Cellular and Sandwich Materials

Lampeas, George

doi:10.1007/978-3-030-35346-9_6

Cited by 3 publications

(3 citation statements)

References 48 publications

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“…It is believed that the use of fabric in both the lower and upper layers creates a layer resistant to the falling object, while the fibrous layer acts as an impact-absorbing layer. In sandwich-type composite structures, the core layer provides time and space for high energy absorption when it exposed to an impact loading [29]. In addition, sandwich structures with stiff surface layers and less rigid core structure exhibit improved properties under mechanical loads [30].…”

Section: Drop-weight Resistancementioning

confidence: 99%

Design of an Impact Absorbing Composite Panel from Denim Wastes and Acrylated Epoxidized Soybean Oil based Epoxy Resins

Oztemur

Sezgin

Yalcin-Enis

2021

Tekstil Ve Konfeksiyon

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The focus of this work is to make a significant contribution to solid waste management by designing impact-absorbing bio-composite panels using bio-resin and denim wastes. In this context, composite panels are produced by vacuum infusion technique using both epoxy and acrylated epoxidized soybean oil (AESO) based hybrid resins while denim wastes are utilized as reinforcement materials in fiber and fabric forms. Both physical (fiber density and fiber weight ratio) and mechanical analyses (drop-weight impact resistance and dynamic mechanical analysis (DMA)) of the composites are performed. The outcomes of the study prove that the increase in the AESO ratio of the resin system improves the ductility of the composite and consequently the impact resistance. On the other hand, dynamic mechanical analysis results indicate that the AESO plug-in reduces the storage module and increases the damping factor.

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Section: Drop-weight Resistancementioning

confidence: 99%

Design of an Impact Absorbing Composite Panel from Denim Wastes and Acrylated Epoxidized Soybean Oil based Epoxy Resins

Oztemur

Sezgin

Yalcin-Enis

2021

Tekstil Ve Konfeksiyon

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“…Metallic materials are usually used for the fabrication of strut-based lattice materials due to the provided design flexibility that allows them to tailor their density and properties [8]. For these reasons, these structures provide increasing opportunities for applications in advanced structural components and parts, where a high strength-to-weight ratio is desirable [9].…”

Section: Introductionmentioning

confidence: 99%

“…Additive manufacturing (AM) processes have been proven to be the most advantageous method for the production of lattice materials contrary to conventional manufacturing processes, such as investment casting or textile weaving [9]. In AM methods, parts are fabricated in a layer-by-layer manner based on the input digital model, thus, providing more design freedom to engineers and manufacturers contrary to subtractive and forming manufacturing techniques [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Efficient Simulation of the Laser-Based Powder Bed Fusion Process Demonstrated on Open Lattice Materials Fabrication

Psihoyos,

Lampeas

2024

Machines

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Strut-based or open lattice materials are a category of advanced materials used in medical and aerospace applications due to their properties, such as high strength-to-weight ratio and energy absorption capability. The most prominent method for the fabrication of lattice materials is the Laser-based Powder Bed Fusion (L-PBF) additive manufacturing (AM) process, due to its ability to produce parts of complex geometries. The current work presents an efficient meso-scale finite element (FE) modeling methodology of the L-PBF process demonstrated in the fabrication of body-centered cubic (BCC) lattice materials. The modeling efficiency is gained through an adaptive mesh refinement technique, which results in accurate and efficient prediction of the temperature field during the process evolution. To examine the efficiency of the modeling method, the computational time is compared with that of a conventional FE simulation, based on the element and birth technique. The temperature history difference between the two approaches is minor but the adaptive mesh modeling requires only a small portion of the simulation time of the conventional model. In addition, the computational results present a good correlation with the available experimental measurements for various process parameters validating the presented efficient method.

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The Effect of Various Textile Wastes on the Mechanical Properties of Composite Materials

Sezgin

2023

Tekstil Ve Konfeksiyon

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As technology advances and people's needs rise, the amount of waste produced rises in tandem with increased productivity in every industry. In this study, mechanical properties of hybrid composite structures made from recycled textile waste (denim waste, human hair, and pantyhose waste) are compared to those of an E-glass plain-woven fabric reinforced composite structure (Charpy impact strength, drop-weight impact strength, tensile strength, and flexural strength). The vacuum-assisted resin transfer method is employed as the production method, with epoxy resin as the chosen matrix material. Except for tensile strength, the obtained results suggest that the mechanical properties of textile waste and E-glass fabric reinforced hybrid composite constructions can compete with those of pure E-glass fabric reinforced sample.

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Cellular and Sandwich Materials

Cited by 3 publications

References 48 publications

Design of an Impact Absorbing Composite Panel from Denim Wastes and Acrylated Epoxidized Soybean Oil based Epoxy Resins

Design of an Impact Absorbing Composite Panel from Denim Wastes and Acrylated Epoxidized Soybean Oil based Epoxy Resins

Efficient Simulation of the Laser-Based Powder Bed Fusion Process Demonstrated on Open Lattice Materials Fabrication

The Effect of Various Textile Wastes on the Mechanical Properties of Composite Materials

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