Fe–Ni alloy coatings on carbon fiber reinforced carbon matrix composite with an enhanced interface prepared through ultrasound-assisted electrodeposition

2019 ◽  
Vol 9 (6) ◽  
pp. 648-652
Author(s):  
Xu Zhang ◽  
Xueping Gan ◽  
Yichun Liu ◽  
Ming Xie ◽  
Jianhong Yi
Keyword(s):  
Carbon Fiber ◽  
Matrix Composite ◽  
Stress Reduction ◽  
Carbon Matrix ◽  
Fiber Reinforced ◽  
Interface Shear ◽  
Composite Surface ◽  
Thermal Expansion Coefficients ◽  
Ultrasound Assisted ◽  
Carbon Fiber Reinforced

Fe–Ni alloys with low thermal expansion coefficients were deposited on carbon fiber reinforced carbon matrix composite (C/C composite) as metallization coatings via ultrasound-assisted electrodeposition. The interface was compact at the micrometer scale, and the micro-cracks and pores on the composite surface were fully filled with the deposited alloy. The interface shear strength reached 16.24 MPa, which was a significant improvement in comparison with that of the conventional electrodeposition. These results may have been due to the residual stress reduction, the joining area increasement, and the pinning effect enhancement.

Experimental and numerical investigation on wear behavior of carbon-fiber-reinforced carbon matrix composite used in rotary gas seals

2020 ◽  
pp. 135065012091985
Author(s):  
Fei Lu ◽  
Jian Liu
Keyword(s):  
Carbon Fiber ◽  
Matrix Composite ◽  
Orientation Angle ◽  
Carbon Matrix ◽  
Operating Conditions ◽  
Fiber Reinforced ◽  
Wear Simulation ◽  
Wear Rates ◽  
Carbon Fiber Reinforced ◽  
Gas Seals

This paper presents a numerical method for simulating progressive wear of the carbon-fiber-reinforced carbon matrix composite used in rotary gas seals due to high experimental cost. In this study, the carbon-fiber-reinforced carbon matrix composite wear rates are experimentally measured, and a formula for the carbon-fiber-reinforced carbon matrix composite wear rates and material design parameters (orientation angles and densities) and operating parameters (load and velocities) is fitted as an input to the wear simulation. A finite element incremental wear simulation procedure for the pin-on-disk wear problem is presented by calculating the local nodal wear rate and wear direction and by introducing the Arbitrary Lagrangian Eulerian adaptive meshing method. In the procedure, the relation between the anisotropy of carbon-fiber-reinforced carbon matrix composite and the varied orientation angle is considered. Results show that the calculated wear volume agrees well with the experimental data. And then the numerical methodology is utilized to investigate the effects of time, orientation angle and operating conditions on the disk wear. The developed numerical methodology could be applied to other sliding wear problems in engineering machinery.

scholarly journals A prediction model of thrust force for drilling of bidirectional carbon fiber–reinforced carbon matrix composites

2020 ◽  
Vol 103 (2) ◽  
pp. 003685042092522
Author(s):  
Chenwei Shan ◽  
Shengnan Zhang ◽  
Menghua Zhang ◽  
Kaifeng Qin
Keyword(s):  
Carbon Fiber ◽  
Prediction Model ◽  
Thrust Force ◽  
Carbon Matrix ◽  
Fiber Reinforced Polymer ◽  
Material Structure ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

Carbon fiber–reinforced carbon matrix composites have been widely used for the manufacturing of thermostructural parts for several industries such as the aerospace and automotive. Drilling is an extremely common method used in the machining of carbon fiber–reinforced carbon matrix composites before assembly. However, their non-homogeneous, anisotropic, and brittle nature make difficult to guarantee the hole quality in drilling. Some severe drilling defects, such as burrs, delamination, and tear, usually occur. In this regard, it is necessary to accurately predict the thrust force in drilling of carbon fiber–reinforced carbon matrix composites. Therefore, in this article, based on the cutting theory of fiber-reinforced polymer composites, an alternative thrust force prediction model for drilling of bidirectional carbon fiber–reinforced carbon matrix composites is proposed. The cutting force of the cutting lips is established by dividing the cutting deformation zone into three regions according to the machined material structure based on the Zhang’s model in cutting of fiber-reinforced polymer. The periodic variation of fiber orientation is considered in detail. The experimental results show that the relative deviations of the predicted and experimental values of the thrust force are less than 14.36%.

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