Article
Engineering, Civil
Dongying Liu, Da Chen, Jie Yang, Sritawat Kitipornchai
Summary: This paper investigates the buckling and free vibration analyses of axially functionally graded graphene reinforced nanocomposite beams, using different distribution patterns of GPLs and conducting a comprehensive parametric study. The analysis is based on theoretical derivations and model solutions, providing results consistent with existing solutions.
ENGINEERING STRUCTURES
(2021)
Article
Mechanics
H. M. Abo-bakr, R. M. Abo-bakr, S. A. Mohamed, M. A. Eltaher
Summary: This research utilized multi-objective shape optimization method to optimize the shape and volume fraction distribution of functionally graded microbeams, for the first time, to maximize the critical buckling loads and fundamental frequencies while minimizing mass and cost. The modified continuum model based on Euler-Bernoulli beam theory and particle swarm optimization were used to derive equilibrium equations and equations of motion for the nonuniform microbeams. Multiple optimization problems were studied to demonstrate the multi-objective optimal shape design of these microbeams.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Serkan Guler
Summary: This study focused on the free vibration analyses of centrifugally stiffened cracked beams made of functionally graded materials in the axial direction. The Rayleigh-Ritz method was used to analyze the influence of various parameters on natural frequencies. Results indicated that an increase in the ratio of crack depth to thickness led to a decrease in fundamental frequency parameters, with the highest natural frequency droop near the root of the beam for flap-wise and chord-wise vibrations.
ENGINEERING STRUCTURES
(2021)
Article
Mechanics
Baker Wael Abuteir, Djamel Boutagouga
Summary: This article examines the free vibration response of functionally graded cylindrical and spherical porous shells with temperature-dependent material properties. The effective material properties are determined using the rule of mixture with porosity phases. The equation of motion is derived based on a curved 8-node degenerated shell element formulation. The study focuses on two different material mixtures and investigates the influence of material constituents, power-law indexes, boundary conditions, radius to thickness ratio, porosity parameter, and temperature gradient on the natural frequencies.
Article
Mechanics
Hamza Chaabani, Said Mesmoudi, Lhoucine Boutahar, Khalid El Bikri
Summary: This work utilizes a numerical model called the High Order Continuation with Finite Element Method (HOC-FEM) to study the behavior of nonlinear geometric functionally graded material (FGM) sandwich plates under various nonuniform compressions. HOC-FEM is an efficient tool for analyzing nonlinear buckling and post-buckling phenomena.
Article
Acoustics
Enda Zhang, Jinping Zhang, Bohui Chen, Changsheng Liu, Yu Zhan
Summary: In this study, the application of laser ultrasonic in TC4/Inconel718 functionally graded material was investigated using the finite element method. The influence of material interfaces and the material component of transition layers on ultrasound was specifically studied. The results showed that material interfaces can enhance the amplitude of the Rayleigh wave while attenuating and scattering the longitudinal wave and shear wave. The material component of transition layers indirectly affected the increased amplitude of the Rayleigh wave. Additionally, the ultrasound velocity in the functionally graded material decreased with increasing propagation depth. This research provides a suitable method for detecting functionally graded materials and lays the groundwork for the use of laser ultrasonic in this field.
Article
Construction & Building Technology
Lenin Babu Mailan Chinnapandi, Jeyaraj Pitchaimani, Mohamed A. Eltaher
Summary: This manuscript presents a comprehensive model to study the vibro-acoustic behavior of functionally graded beams under thermal and mechanical loads, taking into account the effect of porosity. The numerical analysis and parametric studies reveal that the nature of porosity affects the sound radiation behavior.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Mechanics
E. F. Erdurcan, Y. Cunedioglu
Summary: This paper investigates the free vibration of an aluminum beam coated with imperfect and damaged functionally graded material, using polynomial function and classical lamination theory for modeling and finite element method for numerical solutions. A parametric study shows significant influences of porosity, crack depth, coating thickness, and polynomial function index on natural beam frequencies.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Mechanics
Koutoati Kouami, Mohri Foudil, Daya El Mostafa, Carrera Erasmo
Summary: A beam finite element model is proposed for static and free vibration analyses of FGM sandwich beams with viscoelastic nonlinear material behavior. Different viscoelastic frequency-dependent laws, Timoshenko 1st order, and Reddy's higher order shear models are used. The stiffness matrix is nonlinear and frequency dependent. The study shows that beam behavior is sensitive to the loss factor, and damping properties are nonlinearly dependent on the power law index. Boundary conditions affect vibration modes.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Khalid H. Almitani, M. A. Eltaher, Alaa A. Abdelrahman, Hanaa E. Abd-El-Mottaleb
Summary: This study introduces a comprehensive numerical dynamic finite element analysis for investigating the dynamic behavior and induced stresses of axially functionally graded rotating beams, revealing significant effects of material gradation index and rotating speed on dynamic behavior. The proposed computational procedure is verified by comparing results with existing literature, showing good agreement and potential application in the design of wind turbine systems.
