The automotive stabilizer bars prepared by the third-generation method of composite fabrications

Kim, Sung Jun

doi:10.1088/2631-6331/ab2605

Cited by 7 publications

(1 citation statement)

References 19 publications

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“…The use of composite materials, however, is also governed by their ability to meet the increasing demands for crashworthiness, with the ultimate goal being the reduction of occupant harm and/or vehicle damage [5,6]. During the frontal collision, a bumper beam is the first exposed part in the passenger car onto the barrier or the other car; therefore, it is crucial to design the bumper beam in order to maximise its load-resisting capability [6][7][8]. In the meantime, it has been found that composite products, which are designed based on conventional methods with a simple combination of several stacking sequences, are no longer competitive.…”

Section: Introductionmentioning

confidence: 99%

The Design of a Piecewise-Integrated Composite Bumper Beam with Machine-Learning Algorithms

Ham,

Ji,

Cheon

2024

Materials

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In the present study, a piecewise-integrated composite bumper beam for passenger cars is proposed, and the design innovation process for a composite bumper beam regarding a bumper test protocol suggested by the Insurance Institute for Highway Safety is carried out with the help of machine learning models. Several elements in the bumper FE model have been assigned to be references in order to collect training data, which allow the machine learning model to study the method of predicting loading types for each finite element. Two-dimensional and three-dimensional implementations are provided by machine learning models, which determine the stacking sequences of each finite element in the piecewise-integrated composite bumper beam. It was found that the piecewise-integrated composite bumper beam, which is designed by a machine learning model, is more effective for reducing the possibility of structural failure as well as increasing bending strength compared to the conventional composite bumper beam. Moreover, the three-dimensional implementation produces better results compared with results from the two-dimensional implementation since it is preferable to choose loading-type information, which is achieved from surroundings when the target elements are located either at corners or junctions of planes, instead of using information that comes from the identical plane of target elements.

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Section: Introductionmentioning

confidence: 99%

The Design of a Piecewise-Integrated Composite Bumper Beam with Machine-Learning Algorithms

Ham,

Ji,

Cheon

2024

Materials

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Circular braided glass fiber/epoxy composites with helical architecture (coil spring) fabricated by plaster‐sacrificial compression molding for structural automotive applications

Kim

Shin²,

Kim³

et al. 2020

J of Applied Polymer Sci

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Various approaches to reduce the weight of electronics and automobile devices have been explored. For instance, an alternative polymer was utilized to replace metals. In the present study, a new circular braided glass fiber/epoxy composite (braid angle: 45°, fiber: 48 vol%) with a helical structure was fabricated as a model coil spring for weight reduction. A plaster‐sacrificial compression mold was especially designed to fabricate helical composites without voids. The spring design was validated by the experimental results of torsional tests. Plastic deformations of the epoxy resin were measured using creep tests to eliminate high‐temperature plastic deformation (HTPD) of the composites. Pre‐strain applied thermal aging was utilized to remove HTPD. Mechanical properties of the composites were also investigated. The mechanism of mechanical failure was found to be the interfacial failure. For preparation of uncured prepreg, resin permeability was measured to a range of 10−10 m2. Resin transfer in the glass fiber‐braided textiles occurred due to the combination of viscous and diffusional flow mechanisms. Based on the results in this study, the facilely designed coil spring composite can be used for various applications, especially automotive parts.

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Observation of notch effect in Al6061-T6 specimens under tensile loading using digital image correlation and finite element method

2020

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The automotive stabilizer bars prepared by the third-generation method of composite fabrications

Cited by 7 publications

References 19 publications

The Design of a Piecewise-Integrated Composite Bumper Beam with Machine-Learning Algorithms

The Design of a Piecewise-Integrated Composite Bumper Beam with Machine-Learning Algorithms

Circular braided glass fiber/epoxy composites with helical architecture (coil spring) fabricated by plaster‐sacrificial compression molding for structural automotive applications

Observation of notch effect in Al6061-T6 specimens under tensile loading using digital image correlation and finite element method

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