Design and numerical evaluation of recycled-carbon-fiber-reinforced polymer/metal hybrid engine cradle concepts

Fonseca, João Henrique; Han, Giyeol; Quagliato, Luca; Kim, Yong Hee; Choi, Joeun; Keum, Taeyeon; Kim, Sungeun; Han, Do Suck; Kim, Naksoo; Lee, Hyungyil

doi:10.1016/j.ijmecsci.2019.105115

Cited by 22 publications

(7 citation statements)

References 26 publications

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“…In terms of structural performance, the hollow-type structure had good results, with a 19.0% weight drop in comparison to the reference model. 19 With 16% reduction in weight and less production cost, this C-type model is better than the reference model.…”

Section: Designing Lightweight Parts With Cfrpmentioning

confidence: 91%

Performance analysis of electric motors, comparing lightweight techniques and cooling methods: A review

Shrivatsaan M,

GB,

Palka

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The paper gives a comprehensive review of lightweight materials/design of permanent-magnet-synchronous-motors and different temperature-reducing (cooling) techniques. The paper discusses and compares various simulations and performance analyses of different practically implemented solutions. Temperature and performance analyses for cooling systems using phase-changing materials, cooling jackets, and other coolants are investigated, and the use of lightweight materials and composites is compared. A discussion on numerical methods and results (finite element method analysis), in order to get a more-precise thermal mapping model for different machine structures is presented. Finally, the best temperature-reducing-cooling systems methods along with the good lightweight designs which increase the overall efficiency of the motor are discussed and commented on.

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Section: Designing Lightweight Parts With Cfrpmentioning

confidence: 91%

Performance analysis of electric motors, comparing lightweight techniques and cooling methods: A review

Shrivatsaan M,

GB,

Palka

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The component geometry varies from case to case and is not easy to generalize. For this reason, recent contributions dealing with the optimization of injection-molded components focused on controlling the global thickness distribution and inserting local rib networks to limit the warpage [13,14]. On the other hand, injection gate (IG) design has also attracted the interest of researchers over the years, and various modeling technics have been applied to achieve greater optimization considering different criteria, as hereafter summarized.…”

Section: Introductionmentioning

confidence: 99%

Gate design algorithm to maximize the fiber orientation effectiveness in thermoplastic injection-molded components

Perin

2023

Materials Research Proceedings

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Abstract. This research presents an automatic algorithm, implemented in a Visual Basic Architecture (VBA), for the optimization of the gate location in thermoplastic injection molding of short fibers reinforced composite materials. The algorithm receives, as input, the geometry of the component and, according to the user’s choice, defines the injection points grid, and relevant versors, on a pre-constructed mesh, automatically runs the finite volume method (FVM) simulation and exports the fiber orientation tensor (FOT) on each node of the mesh. The nodal coordinate of the part and the relevant FOT are then used as the training dataset for a Gradient Boosting (GB) algorithm for the full correlation between injection gate locations and the resulting fiber orientation distribution (FOD), allowing to define the injection gate configuration better suited to maximize the effectiveness of the reinforcement fibers. By coupling the trained GB algorithm with a finite element method (FEM) simulation it was confirmed that the developed algorithm can predict the influence of the gate location on the FOD and the resulting mechanical performances, improving the stiffness between 3.8% and 32.6%, on simple and complex geometries alike.

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“…Indeed, recycling is a difficult process for composites prepared with thermoset polymer matrices, and the resulting recovered fibers commonly have short lengths and hence low aspect ratios. Nevertheless, many sectors have plans for the use of recycled carbon fibers (rCF) as in urban air mobility, utility poles to trench covers, engine cradles [ 13 ], fuel cells [ 14 ], wind turbine blades [ 15 ], and cementitious mortar to increase mechanical properties [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Characteristics of Carbon Fibers Modified with Imidazolium Ionic Liquids

2022

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A multifunctional designing approach is of great importance for advanced composite applications. This study assessed the use of ionic liquids (ILs) to modify the surface of carbon fiber (CF) and impart multifunctional characteristics to it. For that, ethanolic solutions of different ILs, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl-3-methylimidazolium chloride and 1-(2-hydroxyethyl)-3-methylimidazolium chloride, at different concentrations, were used to treat the CF. Fourier-transform infrared spectroscopy confirmed the presence of IL on the CF surface. The contact angle for 1% w/v IL-treated CF and DGEBA epoxy decreased by up to 35%, corresponding to an increase in surface energy of fiber, accompanied by an increase of 91% in interfacial shear strength. These enhancements were achieved with the hydroxy-functionalized IL, showing the tunability of CF properties through the N-imidazolium substituent. An increase in crystallite size along the basal plane was also found due to the ordering of the graphitic structure on the surface. Moreover, there was a decrease in electrical resistivity of 77%. In all, the imidazolium ILs were considered a promising approach to induce multifunctional characteristics, namely enhanced interfacial strength and electrical conductivity, to unsized CF, which can also be beneficial for recycled fibers without deteriorating their inherent surface properties.

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Design and numerical evaluation of recycled-carbon-fiber-reinforced polymer/metal hybrid engine cradle concepts

Cited by 22 publications

References 26 publications

Performance analysis of electric motors, comparing lightweight techniques and cooling methods: A review

Performance analysis of electric motors, comparing lightweight techniques and cooling methods: A review

Gate design algorithm to maximize the fiber orientation effectiveness in thermoplastic injection-molded components

Multifunctional Characteristics of Carbon Fibers Modified with Imidazolium Ionic Liquids

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