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Journal articles on the topic 'Sandwich structure'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Junaedi, Harri, Marwa A. Abd El-baky, Mahmoud M. Awd Allah, and Tamer A. Sebaey. "Mechanical Characteristics of Sandwich Structures with 3D-Printed Bio-Inspired Gyroid Structure Core and Carbon Fiber-Reinforced Polymer Laminate Face-Sheet." Polymers 16, no. 12 (2024): 1698. http://dx.doi.org/10.3390/polym16121698.

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The gyroid structure is a bio-inspired structure that was discovered in butterfly wings. The geometric design of the gyroid structure in butterfly wings offers a unique combination of strength and flexibility. This study investigated sandwich panels consisting of a 3D-printed gyroid structure core and carbon fiber-reinforced polymer (CFRP) facing skin. A filament fused fabrication 3D printer machine was used to print the gyroid cores with three different relative densities, namely 10%, 15%, and 20%. Polylactic acid (PLA) was used as the printing material for the gyroid. The gyroid structure wa

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2

Krzyżak, Aneta, Michał Mazur, Mateusz Gajewski, Kazimierz Drozd, Andrzej Komorek, and Paweł Przybyłek. "Sandwich Structured Composites for Aeronautics: Methods of Manufacturing Affecting Some Mechanical Properties." International Journal of Aerospace Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/7816912.

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Sandwich panels are composites which consist of two thin laminate outer skins and lightweight (e.g., honeycomb) thick core structure. Owing to the core structure, such composites are distinguished by stiffness. Despite the thickness of the core, sandwich composites are light and have a relatively high flexural strength. These composites have a spatial structure, which affects good thermal insulator properties. Sandwich panels are used in aeronautics, road vehicles, ships, and civil engineering. The mechanical properties of these composites are directly dependent on the properties of sandwich c

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3

Lin, Zhengjie, Hengliang Liang, and Hongfei Zhou. "Forming pressure of PMI foam sandwich structure." Journal of Physics: Conference Series 2566, no. 1 (2023): 012040. http://dx.doi.org/10.1088/1742-6596/2566/1/012040.

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Abstract In this study, the performance of A-reinforced sandwich structures made with polymethacrylimide (PMI) foam material is explored. The research focuses on comparing two forming methods, bonding and co-curing. It also tests the static properties of sandwich test pieces under different forming pressures. It reveals that the foam sandwich structure formed under the 0.15 MPa bonding process outperforms the rest regarding static properties. These findings provide valuable insights into the optimal structure-forming process for PMI foam sandwiches, paving the way for future advancements in th

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4

Hossain, Forhad, Md Arifuzzaman, Md Shariful Islam, and Md Mainul Islam. "Thermo-Mechanical Behavior of Green Sandwich Structures for Building and Construction Applications." Processes 11, no. 8 (2023): 2456. http://dx.doi.org/10.3390/pr11082456.

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In this work, three different types of sandwich structures were manufactured, each using a Formica sheet (a paper-based sheet) as the skin and perlite/sodium silicate foam as the core, with or without a paper honeycomb. The sandwich structures were fabricated by attaching the Formica sheets on both sides of a paper honeycomb core panel, a perlite/sodium silicate foam core panel, and a perlite/sodium silicate foam-filled honeycomb core panel. The flexural characteristics were studied by a three-point bending test and the thermal conductivity was measured using Lee’s thermal conductivity apparat

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5

Kozak, Janusz. "Joints Of Steel Sandwich Structures." Polish Maritime Research 28, no. 2 (2021): 128–35. http://dx.doi.org/10.2478/pomr-2021-0029.

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Abstract Steel sandwich structures are perceived as alternatives to single-skin welded structures in the shipbuilding industry due its advantages like significant reduction of mass in relation to typical single skin structure. However, beside problems with their strength properties itself, applications in real structures requires of solving the problem of joining, both for connection sandwich to sandwich as well as sandwiches to single-shell structures. Proper design of joints is connected with some factors like lack of attempt to interior of panel, introduction of additional parts and welds w

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Chang, Bianhong, Zhenning Wang, and Guangjian Bi. "Study on the Energy Absorption Characteristics of Different Composite Honeycomb Sandwich Structures under Impact Energy." Applied Sciences 14, no. 7 (2024): 2832. http://dx.doi.org/10.3390/app14072832.

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A honeycomb structure is a sandwich structure widely used in fuselage, among which the hexagonal honeycomb core is the most widely used. The energy absorption characteristics and impedance ability of the structure are the main reasons that directly affect the energy absorption characteristics of the honeycomb sandwich structure. Therefore, it is necessary to study the out-of-plane mechanical properties of the composite honeycomb sandwich structure. Based on the numerical simulation results, the energy absorption characteristics of several composite honeycomb sandwich structures are verified by

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7

Feng, Yixiong, Hao Qiu, Yicong Gao, Hao Zheng, and Jianrong Tan. "Creative design for sandwich structures: A review." International Journal of Advanced Robotic Systems 17, no. 3 (2020): 172988142092132. http://dx.doi.org/10.1177/1729881420921327.

