Article
Engineering, Mechanical
Lu Guo, Renwei Mao, Shiqiang Li, Zhifang Liu, Guoxing Lu, Zhihua Wang
Summary: This paper investigates the load-carrying capacity and collapse mechanisms of symmetrical and asymmetrical sandwich beams under quasi-static central load. The continuity equations and finite element simulations show good agreement in analyzing the postyield behavior of the beams under different mechanisms and conditions.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Materials Science, Composites
Longying Yang, Yongzhong Yang, Simin He, Guiyong Chen, Chenghong Ao, Wei Zhang
Summary: The repair angle significantly influences the bending strength recovery of scarf patch repaired composites, with an optimal repair angle technical parameter of 30:1 achieving up to 99.6% bending strength recovery. The simulation model accurately predicts the failure load of repaired honeycomb sandwich composites with different repair angles, with a maximum error of 4.99% and further optimization reducing the error to 4.49%. This model can effectively reduce the need for repeated experiments, optimize repair angles, and maximize the recovery of composite materials' initial performance.
PLASTICS RUBBER AND COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Mohamed S. Eisa, Mohamed E. Basiouny, Ahmed M. Youssef
Summary: The study shows that adding macro synthetic fibers to concrete can improve its load carrying capacity, with MSFRC slabs having significantly increased ultimate load carrying capacity compared to PCC slabs.
Review
Cardiac & Cardiovascular Systems
Lizhi Lv, Xinyue Lang, Simeng Zhang, Cheng Wang, Qiang Wang
Summary: The study compared the prognosis of single-, two- and three-patch repair for patients with supravalvar aortic stenosis (SVAS). Results showed that two-patch repair had the lowest rate of reintervention and relatively reasonable operation time.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2022)
Article
Materials Science, Composites
Gursahib Singh Bhatia, A. Arockiarajan
Summary: This study experimentally investigates external patch repair of woven carbon fiber-reinforced polymer laminates under fatigue loading. The results show that external patch repair significantly enhances the material's performance under fatigue loading and increases its lifespan.
POLYMER COMPOSITES
(2021)
Article
Construction & Building Technology
Ngoc Vinh Pham, Takeshi Miyashita, Kazuo Ohgaki, Yusuke Okuyama, Yuya Hidekuma, Takuya Harada
Summary: Several events involving the corrosion-induced damage of gusset plate connections of steel truss bridges have been reported worldwide recently. This study evaluated the remaining load-carrying capacity of a corroded gusset plate connection through loading tests and finite element method analyses, and proposed a repair method using carbon fiber-reinforced plastic sheets to recover the load-carrying capacity and improve the deformation performance of corroded connections.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Energy & Fuels
Chuanqiang Che, Baofeng Yan, Chujun Fu, Guannan Li, Chunxu Qin, Liqiang Liu
Summary: The relationship between cable current carrying capacity and temperature is crucial in the transmission and distribution network of power system. By using simulation analysis, the cable's carrying capacity can be improved by increasing cable spacing, improving convective thermal conductivity, and maintaining a low ambient temperature.
Article
Construction & Building Technology
Yu Bai, Jin Zhang, Hao Shen
Summary: The study investigated the residual compressive load-carrying capacity of CLT walls after one-side fire exposure through tests and theoretical deduction. The results showed that thicker walls had less reduction in residual capacity after fire, with eccentric compression being the main failure mode.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Computer Science, Artificial Intelligence
Jihwan Yoon, Bogyeong Lee, Jaeyoul Chun, Bosik Son, Hyunsoo Kim
Summary: This study investigates the effect of different types of load-carrying scenarios on the gait stability of ironworkers. The experiment was conducted under 15 different load-carrying conditions. The results show that increasing the weight of the load leads to an increase in the dynamic time warping (DTW) values, and there are significant differences in DTW values between bucket carrying and toolbox carrying above a certain weight (16 kg). The study also validates the correlation between DTW values and subjective perceived ratings.
ADVANCED ENGINEERING INFORMATICS
(2022)
Article
Engineering, Civil
Zhe Xiong, Anyang Chen, Lexian Chen, Yinglei Li, Jianian He, Lijuan Li, Xiaozhou Zou, Yu Qiu, Yunhai Luo
Summary: This paper presents a study on bolted ball-cylinder (BBC) joint, using finite element analysis to investigate the structural behavior, verifying the model's reliability through experimental results, and proposing empirical formulas to predict the ultimate load capacity.
