Fabrication of continuous carbon fiber reinforced polyamide 6 composites by means of self‐resistance electric heating

2021 ◽  
Author(s):  
Xiaoyu Wang ◽  
Yunhuan Liu ◽  
Qingzhu He ◽  
Can Weng ◽  
Zhanyu Zhai
Keyword(s):  
Carbon Fiber ◽  
Electric Heating ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

2019 ◽  
Vol 38 (12) ◽  
pp. 578-587 ◽  
Author(s):  
Yongpeng Lei ◽  
Jifeng Zhang ◽  
Tao Zhang ◽  
Hongfu Li
Keyword(s):  
Carbon Fiber ◽  
Theoretical Models ◽  
Polyamide 6 ◽  
Water Diffusion ◽  
Fiber Reinforced ◽  
The Matrix ◽  
Composite Models ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced ◽  
Environmental Causes

Diffusion of moisture through composites is one of the main environmental causes of their deterioration and loss of service life. This paper deals with water diffusion in the unidirectional continuous carbon fiber reinforced polyamide 6 composites by experimental measurement, theoretical analysis, and numerical simulation. Immersion experiment is respectively conducted in distilled water at 25°C, 70°C, and 95°C for the pure polyamide 6 resin and the carbon fiber/polyamide 6 composite. Then, the theoretical Fickian and Langmuir models are employed to fit the gravimetric data of the specimens. Subsequently, water diffusion in the composite is also simulated using finite element method. Moreover, to capture the real distribution of fibers in the matrix, the random algorithm is developed to generate the computational composite models with randomly dispersed fibers. Finally, the comparison between the experimental, theoretical, and numerical results is made to assess the applicability of theoretical models and the influences of fiber distribution and interphase on the effective water diffusion coefficient of composite.

scholarly journals Effect of layer thickness of prepreg on static and dynamic flexural properties of continuous carbon fiber reinforced polyamide 6

2021 ◽  
Vol 87 (895) ◽  
pp. 20-00438-20-00438
Author(s):  
Masachika YAMANE ◽  
Shota NAKAKUBO ◽  
Koutarou KOIZUMI ◽  
Hideyuki UEMATSU ◽  
Shuichi TANOUE
Keyword(s):  
Carbon Fiber ◽  
Layer Thickness ◽  
Polyamide 6 ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced

Effects of high pressure on the crystallization of carbon fiber reinforced polyetheretherketone (CF/PEEK) laminate composites

1990 ◽  
Vol 48 (4) ◽  
pp. 876-877
Author(s):  
Hong-Ming Lin ◽  
C. H. Liu ◽  
R. F. Lee
Keyword(s):  
High Pressure ◽  
Carbon Fiber ◽  
Sample Surface ◽  
High Yield ◽  
Fiber Reinforced ◽  
Laminate Composites ◽  
Peek Composite ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced

Polyetheretherketone (PEEK) is a crystallizable thermoplastic used as composite matrix materials in application which requires high yield stress, high toughness, long term high temperature service, and resistance to solvent and radiation. There have been several reports on the crystallization behavior of neat PEEK and of CF/PEEK composite. Other reports discussed the effects of crystallization on the mechanical properties of PEEK and CF/PEEK composites. However, these reports were all concerned with the crystallization or melting processes at or close to atmospheric pressure. Thus, the effects of high pressure on the crystallization of CF/PEEK will be examined in this study.The continuous carbon fiber reinforced PEEK (CF/PEEK) laminate composite with 68 wt.% of fibers was obtained from Imperial Chemical Industry (ICI). For the high pressure experiments, HIP was used to keep these samples under 1000, 1500 or 2000 atm. Then the samples were slowly cooled from 420 °C to 60 °C in the cooling rate about 1 - 2 degree per minute to induce high pressure crystallization. After the high pressure treatment, the samples were scanned in regular DSC to study the crystallinity and the melting temperature. Following the regular polishing, etching, and gold coating of the sample surface, the scanning electron microscope (SEM) was used to image the microstructure of the crystals. Also the samples about 25mmx5mmx3mm were prepared for the 3-point bending tests.

Linear translaminar fracture characterization of additive manufactured continuous carbon fiber reinforced thermoplastic

2021 ◽  
pp. 089270572110214
Author(s):  
Weiller M Lamin ◽  
Flávio LS Bussamra ◽  
Rafael TL Ferreira ◽  
Rita CM Sales ◽  
José E Baldo
Keyword(s):  
Fracture Toughness ◽  
Carbon Fiber ◽  
Fracture Mechanics ◽  
Image Correlation ◽  
Fiber Reinforced ◽  
Fused Filament Fabrication ◽  
Critical Energy Release Rate ◽  
Linear Elastic ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced

This work presents the experimental determination of fracture mechanics parameters of composite specimens manufactured by fused filament fabrication (FFF) with continuous carbon fiber reinforced thermoplastic filaments, based on Linear Elastic Fracture Mechanics (LEFM). The critical mode I translaminar fracture toughness (KIc) and the critical energy release rate (GIc) are found for unidirectional and cross-ply laminates. The specimens were submitted to quasi-static tensile testing. Digital Image Correlation (DIC) is used to find the stress field. The stress fields around the crack tip are compared to linear elastic finite element simulations. The results demonstrate the magnitude of fracture toughness is in the same range as for polymers and some metals, depending on lay-up configuration. Besides, fractographic analyses show some typical features as river lines, fiber impression, fiber pulls-out and porosity aspects.

Layered self‐resistance electric heating to cure thick carbon fiber reinforced epoxy laminates

2021 ◽  
Author(s):  
Bo Zhang ◽  
Yingguang Li ◽  
Shuting Liu ◽  
Yingxiang Shen ◽  
Xiaozhong Hao
Keyword(s):  
Carbon Fiber ◽  
Electric Heating ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced
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