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1

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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2

Ashraf, W., M. R. Ishak, M. Y. M. Zuhri, N. Yidris, and A. M. Ya’acob. "Experimental Investigation on the Mechanical Properties of a Sandwich Structure Made of Flax/Glass Hybrid Composite Facesheet and Honeycomb Core." International Journal of Polymer Science 2021 (March 10, 2021): 1–10. http://dx.doi.org/10.1155/2021/8855952.

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This research is aimed at developing the sandwich structure with a hybrid composite facesheet and investigate its mechanical properties (tensile, edgewise compression, and flexural). The combination of renewable and synthetic materials appears to reduce the weight, cost, and environmental impact compared to pure synthetic materials. The hybrid composite facesheets were fabricated with different ratios and stacking sequence of flax and glass fibers. The nonhybrid flax and glass composite facesheet sandwich structures were fabricated for comparison. The overall mechanical performance of the sand
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3

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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4

Yi, Zhihui, Zhuo Wang, Dan Wu, and Ying Xue. "Tuning the Ferroelectric Response of Sandwich-Structured Nanocomposites with the Coordination of Ba0.6Sr0.4TiO3 Nanoparticles and Boron Nitride Nanosheets to Achieve Excellent Discharge Energy Density and Efficiency." Polymers 15, no. 17 (2023): 3642. http://dx.doi.org/10.3390/polym15173642.

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With the rapid development of new electronic products and sustainable energy systems, there is an increasing demand for electrical energy storage devices such as electrostatic capacitors. In order to comprehensively improve the dielectric, insulating, and energy storage properties of PVDF-based composites, sandwich-structured composites were prepared by layer-by-layer solution casting. The outer layers of the sandwich structure composite are both PVDF/boron nitride nanosheet composites, and the middle layer is a PVDF/Ba0.6Sr0.4TiO3 nanoparticles composite. The structural and electrical propert
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5

Lv, Lihua, Yaoli Huang, Jingrui Cui, Yongfang Qian, Fang Ye, and Yuping Zhao. "Bending properties of three-dimensional honeycomb sandwich structure composites: experiment and Finite Element Method simulation." Textile Research Journal 88, no. 17 (2017): 2024–31. http://dx.doi.org/10.1177/0040517517703602.

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This paper fabricated three-dimensional (3D) honeycomb sandwich structure fabrics with three different cross-section shapes on an ordinary loom by reasonable design with low cost. The 3D honeycomb sandwich structure composites were fabricated by the vacuum assisted resin transfer molding process. Then, the bending properties of 3D honeycomb sandwich structure composites with different cross-section shapes were tested. The results showed that the 3D honeycomb sandwich structure composite with a hexagonal cross-section shape had the maximum load, the 3D honeycomb sandwich structure composite wit
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6

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

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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8

Alshahrani, Hassan, Azzam Ahmed, Hashim Kabrein, and V. R. Arun Prakash. "Mechanical Properties Study on Sandwich Composites of Glass Fiber Reinforced Plastics (GFRP) Using Liquid Thermoplastic Resin, Elium®: Preliminary Experiments." Coatings 12, no. 10 (2022): 1423. http://dx.doi.org/10.3390/coatings12101423.

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Composite sandwich structures have been used in high performance applications such as wind turbine blades, due to their unique lightweight structure and superior mechanical properties. In the current study, a new liquid thermoplastic and thermoset resin were used to fabricate four different composite sandwich panels with two various foam types and densities. Composites made with epoxy resin are presented to comprehensively compare the mechanical properties of sandwich structures to elium resin. In the case of the mechanical properties and due to a new liquid thermoplastic resin, extensive comp
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9

Jiang, Xueliang, Zhijie Wang, Zhen Yang, Fuqing Zhang, Feng You, and Chu Yao. "Structural Design and Sound Absorption Properties of Nitrile Butadiene Rubber-Polyurethane Foam Composites with Stratified Structure." Polymers 10, no. 9 (2018): 946. http://dx.doi.org/10.3390/polym10090946.