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Sandwich structures are important innovative multifunctional structures with the advantages of low density and high performance. Creative design for sandwich structures is a design process based on sandwich core structure evolution mechanisms, material design method, and panel (including core structure and facing sheets) performance prediction model. The review outlines recent research efforts on creative design for sandwich structures with different core constructions such as corrugated core, honeycomb core, foam core, truss core, and folded cores. The topics discussed in this review article

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Kausar, Ayesha, Ishaq Ahmad, Sobia A. Rakha, M. H. Eisa, and Abdoulaye Diallo. "State-Of-The-Art of Sandwich Composite Structures: Manufacturing—to—High Performance Applications." Journal of Composites Science 7, no. 3 (2023): 102. http://dx.doi.org/10.3390/jcs7030102.

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This cutting-edge review highlights the fundamentals, design, and manufacturing strategies used for sandwich composites. Sandwich composite structures have the advantages of light weight, high strength, impact resistance, stability, and other superior features for advanced applications. In this regard, different core materials have been used in the sandwich composite structures, such as cellular polymer foam, metallic foam, honeycomb, balsa, tubular, and other core geometries. Among these, honeycomb sandwich composite materials have been effectively applied in space engineering, marine enginee

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9

Fu, Yibin, Jun Zhou, and Xiaosheng Gao. "Sandwiched hollow sphere structures: A study of ballistic impact behavior using numerical simulation." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 12 (2013): 2068–78. http://dx.doi.org/10.1177/0954406213515857.

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Sandwiched hollow sphere structure may have the potential to provide better ballistic impact protection as compared with monolithic plate based on the same weight and impact area. In the previous study of a sandwiched hollow sphere structure by the authors, a novel unit cell was created as a basic building unit of the structure, the tumbling effect was observed for significant impact energy absorption, and the existence of an optimal yield stress or hardness was proved for maximizing the impact energy absorption. However, the impact energy absorption ability of the sandwiched hollow sphere str

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Wang, Dong-Mei, and Rui Yang. "Investigation of vibration transmissibility for paper honeycomb sandwich structures with various moisture contents." Mechanics & Industry 20, no. 1 (2019): 108. http://dx.doi.org/10.1051/meca/2019002.

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Vibration transmissibility is an important factor to characterize the vibration absorption performance of cushioning packaging materials during transportation. Reasonable prediction of vibration transmissibility can guide antivibration design and reduce packaging cost. As a kind of green cushioning material, paper honeycomb sandwich structure is widely used in transport packaging because of its good machinability. But at the same time, it also has strong water absorption capacity. To a great extent, the vibration transmissibility of paper honeycomb sandwich structure may be affected by ambient

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11

Zhang, Zhen, Jian Guang Zhang, Xiu Zhi Liu, Yong Hai Wen, and Shao Bo Gong. "Numerical and Experimental Studies of Composites Sandwich Structure with a Rectangular Cut-Out." Applied Mechanics and Materials 395-396 (September 2013): 891–96. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.891.

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Numerical and experimental study on honeycomb sandwich structure with a rectangular cut-out were carried out in this paper. Two designs were presented, with using a U-shaped sandwich structure or a combination of two separate sandwiches. Finite element models were developed and calculated using MSC.NASTRAN code by means of linear analysis and non-linear incremental deformation analysis. Compared with linear analysis, non-linear analysis was more suitable to evaluate the ability of sandwich structure with cut-out to resist compressive load. The results obtained from non-linear solution were ver

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12

Wang, Dong Mei. "Evaluation Equation of the Flat Compression Properties of Corrugated Sandwich Structure." Advanced Materials Research 189-193 (February 2011): 202–7. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.202.

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The flat compression properties of corrugated sandwich structure are an important factor to evaluate their cushioning properties. At present, more research has been made on the mechanical properties in the cross direction (CD) and machine direction (MD), but less has been made in the flat compression direction. Selecting corrugated paperboards as samples, we analyzed the flat compression properties of the corrugated sandwich structure and explored the critical stress which is a key element for evaluating the cushioning properties based on theory and experiment. It is convenient to evaluate the

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13

Sharif, Umer, Bei Bei Sun, Peng Zhao, Dauda Sh Ibrahim, Orelaja Oluseyi Adewale, and Aleena Zafar. "Dynamic Behavior Analysis of the Sandwich Beam Structure with Magnetorheological Honeycomb Core under Different Magnetic Intensities: A Numerical Approach." Materials Science Forum 1047 (October 18, 2021): 31–38. http://dx.doi.org/10.4028/www.scientific.net/msf.1047.31.

