Article
Construction & Building Technology
Yunfei Deng, Rui Tian, Ang Hu, Huapeng Wu, Nan Zhou, Gang Wei
Summary: This paper investigates the impact resistance of S-shaped glass fiber composite foldcore sandwich structures and explores the influence of face sheet thickness and core thickness on the impact resistance of the sandwich structure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Mechanics
Keyu Zhu, Xitao Zheng, Cong Zhang, Niu Chen, Yagang Han, Leilei Yan, M. Quaresimin
Summary: A novel all-composite sandwich panel with channel core was proposed to enhance compressive strength and energy absorption characteristics. Experimental and numerical analysis results showed that the proposed structure exhibited better compressive strength and specific energy absorption compared to the traditional corrugated core sandwich panel. Further optimization of the structural efficiency through foam filling significantly increased the compressive strength and energy absorption.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Characterization & Testing
Sensen Li, He Wang, Huguang He, Yang Liu, Hualin Fan
Summary: Filling EPS foamed concrete into the web-core of PSPs can significantly improve the bending rigidity and load capacity, as well as alter the failure pattern of the foam-filled PSPs.
Article
Chemistry, Physical
Tiago Silva, Luis Correia, Mozhdeh Dehshirizadeh, Jose Sena-Cruz
Summary: This article presents the development of an innovative hybrid sandwich panel for building rehabilitation, along with experimental tests and results. The experimental results show that the flexural behavior of the sandwich panel is almost linear until failure. The creep tests, conducted for a period of 180 days, showed an average creep coefficient of 0.27, and the creep model used accurately predicts the observed structural response.
Article
Engineering, Multidisciplinary
M. Proenca, M. Garrido, J. R. Correia, M. G. Gomes
Summary: The experimental study focused on the fire resistance behavior of composite sandwich floor panels made of glass-fiber reinforced polymer faces and polyurethane foam core. Results showed that with calcium silicate board protection, the fire resistance of the sandwich panels was significantly increased, highlighting the important impact of thermal insulation on their performance.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Construction & Building Technology
Salam Al-Rubaye, Taylor Sorensen, Marc Maguire
Summary: This paper introduces an iterative sandwich beam theory (ISBT) and a simplified version (SSBT) used to predict the elastic mechanics of sandwich wall panels, which have been validated with experimental data and finite-element analysis. The results show high accuracy in predicting cracking moments, deflections, and thermal loads, demonstrating the robustness of the presented methods.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Mechanical
Arameh Eyvazian, Majid Moeinifard, Farayi Musharavati, Seyed Ahmad Taghizadeh, Elsadig Mandi, Abdel Magid Hamouda, Trong Nhan Tran
Summary: The study demonstrated that utilizing resin pins to reinforce PVC foam core sandwich structures significantly increased their load-bearing capacity and energy absorption capability.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Mechanical
Jacob Marx, Afsaneh Rabiei
Summary: Steel-steel composite metal foam (SS-CMF) and composite metal foam core sandwich panels (SS-CMF-CSP) were manufactured and tested, showing that SS-CMF had higher strength compared to other metal foams due to its uniform porosities and strong bonding between the sphere wall and matrix. The SS-CMF-CSP, made by solid-state diffusion bonding stainless steel face sheets to a SS-CMF core, exhibited even higher strength than the bare SS-CMF, with the experimental results falling within the calculated upper and lower bounds for modulus of elasticity.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Materials Science, Composites
Gaojian Lin, Jiaqi Li, Fei Li, Pengwan Chen, Weifu Sun
Summary: This study proposes a method to improve the impact resistance of sandwich composite panels (SCPs) by filling the honeycomb core with shear-thickening gel (STG) mixed with silica particles. Experimental results show that the STG-filled honeycomb core effectively decreases penetration depth and reduces impact damage of the SCPs.
