Interfacial enhancements between a three-dimensionally printed Honeycomb-Truss core and woven carbon fiber/polyamide-6 facesheets in sandwich-structured composites

Kim, Byeong‐Joo; Kim, Jinsik; Cha, Sang-Hyup; Shim, Yoon‐Bo; Jeong, Changyoon; Kim, Namhun; Park, Hyung Wook

doi:10.1016/j.compositesa.2021.106534

Cited by 9 publications

(2 citation statements)

References 38 publications

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“…Carbon fibre-reinforced polymers (CFRPs) are an attractive alternative for the aeronautical industry, as lightweight composite materials can replace conventional metallic components [1,2]. With the industrial growth of unmanned aerial vehicles (UAVs) and the emergence of urban air mobility, the application of CFRP structures has substantially increased, especially when complex geometries and shapes [3][4][5] are required and weight minimisation is vital. The progress in additive manufacturing (AM) is an interesting option regarding weight reduction in CFRPs, e.g., providing complex 3D geometries without sacrificing structural performance [1,6,7].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Bending Properties for 3D-Printed Carbon Fibre/Epoxy Composites with Several Processing Parameters Using ANN and Statistical Methods

Monticeli

Neves

Ornaghi³

et al. 2022

Polymers

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The effects of processing parameters on conventional molding techniques are well-known. However, the fabrication of a carbon fibre (CF)/epoxy composite via additive manufacturing (AM) is in the early development stages relative to fabrications based on resin infusion. Accordingly, we introduce predictions of the flexural strength, modulus, and strain for high-performance 3D printable CF/epoxy composites. The data prediction is analyzed using approaches based on an artificial neural network, analysis of variance, and a response surface methodology. The predicted results present high reliability and low error level, getting closer to experimental results. Different input data can be included in the system with the trained neural network, allowing for the prediction of different output parameters. The following factors that influence the AM composite processing were considered: vacuum pressure, printing speed, curing temperature, printing space, and thickness. We further demonstrate fast and streamlined fabrications of various composite materials with tailor-made properties, as the influence of each processing parameter on the desirable properties.

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Section: Introductionmentioning

confidence: 99%

Prediction of Bending Properties for 3D-Printed Carbon Fibre/Epoxy Composites with Several Processing Parameters Using ANN and Statistical Methods

Monticeli

Neves

Ornaghi³

et al. 2022

Polymers

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“…7,8 Due to simultaneous curing and foaming reaction, epoxy foam with the same system will improve the poor interface mechanical properties of sandwich composites compared to other foam materials. 9,10 Therefore, the preparation and properties of thermal expansion epoxy foam provides essential support for preparing sandwich composites via the TEMP technology.…”

mentioning

confidence: 99%

Preparation and properties of expandable epoxy foam prepreg for sandwich composites prepared via thermal expansion molding process

Wei

Zhao

et al. 2022

J of Applied Polymer Sci

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Thermal expansion molding process (TEMP) is a new technology for integrated molding sandwich composites. However, the development of high-performance expandable foam prepreg limits the scale applications of this technology. In this study, epoxy foam prepreg (M-1) with expandable function was used to prepare foams with different expansion ratios via restricted foaming. Three suitable expansion ratios were determined to prepare foam sandwich composites by analyzing the density, bubble sizes, compressive strength, and expansion pressures of expandable foam. The maximum expansion pressure produced by four, six, and eight times of foam expansion were 251, 160, and 115 kPa, respectively. Tensile test and digital imaging computer technology confirmed that with the increase of foam expansion ratio, the strength decreased, but the plastic deformation ability increased. Failure modes such as foam matrix fracture, glass fiber mat fracture, and mutual-slipping between the foam matrix and glass fiber mat occur during the stretching process. Finally, the PMI/M-1 foam hybrid sandwich composites with three structures were prepared via the TEMP technology, which verified the feasibility of this technology in forming sandwich composites.expandable foam, expansion pressure, sandwich composites, TEMP technology, tensile properties | INTRODUCTIONFoam sandwich composites are widely applied in automobiles, aerospace, sports, and other fields owing to their light weight and high strength. 1,2 However, high costs and low production tempo of the traditional composite molding

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Impact performance comparison of carbon fiber reinforced polyamide 6 and fast‐curing epoxy composites manufactured by resin transfer molding

Baskaran,

de la Calle,

Harismendy

et al. 2024

Polymer Composites

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In the present paper, we manufactured carbon fiber‐reinforced polyamide‐6 composite (CF‐PA6) by resin transfer molding and compared their impact performance with an equivalent automotive grade epoxy‐matrix composite (CF‐Epoxy). Such comparison is pertinent as the new thermoplastic composite will compete with the traditional thermosetting composite, so impact characterization carried out at the same conditions is necessary for evaluating the possibilities of the new material. The energy dissipation capacity of the CF‐PA6 was 27% higher, the maximum impact‐peak load was 5% smaller, and the damage threshold was similar for both composites. Regarding residual post‐impact properties of samples damaged by a 25 J impact energy, CF‐PA6 retained 62% of its stiffness, 84% of its strength and 67% of its energy dissipation capacity. In contrast, CF‐Epoxy retained 46%, 44% and 40% respectively.Highlights Comparison of impact behavior between CF‐PA6 (RTM) and CF‐Epoxy (RTM). The damage thresholds of both composites were similar (~2.5 J). The penetration and perforation thresholds of CF‐PA6 were 48% and 27% higher. Post‐impact residual property: CF‐PA6 retained 60% of its stiffness.

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Interfacial enhancements between a three-dimensionally printed Honeycomb-Truss core and woven carbon fiber/polyamide-6 facesheets in sandwich-structured composites

Cited by 9 publications

References 38 publications

Prediction of Bending Properties for 3D-Printed Carbon Fibre/Epoxy Composites with Several Processing Parameters Using ANN and Statistical Methods

Prediction of Bending Properties for 3D-Printed Carbon Fibre/Epoxy Composites with Several Processing Parameters Using ANN and Statistical Methods

Preparation and properties of expandable epoxy foam prepreg for sandwich composites prepared via thermal expansion molding process

Impact performance comparison of carbon fiber reinforced polyamide 6 and fast‐curing epoxy composites manufactured by resin transfer molding

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