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In this article a sandwich beam structure with honeycomb core filled of MRE (magnetorheological elastomer) with different ratios of Elastomer and iron particles is proposed. Modal response for structures with Nylon and Resin8000 honeycomb core filled with MRE and sandwiched between aluminum face sheets were analyzed and compared for two different ratios of MRE by placing magnets at free end and center of the structure. The force generated by magnets on the sandwich beam structure was calculated using ANSYS EDT and the modal response of the structure was then observed under generated magnetic f

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14

Li, Xiang, Li Cheng Yu, You Hui Zhou, Yang Li, and Xun Zhang. "Numerical Simulation of New Class-Honeycomb Sandwich Structure's Core." Advanced Materials Research 834-836 (October 2013): 1601–6. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1601.

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As the sandwich structure materials extensively used in the engineering field, the existing sandwich structure materials can not meet the requirements of engineering design gradually. New sandwich structural materials with efficient, energy-saving and easy processing need to be developed urgently. Relying on the mature research results now on honeycomb sandwich structure, the class-honeycomb sandwich structure is put forward for the first time, meanwhile, innovate configuration in the structure. Based on this, the paper analyzes the mechanics properties of the structure and the results showed

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15

Xu, Jinglin, Jianqing Liu, Wenbin Gu, Xin Liu, and Tao Cao. "Shock Wave Attenuation Characteristics of Aluminum Foam Sandwich Panels Subjected to Blast Loading." Shock and Vibration 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/2686389.

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Comparative experiments were conducted with two different structures to study the mechanism of aluminum foam sandwich attenuating blast shock wave. The sandwich structure is composed of “steel–aluminum foam–steel,” and the mild steel structure is composed of “steel–steel.” In the experiment, the polyvinylidene fluoride transducers were used to directly test the load of stress wave between different interfaces of sandwich and mild steel structures. The strain of back sheet was simultaneously measured using high-precision strain gauge. The accuracy of the test results was verified by Henrych’s f

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16

Wang, Xishu, Yuhang An, Nannan Dou, and Zhengbin Wu. "The peeling strength analysis of sandwich structure with cohesive element model." ITM Web of Conferences 47 (2022): 03016. http://dx.doi.org/10.1051/itmconf/20224703016.

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In this study, cohesive element models are applied to the strength analysis of the sandwich structure. As the sandwich structures have been used increasingly in the field of automotive light-weighting, the strength analysis of the sandwich structures becomes an important research topic. Cohesive Zone Models (CZMs) can be used to predict the initiation and propagation of the material cracks. Therefore, the peeling strength of the sandwich structure is calculated and analyzed by the traction-separation law with various CZMs. Experiments have been performed to verify the effectiveness of the sand

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17

Jianfei, Li, Xu Zejian, and Liu Yan. "Damage effect of composite sandwich structure under shock wave loading." Journal of Physics: Conference Series 2891, no. 6 (2024): 062013. https://doi.org/10.1088/1742-6596/2891/6/062013.

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Abstract To investigate the damage effect of composite sandwich structure under shock wave loading, the damage experiment of composite sandwich structure under blast loading was carried out systematically. By studying the response process of the maximum deformation value and plastic deformation value of different composite sandwich structures under blast loading with the change of relative distance, a characterization method that measures the overall deformation of composite sandwich structure is proposed. The damage law of composite sandwich structure under blast loading and the failure mode

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18

Shifa, M., F. Tariq, and R. A. Baloch. "Effect of Carbon Nanotubes on Mechanical Properties of Honeycomb." Nucleus 54, no. 1 (2017): 1–6. https://doi.org/10.71330/thenucleus.2017.89.

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The present research paper discusses the effects of addition of carbon nanotubes on mechanical properties of hybrid honeycomb sandwich structure for high-tech applications. Hybrid honeycomb sandwich structure consists of aluminum honeycomb core sandwiched between multiscale (MWCNTs/CF) reinforced epoxy composite facing. Multiscale facing was fabricated through hand layup method followed by compression molding and curing. The sandwich panels were prepared through vacuum bagging technique and cured in oven. Three point bend test and compression test were performed to evaluate the mechanical perf

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Hujare, Pravin P., and Anil D. Sahasrabudhe. "Effect of Thickness of Damping Material on Vibration Control of Structural Vibration in Constrained Layer Damping Treatment." Applied Mechanics and Materials 592-594 (July 2014): 2031–35. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.2031.

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The reduction of noise and vibration is a major requirement for performance of any vibratory system. Passive damping technology using viscoelastic materials is classically used to control vibrations. Viscoelastic material among the damping materials is widely used to dissipate the structural vibration energy. Three-layer sandwich beams, made of two elastic outer layers and a viscoelastic layer sandwiched between them, are considered as damping structural elements. This paper presents the effect of thickness of constrained damping material on modal loss factor of vibrating structures. Measureme

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Chang, Bianhong, Zhenning Wang, and Guangjian Bi. "Study on the Impact Resistance of the Honeycomb Composite Sandwich Structure by a Fragment Flight Angle." Applied Sciences 14, no. 23 (2024): 11218. https://doi.org/10.3390/app142311218.