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Sound absorbing composites with stratified structures, including double-layer and sandwich structures, were prepared through the combination of nitrile butadiene rubber (NBR) and polyurethane foam (PUFM). The effects of the thickness ratio of layers, different stratified structures and the variety of fillers on the sound absorption performance of the NBR-PUFM composites and the sound absorption mechanism were studied. The results show that the NBR-PUFM composite with a sandwich structure and thickness ratio of 1:8:1 displays good sound absorption, which could be improved further by adding fill
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10

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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11

Sahu, Santosh Kumar, P. S. Rama Sreekanth, and S. V. Kota Reddy. "A Brief Review on Advanced Sandwich Structures with Customized Design Core and Composite Face Sheet." Polymers 14, no. 20 (2022): 4267. http://dx.doi.org/10.3390/polym14204267.

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Sandwich structures are a class of multifunctional high-performance structural composites that have the advantages of being lightweight, of a high strength-to-weight ratio, and of high specific energy absorption capabilities. The creative design of the core along with the apposite material selection for the fabrication of the face sheet and core are the two prerequisites with encouraging areas for further expedition towards the fabrication of advanced composite sandwich structures. The current review work focused on different types of core designs, such as truss, foam, corrugated, honeycomb, d
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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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13

Alsubari, S., M. Y. M. Zuhri, S. M. Sapuan, M. R. Ishak, R. A. Ilyas, and M. R. M. Asyraf. "Potential of Natural Fiber Reinforced Polymer Composites in Sandwich Structures: A Review on Its Mechanical Properties." Polymers 13, no. 3 (2021): 423. http://dx.doi.org/10.3390/polym13030423.

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The interest in using natural fiber reinforced composites is now at its highest. Numerous studies have been conducted due to their positive benefits related to environmental issues. Even though they have limitations for some load requirements, this drawback has been countered through fiber treatment and hybridization. Sandwich structure, on the other hand, is a combination of two or more individual components with different properties, which when joined together can result in better performance. Sandwich structures have been used in a wide range of industrial material applications. They are kn
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14

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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15

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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16

Islam, Md Rakibul, Md Arifuzzaman, Asif Karim Neon, Md Shahe Duzzaman, and Md Rafiul Islam. "Flexural Behavior of Sandwich Composite Made of JFRP Honeycomb as Core and GFRP as Skin." Journal of Engineering Advancements 01, no. 04 (2020): 111–15. http://dx.doi.org/10.38032/jea.2020.04.001.

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The increasing demand of lightweight, strong and sustainable materials in aerospace, automobile and marine sectors is leading towards the development of new materials and structures. The sandwich composite is one of them which is well-known for their high strength to weight ratio and the fiber based sandwich structures with cellular core show comparatively good mechanical, acoustic, thermal and energy absorption properties than metallic cellular structure. The purpose of this work is to fabricate a sandwich structure with jute fiber reinforced polymer composite (JFRP) as core and glass fiber r
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17

Han, Xuecheng, Hongneng Cai, Jie Sun, Zhiyuan Wei, Yaping Huang, and Ang Wang. "Numerical Studies on Failure Mechanisms of All-Composite Sandwich Structure with Honeycomb Core under Compression and Impact Loading Conditions." Polymers 14, no. 19 (2022): 4047. http://dx.doi.org/10.3390/polym14194047.

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The all-composite sandwich structure with the honeycomb core is a lightweight and high-strength structure with broad application scenarios. The face sheet and honeycomb core of the proposed all-composite sandwich structure in this work are composed of carbon-fiber-reinforced polymer (CFRP) composites. The mechanical response and damage mechanism of the all-composite sandwich structure under out-of-plane quasi-static compression and out-of-plane impact are studied by numerical methods. The refined finite element models of the sandwich structures are built on the ABAQUS/Explicit platform. The mi
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18

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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19

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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20

Zhang, Guo Li, Ya Nan Wang, Jia Lu Li, Guang Wei Chen, Li Chen, and Fu You Wang. "The Effect of Reinforcement Structure on the Modal Parameters for Sandwich Structure Composite Plate." Advanced Materials Research 194-196 (February 2011): 2420–24. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.2420.