COMPOSITES COMMUNICATIONS
(2022)
Article
Construction & Building Technology
F. Tahmoorian, S. Nemati, P. Sharafi, B. Samali, S. Khakpour
Summary: Modular composite panels are widely used in prefabricated construction for floors and roofs. This paper investigates the scissors shear and punching behavior of an innovative structural sandwich panel, and the results show the first yield point in composite happens due to shear stress in foam, while the foam is ruptured on two surfaces at about 45 degrees due to scissors shear. The study also reveals that using studliner skins can improve the scissors shear strength and punching shear strength of panels significantly.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
M. P. Arunkumar, Vinod Bhagat, Qian Geng, Yueming Li, Jeyaraj Pitchaimani
Summary: This paper provides an exact solution for the vibro-acoustic response of Magneto-electro-elastic (MEE) composite plate and sandwich panels with MEE facings. It develops the governing equation of motion using Hamilton's principle with consideration of the third-order shear deformation theory. The analysis includes the influences of electric and magnetic potential on the vibro-acoustic response of various types of truss core and honeycomb core sandwich panels.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Claudia Sergi, Fabrizio Sarasini, Pietro Russo, Libera Vitiello, Enrique Barbero, Sonia Sanchez-Saez, Jacopo Tirillo
Summary: This study aims to provide a thorough understanding of the impact behavior of agglomerated cork and the resulting sandwich structures. The results show that agglomerated cork, when used as core material, can improve its impact resistance and approach the performance of polyvinyl chloride foam.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Composites
Fatih Balikoglu, Tayfur K. Demircioglu, Akin Atas
Summary: This paper presents a rigorous study on the flexural behavior of symmetric and asymmetric marine sandwich beams comprised of PVC foam core and glass fiber composite face-sheets. The study investigates the effects of mid-plane asymmetry, stacking sequence, fabric weight, and core type on the failure mode, bending rigidity, and strength of the sandwich composites.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Engineering, Mechanical
Giuseppe Marannano, Bernardo Zuccarello
Summary: This study investigated the optimal configuration of an end adhesively bonded double-lap joint with various influence parameters, and concluded that in practical applications, the best joint configuration is achieved by using a CFRP insert with an overlap length approximately double the theoretical value.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Polymer Science
Ahmed D. Almutairi, Yu Bai, Wahid Ferdous
Summary: Studies have shown that selecting the right core materials improves the overall performance of sandwich structures. This study investigated the bending performance of GFRP softwood sandwich beams with adhesive connections for prefabricated building construction. Experimental and numerical analyses were carried out to evaluate load capacity, failure modes, bending stiffness, and composite action. Results showed that changing the orientation of timber fibers and using adhesive bonding enhanced the structural performance.
Article
Mechanics
A. Lopatin, E. Morozov, A. Shatov
Summary: This paper considers the buckling of a biaxially compressed anisogrid stiffened composite cylindrical panel with clamped edges. The analysis is based on modeling and using the engineering theory to derive an analytical formula for the critical compressive buckling load. The results of calculations have been verified by finite-element analyses.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Engineering, Mechanical
A. Lopatin, E. Morozov
Summary: This work proposes an efficient method to calculate the fundamental frequency of a corner-supported composite sandwich plate with a lumped mass at its center. The method combines the Hamilton principle and the Rayleigh-Ritz method to solve the dynamic problem of the panel. The results were successfully verified through comparisons with finite-element computations, demonstrating the efficiency of the proposed methodology.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Civil
Caizheng Wang, Hongxu Wang, Krishna Shankar, Evgeny V. Morozov, Paul J. Hazell
Summary: The study investigated the dynamic mechanical response of steel wire mesh subjected to low-velocity impact loading using experimental and numerical methods. Factors such as impact energy, impactor's mass and size, and strength differences between weft and warp wires were found to influence the extent of damage and mechanical performance of the wire mesh specimens under different loading conditions. Experimental results revealed that peak contact force increased with impact energy until wire breakage occurred, after which the peak force remained almost unchanged.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
A. Lopatin, E. Morozov
Summary: The study investigated the buckling behavior of an orthotropic composite plate on an elastic orthotropic foundation with nonlinear transverse displacement, proposing a new model for more accurate calculation of critical buckling load, which yielded lower values compared to the traditional model. The finite element analysis confirmed the validity of the calculations, showing that the proposed model enables more accurate determination of critical load.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Nicholas Sirach, Scott T. Smith, Tao Yu, Ahmed Mostafa
Summary: The study shows that FRP-confined multi-tube concrete columns exhibit excellent structural behavior under different parameters, with internal steel tubes outperforming aluminum tubes, and basalt FRP and GFRP jackets having similar effects. Increasing FRP thickness improves the ultimate strength of the column.
COMPOSITE STRUCTURES
(2022)
Article
Thermodynamics
Yee Yan Lim, Ricardo Vasquez Padilla, Andreas Unger, Rodrigo Barraza, Ahmed Mostafa Thabet, Iman Izadgoshasb
Summary: This study proposed a self-tunable piezoelectric wind energy harvester that can adapt to the erratic nature of wind in the field by using a rotating base, demonstrating higher output power especially with the use of a square prism as the bluff body under typical urban wind conditions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Multidisciplinary
Zi Sheng Tang, Yee Yan Lim, Scott T. Smith, Ahmed Mostafa, Ah Choi Lam, Chee Kiong Soh
Summary: This study presents the first field application of electromechanical impedance (EMI) and wave propagation (WP) techniques for monitoring concrete curing, using smart aggregate (SA) sensors. The results obtained from EMI and WP techniques were consistent and comparable to destructive compression and non-destructive ultrasonic pulse velocity (UPV) tests. The study also presents semi-analytical models for quantifying the compressive strength and modulus of elasticity of concrete at different curing durations.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2023)
Article
Construction & Building Technology
Husam Alsanat, Shanmuganathan Gunalan, Perampalam Gatheeshgar, Keerthan Poologanathan, Ahmed Mostafa Thabet
Summary: This study investigates the effect of web openings on the web crippling strength of roll-formed aluminium lipped channel (ALC) sections. It is found that the web openings can significantly reduce the strength of the sections, both in unfastened and fastened conditions. Design equations are proposed and validated, and it is recommended to incorporate them into relevant standards.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Hongxu Wang, Dakshitha Weerasinghe, Paul J. Hazell, Damith Mohotti, Evgeny V. Morozov, Juan P. Escobedo-Diaz
Summary: This study investigates the impact behavior of UHMWPE textile composites under different matrix rigidities. Experimental and numerical methods were used to analyze the mechanical properties. It was found that the composites changed from membrane stretching mode to plate bending mode as the matrix rigidity and thickness increased. The flexible matrix composites had higher perforation resistance but larger deformation compared to the rigid matrix counterparts.