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At present, the typical targets in the air are mainly high-speed impact bodies such as fragments, which pose a great threat to aviation equipment such as drones. It is urgent to study the impact resistance of different initial conditions of fragments to honeycomb sandwich structures. The fragment impact experiment analyzes the fragment flight attitude, fragment power, failure mode, and impact resistance of the structure by changing the different impact velocities on the target plate. In order to study the damage mode and anti-damage performance of several composite honeycomb sandwich structure

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21

Wei, Dong, Shaoan Li, Laiyu Liang, Longfei Sun, and Yaozhong Wu. "Low-Velocity Impact Response of Sandwich Structure with Triply Periodic Minimal Surface Cores." Polymers 17, no. 6 (2025): 712. https://doi.org/10.3390/polym17060712.

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Triply periodic minimal surface (TPMS) sandwich structures were proposed based on the TPMSs. The test samples for the TPMS sandwich were prepared using Multi Jet Fusion (MJF) with PA12 as the base material. Their low-velocity impact responses were investigated using experimental tests and numerical simulation. The effect of structural parameters (relative density, panel thickness, impact energy, and TPMS core) on the impact performance of the sandwich structures was analyzed through parameter studies. The results indicate that the peak load and stiffness of the sandwich structure increase with

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22

Cui, Zhen, Jiaqi Qi, Yuechen Duan, et al. "Low-Velocity Impact Resistance of 3D Re-Entrant Honeycomb Sandwich Structures with CFRP Face Sheets." Polymers 15, no. 5 (2023): 1092. http://dx.doi.org/10.3390/polym15051092.

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Lightweight sandwich structures have been receiving significant attention. By studying and imitating the structure of biomaterials, its application in the design of sandwich structures has also been found to be feasible. With inspiration from the arrangement of fish scales, a 3D re-entrant honeycomb was designed. In addition, a honeycomb stacking method is proposed. The resultant novel re-entrant honeycomb was utilized as the core of the sandwich structure in order to increase the impact resistance of the sandwich structure under impact loads. The honeycomb core is created using 3D printing. B

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Santoso, Djarot Wahju, and Kris Hariyanto. "COMPARISON OF SANDWICH COMPOSITE WING STRUCTURE WITH BALSA WOOD (CASE STUDY OF UAV AIRCRAFT FIXED WING VTOL VX-2)." Vortex 3, no. 2 (2022): 98. http://dx.doi.org/10.28989/vortex.v3i2.1236.

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UAV aircraft with a fixed wing configuration with multi-rotor are aircraft capable of vertical take-off and landing (VTOL). In designing the wing structure of aircraft, the weight factor and the strength of the wing structure are factors that need to be considered. The use of sandwich composite materials on UAV wings is expected to be able to meet the requirements of UAV aircraft, namely having a light weight, having high rigidity and strength. In this study, a comparative analysis the strength of the sandwich composite wing structure with the balsa wood wing of the UAV VTOL VX-2 aircraft was

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Fomin, A., V. Koshuro, M. Fomina, A. Aman, and S. Palis. "Structure and characteristics of a thin-layer "aluminum - carbon nanotubes" sandwich structure." Journal of Physics: Conference Series 2086, no. 1 (2021): 012180. http://dx.doi.org/10.1088/1742-6596/2086/1/012180.

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Abstract The study describes a way to produce thin-layer sandwich structures containing layers of aluminum foil and an interlayer filler of carbon nanotubes (CNTs). To obtain a homogeneous structure of the composite, induction heat treatment was used combined with a device providing primary compression of the assembly. To determine the functional characteristics of sandwich structures, the homogeneity of their microstructure and surface conductivity were studied. It was found that the use of CNTs allowed increasing the surface conductivity by a factor of 8.3–9.5 compared to the sandwich struct

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Tian, Ce, Zhimin Tian, Xinwei Cao, and Shangwei Dong. "Lightweight design of composite sandwich corrugated structures based on variable density method." Journal of Physics: Conference Series 2808, no. 1 (2024): 012076. http://dx.doi.org/10.1088/1742-6596/2808/1/012076.

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Abstract For the lightweight design of composite sandwich corrugated structures, a new topology optimization design scheme is proposed using the variable density method. Multi-working conditions static analysis of the composite sandwich corrugated structure is carried out by finite element software. Then, the topology optimization is carried out by using the minimum flexibility method. Finally, the results of different working conditions are coupled to propose a new composite sandwich corrugated structure. The results indicate that the structure has a weight reduction of 34% and exhibits perio

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Wang, Yingjie, Shenghang Cai, and Qin Zhang. "Bending stiffness analysis of regular polyhedron sandwich structures." Journal of Physics: Conference Series 2842, no. 1 (2024): 012101. http://dx.doi.org/10.1088/1742-6596/2842/1/012101.

