jiang, Liangfeng Sun, Haifei Zhan, Zhuoqun Zheng, Xijian Peng, Chaofeng Lue
Summary: This study investigates the bending behavior of two-dimensional nanomaterials, diamane and its analogous structure TBGIB, through atomistic simulations. It reveals that diamane experiences structural failure under bending, while TBGIB bends elastically before undergoing structural failure. The study provides valuable insights for the application of these materials in flexible electronics.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiang Zhang, Jianian Wen, Qiang Han, Hanqing Zhuge, Yulong Zhou
Summary: In this study, the mechanical properties of Q690 steel H-section columns under bi-directional cyclic loads are investigated, considering the time-varying characteristics of corrosion. A refined finite element (FE) model is built to analyze the degradation of mechanical property and failure mechanisms of steel columns with different design parameters during the whole life-cycle. The study proposes a quantitative calculation method for the ultimate resistance and damage index of steel columns, taking into account the ageing effects. The findings emphasize the importance of considering the ageing effects of steel columns in seismic design.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yuda Hu, Qi Zhou, Tao Yang
Summary: The magneto-thermo-elastic coupled free vibration of functionally graded materials cylindrical shell is investigated in this study. The vibration equation in multi-physical field is established and solved using the Hamilton principle and the multi-scale method. The numerical results show that the natural frequency is influenced by various factors such as volume fraction index, initial amplitude, temperature, and magnetic induction intensity.
THIN-WALLED STRUCTURES
(2024)