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In order to investigate the effect of different reinforcement structure on the dynamic characteristics of sandwich structure composite plates used for manufacturing the high speed reciprocating motion composite components, four kinds of paulownia wood sandwich composite test specimens with dimensions of 350×83.5×9.5mm was designed and made by hand lay-up performing and press molding technology. The woven and 2D braiding fabric prepreg were both selected as top face and inner face materials , respectively, and the carbon fiber woven fabric prepreg was chosen as inner part materials. According t
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21

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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22

Qi, Dezhong, Qiang Sun, Sanqiang Zhang, Yuanfang Wang, and Xiaoqiang Zhou. "Buckling Analysis of a Composite Honeycomb Reinforced Sandwich Embedded with Viscoelastic Damping Material." Applied Sciences 12, no. 20 (2022): 10366. http://dx.doi.org/10.3390/app122010366.

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In this study, the buckling loads of a composite sandwich structure, which is reinforced by a honeycomb layer and filled with viscoelastic damping material, are analyzed. By applying von Karman anisotropic plate equations for large deflection, the governing equation of the composite sandwich structure is determined, and the deflection of the structure is further defined by a double triangular series. According to the dynamic equivalent effective stiffness obtained by the homogenous asymptotic method and Hill’s generalized self-consistent model based on the Halpin–Tsai model, limiting the dynam
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23

Prabhakaran, S., V. Krishnaraj, Krishna Shankar, M. Senthilkumar, and R. Zitoune. "Experimental investigation on impact, sound, and vibration response of natural-based composite sandwich made of flax and agglomerated cork." Journal of Composite Materials 54, no. 5 (2019): 669–80. http://dx.doi.org/10.1177/0021998319871354.

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In recent years, material scientists have been focusing on the utilization of materials from natural resources due to environmental concerns. In the same context, the aim of this work is to evaluate impact response, sound absorption behavior, and vibration damping characteristics of natural-based composite sandwich made of flax as skin reinforcement and agglomerated cork as core. Vacuum bagging method was used for manufacturing composite sandwiches with different cork densities of 240, 280, and 340 kg/m3. Composite sandwiches have also been manufactured by using glass as skin reinforcement for
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24

Halim, Zahurin, Zuraida Ahmad, and Syarifah Nur Adilla Syed Taha. "Effect of Fibre Surface Treatment on the Properties of Eco-Core Sandwich Structures." Advanced Materials Research 1115 (July 2015): 321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1115.321.

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The growing ecological, social and economic awareness, high rate of depletion of petroleum resources, concepts of sustainability and new environmental regulations have stimulated the search for green materials compatible with the environment. The focus of this research is to study the effect of fibre surface treatment as far as kenaf fibre composite sandwich structure is concern. The kenaf fibre is subjected to alkali treatment. Upon completion, the treated kenaf fibre is used for fabrication of composite sandwich structure by utilizing thermoset resin which is epoxy as the matrix and galvaniz
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25

Utami, Mala, Jonathan Ernest Sirait, Beny Budhi Septyanto, Aries Sudiarso, and I. Nengah Putra Apriyanto. "Laminar Composite Materials for Unmanned Aircraft Wings." Defense and Security Studies 3 (December 21, 2022): 106–12. http://dx.doi.org/10.37868/dss.v3.id211.