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Abstract As a new type of sandwich structure, regular polyhedron sandwich structure has excellent structure performances such as high bending resistance and energy-absorbing features. However, the current design process of regular polyhedron sandwich structures often ignores the influence of unit-cell parameters on structural bending stiffness. Based on origami geometry, this study analyzes the geometric characteristics of polyhedron unit-cell structures. A simulation model was established to analyze the bending performance of regular polyhedron sandwich structures. The influence of the number

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27

Sujiatanti, S. H., Achmad Zubaydi, and A. Budipriyanto. "Finite Element Analysis of Ship Deck Sandwich Panel." Applied Mechanics and Materials 874 (January 2018): 134–39. http://dx.doi.org/10.4028/www.scientific.net/amm.874.134.

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Recently various types of sandwich panel are applied for constructing bridge and ship structures. Sandwich panel is material that consists of lightweight core material and two metal faceplates. The application of sandwich panel in ship structures makes the structure less-complex and ship’s selfweight lighter because of the reduction of secondary stiffeners. This paper discusses sandwich panel that was fabricated using synthetic resin core material and two steel faceplates. This study is aimed to analyze stresses developed in the sandwich panel of 750 GT Ro-Ro ship car deck structure when it wa

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Wu, Hexiang, Jia Qu, and Linzhi Wu. "Experimental and Numerical Study on Impact Behavior of Hourglass Lattice Sandwich Structures with Gradients." Materials 16, no. 18 (2023): 6275. http://dx.doi.org/10.3390/ma16186275.

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The impact mechanical properties of graded hourglass lattice sandwich structures under impact compression were studied using experiments and numerical simulations. The influence of the gradient distribution on the deformation mode, peak load, and energy absorption capacity of the hourglass lattice sandwich structure under the same impact energy level, different impact masses, and different impact velocities is discussed. The results show that the difference in impact mass and velocity has a significant effect on the impact mechanical properties of the graded hourglass lattice sandwich structur

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Vinod, G. Patil, and L. Adasul Amruta. "Optimization and Design for Base Plate of Industrial Elevator." Journal of Recent Activities in Production 4, no. 1 (2019): 9–15. https://doi.org/10.5281/zenodo.2590930.

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A structural sandwich contents two thin face sheets made from highly stiffed and highly strong material such as metal or fiber composite bonded together called core. This type of construction is commonly used in low weight applications like as aircrafts or aero planes, marine applications and wind turbine blades. The sandwich structure panel has an upper and bottom face sheets are made of material like stainless steel and the core is made of material like mild steel. This type of structure is solid modeled in software ProE and the Finite Element analysis i.e. static structural analysis is done

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WEI, PEIXING, JINXIANG CHEN, YUE ZHANG, and LIJUN PU. "WOOD-BASED SANDWICH PANELS: A REVIEW." WOOD RESEARCH 66(5) 2021 66, no. 5 (2021): 875–90. http://dx.doi.org/10.37763/wr.1336-4561/66.5.875890.

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A sandwich panel with a high ratio of strength to weight is commonly used in aerospace, construction, packaging and other fields. Using a renewable material such as wood to make sandwich panels can achieve a perfect unity of material and structure. In view of the lackof systematic analyses of wood-based sandwich panels, this work reviewed the developmentof wood-based sandwich panels. Based on the core structure, these panels can be divided into hollow-core structures and solid-core structures. With the emergence of new materials and new technologies, new wood-based sandwich products had been c

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Siswanti, H., M. Musta’in, A. M. Mulananda, A. Nasrudin, and D. R. Aldara. "Influence of faceplate thickness reduction on the strength of sandwich structure under static compression loading." IOP Conference Series: Earth and Environmental Science 1423, no. 1 (2024): 012034. https://doi.org/10.1088/1755-1315/1423/1/012034.

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Abstract Sandwich structures are increasingly used to replace conventional stiffened plate ship structures. The sandwich plate thickness design is determined based on the strength index (R) value. The sandwich plate thickness design is flexible because the core and faceplate thicknesses can be changed according to the desired safety factor. This faceplate and core thickness difference has influenced structural strength, deformation, weight, and other structural characteristics. This study analysed the effect of different faceplate thicknesses on the performance of sandwich structures on barge

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Alshaaer, Mazen. "Stiffened Sandwich Beam Using Glass Fiber Reinforced Inorganic Phosphate Cement (IPC)." Greener Journal of Science, Engineering and Technological Research 4, no. 1 (2014): 9–16. https://doi.org/10.15580/gjsetr.2014.1.021014097.