DEFENCE TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Matthew J. Donough, B. Gangadhara Prusty, Mitchell J. Van Donselaar, Evgeny V. Morozov, Hongxu Wang, Paul J. Hazell, Andrew W. Philips, Nigel A. St John
Summary: This work investigated the damage in thick glass-fibre/epoxy laminates caused by low velocity impacts. Experimental and numerical results showed that the impact damage was localized in the vicinity of the impactor contact area and included an interplay of various damage mechanisms. The highest impact damage resistance was obtained with the 0 degrees (in-plane) specimen due to the alignment of fibers to the impact loading direction.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Chemistry, Analytical
Iresha Erangani Piyarathna, Yee Yan Lim, Mahesh Edla, Ahmed Mostafa Thabet, Mustafa Ucgul, Charles Lemckert
Summary: In recent years, there has been considerable interest in harvesting energy from ultralow-frequency vibrations for wearable devices and wireless sensors. Conventional linear piezoelectric energy harvesters are often inefficient for practical applications due to their narrow operating bandwidth. This study proposes a novel multimode design, the bent branched beam harvester (BBBH), which enhances the output voltage and power for ultralow-frequency applications. Experimental results show that the BBBH outperforms conventional designs, achieving higher output voltages and power with a wider operating bandwidth.
Article
Energy & Fuels
Muhammad Kamran, Mahesh Edla, Ahmed Mostafa Thabet, Abdul Haseeb, Deguchi Mikio, Vinh Bui
Summary: This study investigates a complete model for a miniature excitation-powered piezoelectric generator, as well as the modes of operation and control of a full-bridge joule thief circuit. The proposed model reveals the dependence of the generator's power on mechanical excitation, acceleration, and frequency. It also defines the load behavior for power optimization. The integrated circuit, called FBRJT, combines a conventional full-bridge rectifier with a joule thief circuit for efficient AC-DC and DC-DC conversion.
Article
Nanoscience & Nanotechnology
Jianshen Wang, Daniel East, Evgeny V. Morozov, Hongxu Wang, Paul J. Hazell, Juan P. Escobedo-Diaz
Summary: This study investigated the mechanical response, microstructures, and failure mechanisms of additively manufactured Ti matrix composites with Ti2Ni and TiCx reinforcements under various loading rates. The results showed that the mechanical properties of the composites changed with the NCG fraction. The failure mechanisms involved tensile fracture of TiCx precipitates and shear of the Ti matrix. Composites with higher NCG content exhibited increased strength, reduced ductility, and lower strain rate sensitivity. The Ti-Ni-C composite showed enhanced strength without compromising ductility under high strain rate compression loading, making it a promising material for impact load applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Proceedings Paper
Engineering, Mechanical
A. Mostafa, D. G. S. Sanchez, N. Sirach, R. Padilla, H. Alsanat
Summary: Polyethylene is a widely used semi-crystalline polymer in various industrial applications, and understanding its mechanical behavior under different loading scenarios is crucial for its long-term performance. This study investigated the creep behavior of high-density polyethylene and ultra-high molecular weight polyethylene through experimental testing, analytical analysis, and numerical modeling. The results showed good agreement between the experimental, analytical, and numerical methods, indicating the potential use of finite element models to predict the serviceability of polyethylene products under prolonged exposure to constant loading conditions.
PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON NUMERICAL MODELLING IN ENGINEERING: NUMERICAL MODELLING IN MECHANICAL AND MATERIALS ENGINEERING, VOL 2, NME 2021
(2022)
Proceedings Paper
Engineering, Mechanical
Mohammad Ashraful Karim Chowdhury, M. Krid, Ahnaf Akif, A. Mostafa
Summary: This research focuses on developing deadlock prevention policies for AMS using structural analysis and reachability graph analysis, aiming to improve system performance and resource utilization.
PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON NUMERICAL MODELLING IN ENGINEERING: NUMERICAL MODELLING IN MECHANICAL AND MATERIALS ENGINEERING, VOL 2, NME 2021
(2022)
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)