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Unmanned Aerial Vehicles (UAVs) have high popularity, especially in the military field, but are now also being applied to the private and public sectors. One of the UAV components that require high material technology is the wing. The latest material technology developed as a material for unmanned aircraft wings is a composite material that has high strength and lightweight. This research aims to identify composite materials that can be used for unmanned aircraft wing structures. The method used in this research is a qualitative method with a literature study approach. The results of this theo
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26

Banowati, Lies, and I. Putu Udawan Pertama. "Impact Properties of Hemp Natural – Glass Fibers Hybrid Polypropylene Sandwich Composites." Indonesian Journal of Applied Research (IJAR) 4, no. 2 (2023): 159–69. http://dx.doi.org/10.30997/ijar.v4i2.299.

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One way to improve the mechanical properties of composite structures is by hybridizing natural and synthetic fibers. Besides that, combined with sandwich structure composites consists of two relatively strong, thin, and stiff faces separated by a core, for example, balsa, foam, and honeycomb, a relatively thick lightweight. This research develops sandwich composites for structures that have able to withstand high loads and modulus-to-weight ratios but can absorb impacts through impact tests by utilizing the raw material of jute natural fiber, which is abundant in Indonesia so that this researc
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27

Ueda, Tamon, and Toshiyuki Shioya. "Steel-Concrete Sandwich Composite Structure." Concrete Journal 30, no. 5 (1992): 5–20. http://dx.doi.org/10.3151/coj1975.30.5_5.

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28

Bi, Guangjian, Jianping Yin, Zhijun Wang, and Zijian Jia. "Micro Fracture Behavior of Composite Honeycomb Sandwich Structure." Materials 14, no. 1 (2020): 135. http://dx.doi.org/10.3390/ma14010135.

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To study the influence of structure size and composite forms on the mechanical properties of the composite double honeycomb sandwich structure, a composite double honeycomb sandwich structure was initially designed. The dynamic response of a composite double-layer honeycomb sandwich structure under high-speed impact was studied through theoretical analysis and numerical simulation. Ls-dyna software was used to simulate the initially designed composite structure. According to the numerical simulation results and the proposed method for calculating the fracture energy of the composite double hon
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29

Fergusson, Alexander D., Amit Puri, Andrew Morris, and John P. Dear. "Flexural Testing of Composite Sandwich Structures with Digital Speckle Photogrammetry." Applied Mechanics and Materials 5-6 (October 2006): 135–44. http://dx.doi.org/10.4028/www.scientific.net/amm.5-6.135.

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Composite sandwich structures are finding increasingly widespread use in fields ranging from aerospace and wind turbines to sports applications such as skis and surfboards. The high specific stiffness that composite sandwich structures can provide lends them well to these applications. However, the operational environment of these structures is frequently aggressive and often results in damage during service. The extent and effect of damage incurred is an important factor in the design and maintenance of composite sandwich structures. Failure of an individual component can be catastrophic for
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30

Azrin Zakari, Noor Sharina, Julie Juliewatty Mohamed, Nurul Basyirah Aryani Abdul Rahman, Slina Anjang Ab Rahman, and Zairul Amin Rabidin. "Effects of core grain orientation on the mechanical properties of wood sandwich composite." Journal of Tropical Resources and Sustainable Science (JTRSS) 6, no. 1 (2021): 27–30. http://dx.doi.org/10.47253/jtrss.v6i1.723.

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Utilization of sandwich composite during recent year has been driven by the fact that compositematerial has ultimately high strength and stiffness by weight than any other materials. The skins ofsandwich composites technically bear most of the applied loads, however, the core materials alsoplay an important role as it functions in providing continuous support to resist the shear stress.Hence, proper selection of core materials is required to establish a sturdy sandwich compositestructure. This paper presents an experimental investigation on the sandwich structure consists offibreglass/epoxy fa
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Kadum Njim, Emad, Sadiq Emad, and Mohsin Noori Hamzah. "A RECENT REVIEW OF THE SANDWICH-STRUCTURED COMPOSITE METAMATERIALS: STATIC AND DYNAMIC ANALYSIS." Jurnal Teknologi 85, no. 5 (2023): 133–49. http://dx.doi.org/10.11113/jurnalteknologi.v85.20282.