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This paper deals with ordinary and stiffened sandwich beam using fiber reinforced Inorganic Phosphate Cement (IPC) with a polyurethane foam core. Novel IPC stiffeners are proposed and their performance to achieve composite stiffness of sandwich structures is investigated. Experimental and analytical methods are presented assuming that the specific response of beams in bending can be assimilated to elastic behaviour. This analysis method based on analysing a sandwich beam would be to treat it as I-beam. Three different structures of Sandwich beams with Inorganic Phosphate Cement (IPC) matrix co

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Li, Fangyi, Yuanwen Chen, and Dachang Zhu. "Revealing the Sound Transmission Loss Capacities of Sandwich Metamaterials with Re-Entrant Negative Poisson’s Ratio Configuration." Materials 16, no. 17 (2023): 5928. http://dx.doi.org/10.3390/ma16175928.

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Due to the influence of mass law, traditional lightweight sandwich structures have struggled to surpass solid structures in sound insulation performance. To this end, we propose an acoustic metamaterial structure with a sandwich configuration based on the re-entrant negative Poisson’s ratio (NPR) structure and systematically investigate its sound transmission loss (STL) performance under incident plane wave conditions. We used the acoustic impedance tube method to experimentally study the sound insulation performance of the re-entrant NPR sandwich structure under free boundary conditions, and

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Emi Nor Ain Mohammad, Nurul, Aidah Jumahat, and Mohamad Fashan Ghazali. "Impact Properties of Aluminum Foam – Nanosilica Filled Basalt Fiber Reinforced Polymer Sandwich Composites." International Journal of Engineering & Technology 7, no. 3.11 (2018): 77. http://dx.doi.org/10.14419/ijet.v7i3.11.15934.

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This paper investigates the effect of nanosilica on impact and energy absorption properties of sandwich foam-fibre composites. The materials used in this study are closed-cell aluminum (Al) foam (as the core material) that is sandwiched in between nanomodified basalt fiber reinforced polymer (as the face-sheets). The face sheets were made of Basalt Fibre, nanosilica and epoxy polymer matrix. The sandwich composite structures are known to have the capability of resisting impact loads and good in absorbing energy. The objective of this paper is to determine the influence of closed-cell aluminum

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Kulkarni, Dr V. A. "Design and Analysis of Weight Lifting Pallet with Respect to Sandwich Pattern of Pallet." International Journal for Research in Applied Science and Engineering Technology 10, no. 1 (2022): 1761–63. http://dx.doi.org/10.22214/ijraset.2022.40130.

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Abstract: Sandwich plates are made of face plates which are separated by core material. They are usually designed in such a way that the face plates carry the bending and in-plane loads, the face plates have relatively high stiffness and density. The core is designed to sustain shear loads; it has relatively low density and stiffness. The face plates and core can be made from various materials metals, composites, plastics, and organic materials but the core can also possess various topologies: a web, a honeycomb. A structural sandwich consists of two thin face sheets made up of stiff and power

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Zhang, Yong, Fenfang Yin, and Junwei Ma. "Experimental and Numerical Analysis of the Impact Resistance of Polyurethane Foam Aluminum-Concrete Sandwich Structures." Buildings 14, no. 11 (2024): 3573. http://dx.doi.org/10.3390/buildings14113573.

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The objective of this research paper is to examine the shock-absorption capabilities of sandwich structures that utilize polyurethane foam and aluminum as energy-absorbing materials. A series of drop weight impact tests were conducted on sandwich structures comprising polyurethane foam, aluminum, and concrete. The investigation encompasses variations in the thickness of the polyurethane foam-aluminum absorption layer, the impact height, and different structural combinations, coupled with numerical simulations. Results indicate that as the thickness of the polyurethane foam-aluminum energy abso

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Yan, Chang, Xu Ding Song, and Shuo Feng. "Aluminum Foam Sandwich with Different Face-Sheet Materials under Three-Point Bending." Applied Mechanics and Materials 872 (October 2017): 25–29. http://dx.doi.org/10.4028/www.scientific.net/amm.872.25.

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Aluminum foam sandwich structure is a new type of composite material with excellent mechanical and functional properties. As it is known that properties of aluminum foam sandwiches (AFS) vary if the foam core is sandwiched between different face sheets. To study the effects of face-sheet materials on the mechanical properties of AFS and enable a better understanding of the usage of such AFS structures under flexural load, AFS sandwiched by 6061-aluminum alloy face-sheets and 304 stainless steel face-sheets were fabricated and investigated under three-point bending by using WDW-T100 electronic

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Wang, Chun, Xuan Ming Zhang, and Chun Ying Tang. "Manufacturing Process of Large Scale Sandwich Structure with Variable Thickness of PMI Foam Core." Advanced Materials Research 299-300 (July 2011): 816–19. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.816.