Article
Environmental Studies
Hongman He, Liyin Shen, Siu Wai Wong, Guangyu Cheng, Tianheng Shu
Summary: This study develops a new method for assessing TRCC from the perspective of load-carrier, and establishes a TRCC evaluation system based on the dynamic relationship between the carrier and load of tourism resources. The proposed method is proved effective through an empirical study of Chongqing, and it reveals that the overload performance of TRCC can be dynamically monitored and predicted. By applying this method, tourism managers and policymakers can identify the factors that affect TRCC performance and take targeted policy measures.
TOURISM MANAGEMENT
(2023)
Article
Chemistry, Physical
Raheel Asghar, Muhammad Faisal Javed, Raid Alrowais, Alamgir Khalil, Abdeliazim Mustafa Mohamed, Abdullah Mohamed, Nikolai Ivanovich Vatin
Summary: This research introduces a novel AI-based gene expression programming approach for predicting the lateral load carrying capacity of RC rectangular columns under earthquake loading. Two analytical models were developed to compute the flexural and shear capacity of these columns, outperforming the ACI 318-19 design code in terms of performance and accuracy. Performance evaluation based on fitness indicators indicated superior results for the proposed models compared to the existing design standards.
Article
Environmental Sciences
Baozhong Zhang, Xiaolong Liu, Wenhao Wei, Xiquan Li, Huina Zhu, Lingyun Chen
Summary: Soil environmental safety is crucial for agricultural production and human health. This study analyzed soil samples from various areas in Henan Province for the presence of organophosphorus pesticides and synthetic pyrethroids and evaluated the soil carrying capacity. The study found that acephate and cyhalothrin exceeded the soil carrying capacity, and high ecological risks were observed in Shangqiu city.
ENVIRONMENTAL POLLUTION
(2024)
Article
Engineering, Civil
Zhen Sun, Dionysius M. Siringoringo, Yozo Fujino
Summary: Efficient and reliable load-carrying capacity evaluation of deficient bridges is crucial for maintenance and management. A new method based on displacement under moving vehicles was proposed and verified through numerical simulations and full-scale implementation, showing that it is more effective and economical than conventional methods.
ENGINEERING STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Jozef Prokop, Jaroslav Odrobinak, Matus Farbak, Vladimir Novotny
Summary: This paper presents an extensive study on the applicability of the demountable Bailey bridge system, focusing on its use in on-site freight transport and construction vehicles. The load-carrying capacity was calculated using numerical models and actual design codes, and recommendations for different arrangements of the bridge system were discussed.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Composites
Melih Korkmaz, Ramazan Karakuzu, Mehmet Korkmaz
Summary: Man-made fibers provide high strength and stiffness values for fiber-reinforced polymer composites, but they are not eco-friendly and difficult to recycle. Natural fiber reinforced composites (NFRC) are considered as a good alternative. This study investigates the effects of different weft densities of reinforcements on mechanical properties of composites.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Engineering, Mechanical
Huseyin E. Yalkin, Ramazan Karakuzu, Tuba Alpyddiz
Summary: This study investigates the impact behavior of foam core sandwich composite with different structural configurations. It is found that core stitching can be an alternative to facesheet stitching in terms of absorbed energy, and modifying the thickness can significantly reduce core/facesheet debonding area.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Materials Science, Characterization & Testing
Ilker Memis, Ramazan Karakuzu
Summary: This study investigates the high-velocity impact behavior of Ramor 500 armor steel through experimental and numerical methods. The mechanical properties of the material were determined through tensile tests at different temperatures, and Johnson-Cook parameters were obtained from Split Hopkinson Pressure Bar (SHPB) test data. Using these parameters, the same test was simulated using ANSYS Explicit Dynamic software. The results show that both the experimental and numerical results meet the NIJ LEVEL IIIA conditions, and the perforation characteristics of Ramor 500 were obtained.
Article
Materials Science, Characterization & Testing
Aidel Kadum Jassim Al-Shamary, Ramazan Karakuzu, Halis Kandas, Okan Ozdemir
Summary: In this study, laminated composites were designed with natural fiber reinforcement to improve the impact properties. Experimental results showed that the addition of palm fibers significantly enhanced the energy absorption capability and delayed the damage mode of the composite material.