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Metamaterials, commonly known as synthetic composites with exotic dynamic characteristics, have recently generated increasing interest. A short description of composite metamaterial and their types, applications, and manufacturing techniques was reported. Contrary to all previous research, this investigation focuses on the recent studies of static and dynamic analysis of composite metamaterial structure and mechanical performance using experimental and finite element method analyses. Furthermore, the literature has described several methods for constructing composite sandwiches, properties, an
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32

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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Xie, Hai Bo, Zheng Jiang Liu, Yang Song, and Shi Bo Zhou. "Research and Analysis on Damage of Marine Ship Structures by Composite Materials Based on FEM Numerical Simulation." Key Engineering Materials 852 (July 2020): 129–38. http://dx.doi.org/10.4028/www.scientific.net/kem.852.129.

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In view of the particularity of marine foam sandwich composite structure, this paper establishes an equivalent parameter conversion system based on the classical sandwich structure design idea, and forms an equivalent simulation method to determine the initial stiffness, initial failure load and ultimate failure load of the structure. The simulation discriminant method makes the SHELL91 shell unit available for the marine foam sandwich composite structure. The bending test of the basic structure of marine foam sandwich composite beams and plates is described in detail. The equivalent simulatio
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Gao, Wei, Zhiqiang Yu, Aijie Ma, and Zhangxin Guo. "Numerical simulation of composite grid sandwich structure under low-velocity impact." Science and Engineering of Composite Materials 29, no. 1 (2022): 516–28. http://dx.doi.org/10.1515/secm-2022-0176.

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Abstract The low-velocity impact finite element model of the carbon fiber-reinforced composite grid sandwich structure was established by ABAQUS. Its panels and grid are both carbon fiber-reinforced composite laminates. The constitutive relation of composite laminates is written into the VUMAT user subroutine using the Fortran language. Simulation of intralaminar failure behavior of composite laminates using the three-dimensional Hashin failure criterion. The quadratic stress criterion and the B-K energy criterion were used to simulate the interlaminar failure behavior, and the delamination da
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Yang, Xiao Jun, Qing Shan Lan, and Yu Ning Zhong. "Buckling Analysis and Experiment of Fiber-Paper Honeycomb Sandwich Structure Composites." Advanced Materials Research 314-316 (August 2011): 566–70. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.566.

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The aim of this paper is to present a finite element method to predict buckling characteristics of paper honeycomb sandwich panels with composite skins under dynamic axial compression via ANSYS/LS-DYNA. First of all, some problems of the conventional method using honeycomb plate theory, sandwich laminboard theory and equivalent panel theory were pointed out. In order to develop an effective predicting method, by assuming appropriate periodic boundary condition on the edges, a simplified finite element model on hexagonal structure of a unit cell for sandwich panels was developed utilizing the 3
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36

Hassan, Mohamad Zaki, S. M. Sapuan, Zainudin A. Rasid, Ariff Farhan Mohd Nor, Rozzeta Dolah, and Mohd Yusof Md Daud. "Impact Damage Resistance and Post-Impact Tolerance of Optimum Banana-Pseudo-Stem-Fiber-Reinforced Epoxy Sandwich Structures." Applied Sciences 10, no. 2 (2020): 684. http://dx.doi.org/10.3390/app10020684.

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Banana fiber has a high potential for use in fiber composite structures due to its promise as a polymer reinforcement. However, it has poor bonding characteristics with the matrixes due to hydrophobic–hydrophilic incompatibility, inconsistency in blending weight ratio, and fiber length instability. In this study, the optimal conditions for a banana/epoxy composite as determined previously were used to fabricate a sandwich structure where carbon/Kevlar twill plies acted as the skins. The structure was evaluated based on two experimental tests: low-velocity impact and compression after impact (C
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Zhu, Xiaoli. "The mechanical performance of glass fibre reinforced composite based sandwich structure." Functional materials 25, no. 4 (2018): 702–7. http://dx.doi.org/10.15407/fm25.04.702.