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Composite sandwich structures are extensively used in the aerospace, wind power, sports equipment, shipbuilding, automotive and train locomotive industries in order to improve structure rigidity and reduce weight. The molding process of sandwich structure using glass cloth and fibre materials as panels has been reported in many literatures. However, few researches are found relative to the molding process of large scale sandwich structure with the characteristics of thin-walled aluminum alloy panels and variable thickness of Polymethacrylimide (PMI) foam cores. This paper describes a preformed

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Cai, Yingqiang, Xiaolong Wang, Fenglin Ouyang, et al. "Study on the Mechanical Properties of a Carbon-Fiber/Glass-Fiber Hybrid Foam Sandwich Structure." Materials 17, no. 9 (2024): 2023. http://dx.doi.org/10.3390/ma17092023.

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Considering the different structural strength requirements of different parts of fiberglass yachts, carbon fiber/glass fiber hybrid reinforcement can be applied to the skins of sandwich panels in special areas. This paper designs and prepares 12 foam sandwich panel samples composed of pure carbon fiber, a carbon fiber/glass fiber hybrid, pure glass fiber skin, and PVC and SAN foam sandwich, with reference to the layup structure of the outer panel of a fiberglass yacht. Through a comparative analysis of low-speed impact experiments, edge compression experiments, and short beam three-point bendi

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Baroiu, Nicușor, Elena Beznea, Gelu Coman, and Ionel Chirică. "Static and thermal behaviour of ship structure sandwich panels." Thermal Science, no. 00 (2019): 463. http://dx.doi.org/10.2298/tsci190531463b.

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The mechanical properties of certain flexible core materials of ship structure sandwich panels, having skins made of metallic or composite laminates may be significantly influenced by the temperature variations that may occur during the operational loading. At the same time, the improving knowledge of the behaviour of these panels in terms of bending strength and other stress / strain related aspects in various harsh conditions increases their superiority in terms of weight-to-strength ratio, high stiffness, easy to manufacture, acoustic and thermal insulation. In the paper, the behaviour of t

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Prabhakaran, S., V. Krishnaraj, Hemashree Golla, and M. Senthilkumar. "Biodegradation behaviour of green composite sandwich made of flax and agglomerated cork." Polymers and Polymer Composites 30 (January 2022): 096739112211036. http://dx.doi.org/10.1177/09673911221103602.

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Material experts are striving to use natural resources as skin and core in composite sandwiches to achieve light weight, biodegradability, and cost benefits. This paper reports one such newly developed green composite sandwich and its biodegradable behavior. The skin and core of newly developed sandwich are flax fiber and agglomerated cork respectively. This composite sandwich is manufactured by vacuum bagging technique in order to get higher volume fraction of fiber. The biodegradability testing of the composite sandwich has been executed by soil burial test. The verification of the same has

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Šuba, Oldřich, Ladislav Fojtl, Oldřich Šuba Jr., Libuše Sýkorová, Soňa Rusnáková, and Jitka Baďurová. "On Flexural Stiffness of Polymer Sandwich Walls." Materials Science Forum 862 (August 2016): 115–22. http://dx.doi.org/10.4028/www.scientific.net/msf.862.115.

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This paper deals with the flexural stiffness of sandwich structures based on fiberglass and polymeric foams. The influence of geometrical and material parameters on the resulting effective flexural stiffness of the sandwich structure is being studied experimentally, analytically and using FEM models. The effective elasticity module of the sandwich-structured element is being studied and it’s theoretical and model dependencies on the stiffness of the foam core are being investigated. These dependencies are then compared with experimentally observed values. This study shows it is necessary to pa

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Le, Vinh Tung, and Nam Seo Goo. "Thermomechanical Performance of Bio-Inspired Corrugated-Core Sandwich Structure for a Thermal Protection System Panel." Applied Sciences 9, no. 24 (2019): 5541. http://dx.doi.org/10.3390/app9245541.

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A skin structure for thermal protection is one of the most interesting components that needs to be considered in the design of a hypersonic vehicle. The thermal protection structure, if a dense structure is used, is heavy and has a large heat conduction path. Thus, a lightweight, high strength structure is preferable. Currently, for designing a lightweight structure with high strength, natural materials are of great interest for achieving low density, high strength, and toughness. This paper presents bio-inspired lightweight structures that ensure high strength for a thermal protection system

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Tian, Hong Wei, Hai Feng Chang, and Hong Jun Ye. "Progress in Foldcore Sandwich Manufacturing and Application." Key Engineering Materials 905 (January 4, 2022): 246–53. http://dx.doi.org/10.4028/www.scientific.net/kem.905.246.

