Design of Prepreg Compression Molding for Manufacturing of CFRTP B-pillar Reinforcement with Equivalent Mechanical Properties to Existing Steel Part

Lee, Jungmin; Lee, Chan-Joo; Kim, Byung-Min; Ko, Dae-Cheol

doi:10.1007/s12541-019-00265-z

Cited by 16 publications

(8 citation statements)

References 31 publications

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“…Although many CFRTP parts can be manufactured into near-net-shape [8,9], riveting through assembly holes is still indispensable for rapid assembly of load bearing parts [10] and precise positioning of aircraft components [11]. To date, literature on hole making of the well-established conventional thermoset CF/epoxy composites is widely available [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Temperature field evolution and thermal-mechanical interaction induced damage in drilling of thermoplastic CF/PEKK – A comparative study with thermoset CF/epoxy

Luo

Zhang

et al. 2022

Preprint

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Although new generation carbon fibre reinforced thermoplastic (CFRTP) such as carbon fibre reinforced polyetherketoneketone (CF/PEKK) is a promising sustainable alternative to the conventional thermoset CFRP, there is a lack of literature regarding its machining performance. This is the first study unveiling the hole wall and chip temperature evolution during drilling of thermoplastic CF/PEKK composite and the resulting material damages have been studied in detail. Through comparative study with CF/epoxy, the disparate drilling performance of the two composites has been uncovered, and the results were found to be closely related to the materials’ thermal/mechanical properties. Specifically, CF/PEKK produces continuous chips due to its excellent ductility and thermal sensitivity, whereas CF/epoxy produces segmented chips due to its brittle nature. CF/PEKK generates up to 40 N (50.5%) higher thrust force, 87.6 ℃ (98.9%) higher hole wall temperature and 61.1 ℃ (48.8 %) higher chip temperature than that of CF/epoxy. This has been correlated to the longer tool-chip contact length of CF/PEKK and its unique chip morphology. Despite the greater thrust force/temperature generation, CF/PEKK shows 55.7% lower delamination damage than CF/epoxy, and this is owning to its excellent interlaminar toughness. This study establishes a more in-depth understanding into the drilling performance of thermoplastic CF/PEKK and thermoset CF/epoxy and also provides guidance on the high performance manufacturing of next generation CFRPs.

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Section: Introductionmentioning

confidence: 99%

Temperature field evolution and thermal-mechanical interaction induced damage in drilling of thermoplastic CF/PEKK – A comparative study with thermoset CF/epoxy

Luo

Zhang

et al. 2022

Preprint

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show abstract

“…The process consists of the transformation of a mat preform i.e. a mixture of fiber and resin into the desired product by employing corresponding metal molds [173][174][175]. Figure 19 represents the representative diagram of the key components of a typical compression press [174].…”

Section: Compression Moldingmentioning

confidence: 99%

Composites for electric vehicles and automotive sector: A review

Wazeer¹,

Das²,

Abeykoon³

et al. 2023

Green Energy and Intelligent Transportation

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“…Figure 4 shows the formability evaluation of the B-pillar by comparison with the FLDs under different temperatures [ 20 ]. The temperature of the boron steel decreased during the forming stage owing to the contact between the tool and blank, which could lead to problems, such as cracking and wrinkling.…”

Section: Process Design Of the B-pillar Assembly By Fe Simulationmentioning

confidence: 99%

Novel Approach toward the Forming Process of CFRP Reinforcement with a Hot Stamped Part by Prepreg Compression Molding

et al. 2022

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The use of carbon fiber-reinforced plastics (CFRP) is markedly increasing, particularly for the manufacturing of automotive parts, to achieve better mechanical properties and a light weight. However, it is difficult to manufacture multi-material products because of the problems due to the adhesive between CFRP and steel. The prepreg compression molding (PCM) of laminated CFRP can reduce the production time and increase the flexibility of the manufacturing process. In this study, a new manufacturing process is proposed for CFRP reinforcement on a hot stamped B-pillar using PCM. A finite element (FE) simulation of the hot stamping process is conducted to predict the dimensions of the B-pillar. The feasibility of PCM manufacturing is explored by the simulation of the thermoforming of a CFRP set on a shaped B-pillar. The temperature conditions of the CFRP and B-pillar for the PCM are determined by considering the heat transfer between the CFRP and steel. Finally, the PCM of the B-pillar consisting of steel and CFRP was performed to compare with the analytical results for verification. The evaluation of the B-pillar was conducted by the observation of the cross-section for the B-pillar and interlayer by scanning electron microscopy (SEM). As a result, a steel/CFRP B-pillar assembly could be efficiently manufactured using the PCM process without an additional adhesive process.

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Design of Prepreg Compression Molding for Manufacturing of CFRTP B-pillar Reinforcement with Equivalent Mechanical Properties to Existing Steel Part

Cited by 16 publications

References 31 publications

Temperature field evolution and thermal-mechanical interaction induced damage in drilling of thermoplastic CF/PEKK – A comparative study with thermoset CF/epoxy

Temperature field evolution and thermal-mechanical interaction induced damage in drilling of thermoplastic CF/PEKK – A comparative study with thermoset CF/epoxy

Composites for electric vehicles and automotive sector: A review

Novel Approach toward the Forming Process of CFRP Reinforcement with a Hot Stamped Part by Prepreg Compression Molding

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