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Wang, Yongwei, Deng Zhou, Gang Yan, and Zhuangjie Wang. "Experimental and Numerical Study on Residual Strength of Honeycomb Sandwich Composite Structure after Lightning Strike." Aerospace 9, no. 3 (2022): 158. http://dx.doi.org/10.3390/aerospace9030158.

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Honeycomb sandwich composite structures are widely used in various aircraft structures due to their unique performance. However, honeycomb sandwich composite structures are prone to lightning damage that threatens the structure safety. Therefore, it is necessary to assess the residual mechanical properties of honeycomb sandwich composite structures after a lightning strike. In this study, simulated lightning strike tests were first conducted for honeycomb sandwich panels with and without carbon nanotube film (CNTF) to obtain different damage scenarios and study the protection effect of CNTF. T
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Srilakshmi, R., and R. Sanjay kumar. "Numerical analysis of sandwich panels under high-velocity impact." IOP Conference Series: Materials Science and Engineering 1248, no. 1 (2022): 012104. http://dx.doi.org/10.1088/1757-899x/1248/1/012104.

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Abstract Composites are gaining importance in aircraft structures, due to their high specific strength, stiffness, and low weight. There are different types of composites used in aircraft structures out of which carbon fiber reinforced polymer (CFRP) serves best in the aircraft industry. Half of the weight of the Boeing 787 is made of CFRP and other composites that reduced the weight of the aircraft by 20% as compared to the conventional design with aluminum alloy. Similar to CFRP the recent trend focused on the usage of sandwich structures in aircraft design. Sandwich structure is a composite
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Li, Chang Liang, Da Zhi Jiang, and Jing Cheng Zeng. "The Use of Fabric Composite Frequency Selective Surface in Sandwich Structures for Low-Observable Radomes." Applied Mechanics and Materials 281 (January 2013): 448–52. http://dx.doi.org/10.4028/www.scientific.net/amm.281.448.

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In this work, the hybrid fabrics of carbon and quartz fibers as filters were adopted in PMI core sandwich structures for low-observable radomes. The advantages of fabric composite frequency selective surfaces (FCFSSs) are easily fabricated by braiding and shaped into curved surfaces. This paper mainly studied the electromagnetic (EM) transmission characteristics of the low-observable radome wall with composite FSS by 3-dimensional electromagnetic analysis software. First of all, the accuracy of the simulation model composed of up and down composite face sheets, a layer of composite FSS and PMI
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Al-Fatlawi, Alaa, Károly Jármai, and György Kovács. "Theoretical and Numerical Analysis of an Aluminum Foam Sandwich Structure." Pollack Periodica 15, no. 3 (2020): 113–24. http://dx.doi.org/10.1556/606.2020.15.3.11.

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The aim of the research was to develop a new lightweight sandwich structure, which can be used for elements of air containers. The structure consists of aluminum foam core with fiber reinforced composite face-sheets. Nine different laminated glass or/and carbon fiber reinforced plastic face-sheet combinations were investigated. Finite element analysis of the sandwich structures was introduced. Single-objective optimization of the new sandwich structure was achieved for minimal weight. Five design constraints were considered: stiffness of the structure, face-sheet failure, core shear, face-shee
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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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Zhang, Lu, Shaowei Lu, Xiaoqiang Wang, Keming Ma, Hoyin Liu, and Limin Zhou. "Manufacture and mechanical properties of sandwich structure-battery composites." Journal of Polymer Engineering 39, no. 9 (2019): 838–43. http://dx.doi.org/10.1515/polyeng-2019-0143.