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The sandwich structure with foldcore is a new type of structural material with light weight, high specific strength, high specific rigidity and multi-functional potential, which is connected with each other in core space, this kind of three dimensional structures can be formed by folding based on two dimensional materials. The main research achievements and characteristics of sandwich structure with foldcore in recent years are summarized and analyzed according to the lightweight and multi-functional requirements of aircraft structure in this paper. The configuration optimization scheme and fa

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Xiao, Pengfei, Chunping Zhou, and Yunfeng Luo. "Study on the influence of hole shapes on the fluid and mechanical properties of perforated honeycomb sandwich structures." Journal of Physics: Conference Series 2808, no. 1 (2024): 012074. http://dx.doi.org/10.1088/1742-6596/2808/1/012074.

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Abstract Due to the high load and heat transfer capacity, porous honeycomb sandwich structures are widely in engineering. However, in functional requirements, mass and heat transfer should be realized which results and perforated holes being applied in sandwich structures. The shape of the holes plays a crucial role in further improving the load-bearing and flow-resistance performance of the structure. In this study, the influence of hole shape on the flow resistance, permeability, and mechanical properties of perforated honeycomb sandwich structures are systematically studied. Five different

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DING, Zhendong, Hongshuang LI, and Xiaole GUAN. "Reliability analysis of composite sandwich structure for fuselage skin based on surrogate model." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 2 (2022): 360–68. http://dx.doi.org/10.1051/jnwpu/20224020360.

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Composite structures are characterized by multiple source uncertainties in mechanical properties, geometric dimension, etc., and multiple failure modes, which bring challenges to their design and application. In order to explore the reliability analysis method of composite sandwich structures with multi-source uncertainties and multi-failure modes, a parametric finite element model and an acoustic boundary element model were established for deterministic analysis of a fuselage skin sandwich structure. Considering the randomness of the mechanical properties of composite materials and the lamina

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ERYILDIZ, Meltem. "Estimation of three-point bending behavior using finite element method for 3D-printed polymeric sandwich structures with honeycomb and reentrant core." European Mechanical Science 6, no. 3 (2022): 196–200. http://dx.doi.org/10.26701/ems.1101832.

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Sandwich structures are known as ultra-light porous materials. Because the structure has advantages in terms of acoustics, fatigue, and impact resistance that conventional stiffened plates cannot match, it has become a popular material in aerospace, automotive, marine, windmill, and architectural applications. One promising method for decreasing production waste and enhancing flexural stress is to employ Additive Manufacture (AM) technologies for sandwich structure manufacturing. In this study, polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), and polyethylene terephthalate glycol

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Gu, Xuetao, Jiawen Li, Ji Huang, Yaoliang Ao, and Bingxiong Zhao. "Numerical Analysis of the Impact Resistance of Composite A-Shaped Sandwich Structures." Materials 16, no. 14 (2023): 5031. http://dx.doi.org/10.3390/ma16145031.

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This paper focuses on the finite element analysis simulation of the impact properties of composite sandwich structures made of carbon fiber-reinforced polymer lamina. In the existing studies, the composite sandwich structures with A-shaped cores have superior mechanical properties under quasi-static plane compression loads compared to W-shaped, Y-shaped, and X-shaped cores. However, there is limited research on the impact resistance of this structure. This paper studied the resistance of a composite A-shaped core structure to ballistic impact. Using ABAQUS/explicit finite element analysis soft

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Corigliano, Pasqualino, Giulia Palomba, Vincenzo Crupi, and Yordan Garbatov. "Stress–Strain Assessment of Honeycomb Sandwich Panel Subjected to Uniaxial Compressive Load." Journal of Marine Science and Engineering 11, no. 2 (2023): 365. http://dx.doi.org/10.3390/jmse11020365.

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The ship hull structure is composed of plates and stiffened panels. Estimating the maximum load-carrying capacity, or the ultimate strength, of these structural components is fundamental. One of the main challenges nowadays is the implementation of new materials and technologies to enhance the structural integrity, economy, safety and environmentally friendly design of the ship’s hull structure. A new design solution may be represented by aluminium alloy honeycomb sandwich structures, both as plane panels or stiffened ones, which are characterised by excellent impact-absorption capabilities an

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Wei, Yuhan, Ruixian Wu, Luming Zou, Niuniu Liu, and Xin Xue. "Vacuum Brazing Effect on the Interlayer Failure Behaviors of Elastic-Porous Sandwich Structure with Entangled Metallic Wire Mesh." Symmetry 14, no. 5 (2022): 977. http://dx.doi.org/10.3390/sym14050977.

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Particular attention has been given to the complexity of the elastic-porous sandwich structure with entangled metallic wire mesh (EMWM), which is a novel rigid-flexible heterogeneous and symmetrical material. The orthogonal experiment design for vacuum brazing was adopted for sensitivity analysis of the key fabrication process on the performances of an EMWM sandwich structure. The shear behaviors of the sandwich structures with different vacuum brazing parameters (e.g., heating rate, brazing temperature, and holding time) were analyzed by mechanical experiments and an interfacial microstructur

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