Compressive failure of unidirectional hybrid fibre-reinforced epoxy composites containing carbon and silicon carbide fibres

Sudarisman,; Davies, Ian J.; Hamada, Hussein M.

doi:10.1016/j.compositesa.2006.10.004

Cited by 25 publications

(12 citation statements)

References 12 publications

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“…Since SiC fibers are appealing candidates to reinforce polymer, metal, and ceramic matrices for applications in the fields of aviation, aerospace, and nuclear power, studies have been devoted to optimizing the composition and structure of the fibers to improve their high‐temperature stability. Excess oxygen in the SiC fibers, Nicalon 200 (Nippon Carbon Co., Ltd., Tokyo, Japan) and Tyranno LOX‐M (Ube Industries, Ltd., Ube‐shi, Japan), was proved to be detrimental due to decomposition of the SiC x O y amorphous phase above 1200°C .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nearly stoichiometric polycrystalline SiC fibers with excellent high‐temperature stability up to 1900°C

Gou

Wang

et al. 2017

J Am Ceram Soc

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Due to the extensive applications of SiC fiber-reinforced composite materials in the fields of aviation, aerospace, and nuclear power, there are increasing demands for SiC fibers with both excellent mechanical performance and high-temperature stability. In this work, nearly stoichiometric polycrystalline SiC fibers were fabricated using amorphous Si-C-Al-O fibers with excess carbon and oxygen (C/ Si = 1.34, O content: 7.74 wt%). The nearly stoichiometric composition (C/ Si = 1.05) of the product fibers was achieved by thermal decomposition of the starting fibers. The fibers were well-crystallized with grain sizes of~200 nm due to sintering at a high temperature of 1900°C. The fibers exhibited a high tensile strength and a high elastic modulus and were composed of SiC grains with twins and stacking-faults, exhibiting intragranular fracture behavior. Furthermore, the fibers maintained their original tensile strength after being maintained at 1800°Cfor 5 hour or at 1900°C for 1 hour under an inert atmosphere, and they exhibited a high strength retention (97%) after exposure at 1300°C for 1 hour under air.The high-temperature stability and creep resistance of the fibers were comparable to that of commercial Hi-Nicalon S and Tyranno SA fibers. K E Y W O R D Sannealing, fibers, silicon carbide, thermal treatment, ultra-high temperature ceramics

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Section: Introductionmentioning

confidence: 99%

Fabrication of nearly stoichiometric polycrystalline SiC fibers with excellent high‐temperature stability up to 1900°C

Gou

Wang

et al. 2017

J Am Ceram Soc

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“…ELISA is a plate-based testing technique designed to detect and measure peptides, proteins, antibodies and hormones. ELISA test can be done in a relatively fast time with high sensitivity and specificity (7,8) .…”

Section: Introductionmentioning

confidence: 99%

The increasing of Interleukin 6 and Superoxide Dismutase 3 nasal wash in textile industry workers exposed by occupational air pollutant

Paramitha¹

2020

IJST

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Background: Occupational air pollution exposure in textiles industry which irritates the respiration system triggers the disturbance of the nasal mucosa. IL-6 is produced by monocytes and macrophages as a response for tissue damage. SOD-3 is extracellular enzymes protected the tissue from free radical and chronic inflammation. Objectives: To know if the occupational air pollution affects the increasing of IL-6 and SOD-3 level on nasal wash. Methods: this study used an analytical observational design with cross-sectional method. It was conducted on 40 male workers of garment industry in Bawen, Semarang, Indonesia. Divided into two groups: the dyeing and sizing area with 20 workers each group. The workers exposed to the occupational air pollutant for 5 years or more. The aquabidest will be injected to subject's nosetril using the 20cc spuit. The nasal wash's sample on the 1.5ml eppendorf tubes will be examined using ELISA method to determine the IL-6 and SOD-3 level. The occupational air pollution indicators will be measured by Envilab Semarang. Findings : The measurements of direct PM10 and PM2.5 in dyeing and sizing area were higher than the regulatory limit. There was a significant difference in the IL-6 level in dyeing and sizing area (p=0,010). There was no significant difference in the SOD-3 level in dyeing and sizing area (p=0,443). There was a positive, moderate and significant correlation between IL-6 and SOD-3 in dyeing and sizing area (r=0.320). Conclusion: The study concluded that the occupational air pollution especially the PM10 and PM2.5 affects the IL-6 and SOD-3 level in the textile industry workers' nasal wash. There is a significant correlation between the IL-6 and SOD-3 level in textile industry workers at dyeing and sizing area. There is a difference in the IL-6 level in dyeing and sizing area. But there is no significant in the SOD-3 level in dyeing and sizing area. The higher occupational air pollution inhaled will be compensated with the higher expression of IL-6 and SOD-3. The higher exposure of PM2.5 in the dyeing area results in the higher level of IL-6 and SOD-3.

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“…An FRP has anisotropic mechanical properties owing to the orientation arrangement structure of the fibers in FRP. The compressive properties of FRPs are generally lower than the tensile properties, e.g., the compressive strength usually ranges between several tens to hundreds of MPa, which is 50-60% of their tensile strength [3,4]. The ratio of the tensile strength to the compressive strength of aramid fiber-reinforced composite is 0.15.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Longitudinal Compressive Properties of Unidirectional FRP Based on Microbuckling Compression Failure Mechanism

Ruan

Hou

et al. 2018

Journal of Engineered Fibers and Fabrics

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In this study, a new methodology to improve the longitudinal compressive strength and modulus of ultra-high molecular weight polyethylene (UHMWPE) fiber-reinforced epoxy resin matrix is developed. The proposed method involves wrapping a UHMWPE fiber bundle with a poly-p-phenylene benzobisoxazole fiber filament using a winding method, and using these bundles to fabricate unidirectional UHMWPE fabric. UHMWPE/epoxy composites were fabricated using vacuum-assisted resin-transfer molding (VARTM), and the compression properties of the composite were evaluated and compared to investigate the effect of the filament wrapping. Improvements in the compressive modulus were achieved for filaments wound with applied tension, and when increasing the filament-winding spacing; however, the compressive strength decreased with an increase in the filament-winding spacing. Results obtained confirm that fiber microbuckling failure occurred in the composite under longitudinal compression, and that inhibiting the buckling length of the fiber improved compressive properties. These results may be useful when designing the mechanical properties of fiber-reinforced polymer composites.

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Compressive failure of unidirectional hybrid fibre-reinforced epoxy composites containing carbon and silicon carbide fibres

Cited by 25 publications

References 12 publications

Fabrication of nearly stoichiometric polycrystalline SiC fibers with excellent high‐temperature stability up to 1900°C

Fabrication of nearly stoichiometric polycrystalline SiC fibers with excellent high‐temperature stability up to 1900°C

The increasing of Interleukin 6 and Superoxide Dismutase 3 nasal wash in textile industry workers exposed by occupational air pollutant

Enhancing Longitudinal Compressive Properties of Unidirectional FRP Based on Microbuckling Compression Failure Mechanism

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