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Abstract An innovative sandwich battery composite was designed and manufactured by applying he vacuum assisted hand lay-up molding process. A series of bending mechanical properties and electrical performance testing were performed to investigate the reliability of the structure-battery composites. Experimental results showed that embedding the lithium polymer cell had no influence on the specific strength of the composite components and the electrical properties of the battery packs. Moreover, the charging and discharging properties of the structure-battery composites were not affected when s
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Jiang, Da Zhi, Fu Biao Yang, Su Li Xing, and Jia Yu Xiao. "Dynamic Response of Two-Core Sandwich Composite Structures under Impact." Solid State Phenomena 136 (February 2008): 115–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.136.115.

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Traditional sandwich structure consists of two face sheets and a core. With an internal sheet inserted into the core, a two-core sandwich structure is then formed. Two-core sandwich structures with composite laminated face sheets and a thin internal sheet subjected to low velocity impact are studied in this paper. Local displacement of the core under the point of impact is investigated. Simulated results show that the local displacement of the core along the direction of the impact has been decreased significantly by introducing the internal sheet into a traditional single sandwich structure a
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Patel, Shivdayal, and Murlidhar Patel. "The efficient design of hybrid and metallic sandwich structures under air blast loading." Journal of Sandwich Structures & Materials 24, no. 3 (2022): 1706–25. http://dx.doi.org/10.1177/10996362211065748.

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A novel hybrid composite honeycomb sandwich structure (HCHSS) and metallic honeycomb sandwich structure (MHSS) were developed to obtain realistic and blast resistance parameters for the consideration of blast loading. Hybrid composite square honeycomb sandwich structure (HCSHSS) and metallic honeycomb sandwich structure with different cores such as square, hexagonal, octagonal, and circular were modelled to obtain the target protection level (lowest deflection) for the vehicle armour structure. The Johnson-Cook and Donadon failure criteria were incorporated into finite element analysis (FEA) f
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Arsalan, Hussain Khan, and Misbah Danish Mr. "FINITE ELEMENT ANALYSIS OF LAMINATED SANDWICH STRUCTURE." International Journal of Advances in Engineering & Scientific Research 5, no. 3 (2018): 14–33. https://doi.org/10.5281/zenodo.10780792.

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<strong>ABSTRACT</strong> <em>In modern civil engineering structures, laminated composites are widely used in various applications including roof of buildings, bridge decks, structural panels and beams. Using the laminated composite material in construction introduces many advantages such as high strength/stiffness to weight ratio, survivability in extreme weather conditions, durability, fatigue resistance, and design flexibility, easy to install in structure replacement. The behavior of laminated composites under free vibration, bending and buckling mode is very complex phenomenon because man
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TranVan, Luan, Vincent Legrand, Pascal Casari, et al. "Hygro-Thermo-Mechanical Responses of Balsa Wood Core Sandwich Composite Beam Exposed to Fire." Processes 8, no. 1 (2020): 103. http://dx.doi.org/10.3390/pr8010103.

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In this study, the hygro–thermo–mechanical responses of balsa core sandwich structured composite was investigated by using experimental, analytical and numerical results. These investigations were performed on two types of specimen conditions: dry and moisture saturation sandwich composite specimens that are composed of E-glass/polyester skins bonded to a balsa core. The wet specimens were immersed in distilled water at 40 °C until saturated with water. The both dry and wet sandwich composite specimens were heated by fire. The mass loss kinetic and the mechanical properties were investigated b
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Hao, Peng, Lin’an Li, and Jianxun Du. "Research on the Response Characteristics of Bio-Inspired Composite Sandwich Structure under Low Velocity Impact." Journal of Physics: Conference Series 2101, no. 1 (2021): 012087. http://dx.doi.org/10.1088/1742-6596/2101/1/012087.

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Abstract In order to research the impact mechanical response characteristics of the bio-inspired composite sandwich structure, the hemispherical impactor is preloaded with different energy to impact bio-inspired and conventional composite sandwich structure, the stress distribution and dynamic response characteristics of composite sandwich structure under impact load are studied. The results show that the main damage of the upper panel is fiber shear fracture, while crushing fracture for the core, and the main damage of the lower panel is fiber tensile tearing under different impact load. The
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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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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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