Article
Materials Science, Characterization & Testing
Aidel Kadum Jassim Al-Shamary, Ramazan Karakuzu, Halis Kandas, Okan Ozdemir
Summary: The study focuses on manufacturing sandwich composites using palm and jute natural fibers with E-glass. It was found that the sandwich composite fabricated with palm fiber has a superior impact behavior in terms of maximum contact force compared to other configurations of sandwich composite.
Article
Materials Science, Multidisciplinary
Emre Erbil, Ramazan Karakuzu
Summary: This study reveals the fundamental steps for analyzing bolted laminated composite structures using advanced methods implemented in Fortran and Python. Friction and damage parameters for the composite material are verified using experimental data sources. The critical Cockroft-Latham ductile damage parameter of AISI 304L sheet material with its anisotropic properties is computed for design purposes. Good agreement is obtained between the analyzed parameters and external experimental references.
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Composites
Volkan Arikan
Summary: In this study, E-glass fibre-reinforced polypropylene and epoxy matrix composites were tested under low-velocity impact with 30 joules of energy, and the effects of thickness variation on impact performance in composite plates with different matrix structures were analyzed. The results revealed that thickness variation creates different impact responses in composites with different matrix materials.
PLASTICS RUBBER AND COMPOSITES
(2023)
Article
Materials Science, Composites
Mehmet Korkmaz, Ramazan Karakuzu
Summary: Hybridizing man-made fiber composites with natural fibers has been chosen for various applications, but the effects on out-of-plane mechanical properties and low temperature performance still need clarification. This study used E-glass and flax yarns to produce woven fabrics for intra- and inter-ply hybrid composites and conducted quasi-static indentation tests at different temperatures. Results showed that the mechanical properties of hybrid composites can be improved or decreased depending on the hybridization type. The temperature also profoundly affected the through-thickness properties and damage mechanisms of hybrid composites.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Volkan Arikan
Summary: This study investigated the effect of fabric parameters on crack propagation in plain-woven e-glass reinforced epoxy composite plates. The results showed that the yarn fiber volume fraction ratio, shear angle, and yarn spacing parameters had significant effects on the stress intensity factors and tear stress values. The study provides valuable insights for the design of composite materials.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Characterization & Testing
Volkan Arikan
Summary: This study examines the impact of infill patterns and densities on crack propagation behavior in additive manufactured parts. Three-point bending tests were conducted to obtain force-displacement data for specimens with various infill patterns, densities, and crack sizes. The results demonstrate that infill density has a significant influence on the mechanical properties and fracture characteristics of the parts. Higher infill densities enhance strength but reduce deformation tolerance, leading to a more sudden failure mode. These findings emphasize the importance of carefully selecting infill patterns and densities to optimize the mechanical performance of 3D-printed parts. Understanding these relationships is crucial for designing robust and reliable structures for diverse applications in additive manufacturing.
Article
Materials Science, Multidisciplinary
Emre Erbil, Ramazan Karakuzu
Summary: This study tested a unique assembly method using carbon fiber-reinforced plastic sleeves to improve the load-carrying capacity of single-lap joints. Advanced techniques were used to simulate the progressive degradation behavior of the material, resulting in significant improvements in failure indices, damage initiation force, and inter-plate clamp load.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Aidel Kadum Jassim Al-Shamary, Abdul Rahman N. Abed, Ramazan Karakuzu
Summary: This paper presents a study on the ballistic performance of E-glass/epoxy and S2-glass/epoxy composites through experimental and numerical methods. The composites were produced using vacuum assisted resin infusion molding method and subjected to ballistic impact tests. It was found that S2-glass/epoxy composite exhibited higher ballistic limit, specific absorbed energy, and absorbed energy density compared to E-glass/epoxy. The numerical results were in good agreement with the experimental results.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Physics, Multidisciplinary
Huseyin Erdem Yalkin, Ramazan Karakuzu, Tuba Alpyildiz
Summary: This study numerically investigates the low-velocity impact properties of sandwich composites with E-glass fiber/epoxy and PVC foam core, and compares the results with experimental data. The numerical simulations show good agreement with the experimental results.
Article
Materials Science, Multidisciplinary
Ramazan Karakuzu, Samet Kiyik, Halis Kandas
Summary: This study investigates the effects of temperature, impact energy, and specimen thickness on the low-velocity impact and compression-after-impact behaviors of composites. The results show that a decrease in temperature leads to an increase in maximum contact force, and thick specimens experience more impact damage as the impact energy increases. The strength of compression-after-impact decreases with temperature drop and impact energy increase, while it increases with specimen thickness.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