STRUCTURAL ENGINEERING AND MECHANICS
(2021)
Article
Engineering, Civil
Thom Van Do, Duc Hong Doan, Nguyen Chi Tho, Nguyen Dinh Duc
Summary: This study investigates the thermal buckling of fractured functionally graded material plates using a phase-field model, demonstrating the difference in static stability response based on temperature-dependent and temperature-independent material mechanical properties. The research provides valuable information for scientists to choose the most accurate computation model.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2022)
Article
Mechanics
Abdelouahab Tati
Summary: The buckling behavior of functionally graded rectangular plates under mechanical and thermal loading are investigated using a four-node finite element based on a simple high-order shear deformation theory. The proposed model eliminates the need for shear correction factors by introducing the assumed natural shear strain technique to reduce shear locking phenomenon. The study also considers the effects of different factors on the buckling behavior of the plates.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Thermodynamics
Quoc-Hoa Pham, Van Ke Tran, Trung Thanh Tran, Trung Nguyen-Thoi, Phu-Cuong Nguyen, Van Dong Pham
Summary: This article presents a finite element method based on a quasi-3D nonlocal theory to study the free vibration of functionally graded material nanoplates on an elastic foundation in a thermal environment. The study compares numerical results with previous research to verify accuracy and investigates the effects of various parameters on the free vibration of nanoplates.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Ahmed Amine Daikh, Mohammed Sid Ahmed Houari, Mohamed Oujedi Belarbi, Snehashish Chakraverty, Mohamed A. Eltaher
Summary: This article presents a comprehensive analysis of the static buckling stability and static deflection of axially single-walled functionally graded carbon nanotubes reinforced composite plates with temperature-dependent material properties graded by different functions. A new higher order shear deformation theory is proposed, and numerical results show the influences of various parameters on the static behavior of the composite plates.
ENGINEERING WITH COMPUTERS
(2022)
Article
Physics, Multidisciplinary
R. Salmani, R. Gholami, R. Ansari, M. Fakhraie
Summary: This study investigates the nonlinear postbuckling behavior of functionally graded porous cylindrical shells reinforced with graphene nanoplatelets (GNPs). It considers the smooth variation of GNP and porous distribution patterns through the thickness, and calculates effective material properties using a micromechanical method. The study utilizes the Ritz method and Airy function to analyze the nonlinear postbuckling behavior under axial and radial compressions, and examines the effects of various parameters on buckling loads and postbuckling behavior.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Multidisciplinary Sciences
Rahmat Kazemi Firouzjaei, Reza Attarnejad, Rohollah Abbasi Shanbehbazari, Fardad Aala
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2015)
Correction
Multidisciplinary Sciences
Rahmat Kazemi Firouzjaei, Reza Attarnejad, Rohollah Abbasi Shanbehbazari, Fardad Aala
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2015)
Article
Construction & Building Technology
Faramarz Khoshnoudian, Reza Attarnejad, Farzane Paytam, Ehsan Ahmadi
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS
(2015)
Article
Oceanography
Amirhossein Bagheri, Stewart Greenhalgh, Ali Khojasteh, Mohammad Rahimian, Reza Attarnejad
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2016)
Article
Mechanics
Shabnam Jandaghi Semnani, Reza Attarnejad, Rahmat Kazemi Firouzjaei
Article
Multidisciplinary Sciences
Zahra Pachenari, Reza Attarnejad
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2014)
Article
Multidisciplinary Sciences
Zahra Pachenari, Reza Attarnejad
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2014)
Article
Engineering, Mechanical
Reza Attarnejad, Akbar Pirmoz
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2014)
Article
Materials Science, Multidisciplinary
Ahmad Shahba, Reza Attarnejad, Hossein Zarrinzadeh
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2013)
Article
Acoustics
Saba Golchin, Reza Attarnejad, Shahram Vahdani
SHOCK AND VIBRATION
(2018)
Article
Engineering, Civil
Koosha Aghazadeh, Reza Attarnejad
WATER RESOURCES MANAGEMENT
(2020)
Article
Engineering, Civil
Hamid Asadi-Ghoozhdi, Reza Attarnejad
Article
Mechanics
Nima Hosseinian, Reza Attarnejad
Summary: This paper proposes a new efficient and conforming rectangular finite element to analyze thin plates with arbitrary variation of thickness along both edges. The shape functions of this element are derived by multiplying the shape functions of non-prismatic Euler-Bernoulli beam with basic displacement functions. To ensure C-1 consistency along the element edges, twist is added to the conventional degrees of freedom, resulting in an element with 16 degrees of freedom. The proposed element is used to solve various static and dynamic problems, and it is found that the new formulation converges with fewer elements compared to existing finite elements, making it competitive in terms of both accuracy and economy.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2023)
Article
Engineering, Ocean
Amirhossein Bagheri, Ali Khojasteh, Mohammad Rahimian, Stewart Greenhalgh, Reza Attarnejad
APPLIED OCEAN RESEARCH
(2017)
Article
Engineering, Multidisciplinary
A. Bagheri, A. Khojasteh, M. Rahimian, R. Attarnejad
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)
