scholarly journals Bending Performance and Reinforcement of Rocker Panel Components with Unidirectional Carbon Fiber Composite

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3164 ◽  
Author(s):  
Huili Yu ◽  
Hui Zhao ◽  
Fangyuan Shi
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Fiber Composite ◽  
Fiber Material ◽  
High Strength ◽  
Carbon Fiber Composite ◽  
Bending Performance ◽  
Fiber Composite Material ◽  
Crash Safety ◽  
Carbon Fiber Material

Unidirectional carbon fiber composite material is one of the most common types of composites employed in vehicles, and its bending performance plays an important role in crash safety, especially in side pole impact. This study aimed to redesign one of the most important components of the side structure of a vehicle, the rocker panel, with unidirectional carbon fiber composite material. Our results show that it is not easy to acquire the same bending performance as that of a steel rocker panel by merely replacing it with carbon fiber material and increasing the wall thickness. Therefore, reinforcements were employed to improve the bending performance of the carbon fiber rocker panel, and a polypropylene reinforcement method achieved a weight reduction of 40.7% compared with high-strength steel.

scholarly journals Selectively Enhanced 3D Printing Process and Performance Analysis of Continuous Carbon Fiber Composite Material

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3529 ◽  
Author(s):  
Huiyan Luo ◽  
Yuegang Tan ◽  
Fan Zhang ◽  
Jun Zhang ◽  
Yiwen Tu ◽  
...  
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
3D Printing ◽  
Fiber Composite ◽  
Fiber Material ◽  
Carbon Fiber Composite ◽  
Fiber Composite Material ◽  
Carbon Fiber Material ◽  
Continuous Carbon Fiber ◽  
3D Printed

Aiming at the limited mechanical properties of general thermoplastic 3D printed models, a 3D printing process method for selective enhancement of continuous carbon fiber composite material is proposed. Firstly, the selective enhanced double nozzle working mechanism and crafts planning process are put forward. Then, based on the double nozzle carbon fiber 3D printing device, test samples are printed by polylactic acid (PLA) and carbon fiber material, and the test samples are enhanced by inserting layers of continuous carbon fiber material. The performance test of the samples is carried out. Experiment results show that when the volume fraction of continuous carbon fiber material increases gradually from 5% to 40%, the tensile strength increases from 51.22 MPa to 143.11 MPa. The performance improvement curve is fitted through experimental data. Finally, field scanning electron microscopy is used to observe the microscopic distribution of continuous fibers in the samples. The results of the research lay the foundation for the performance planning of 3D printed models.

The Influence of Eccentricity on Thrust Force of Helical Milling in Carbon Fiber Composite Holemaking

2013 ◽  
Vol 328 ◽  
pp. 995-999
Author(s):  
Zhi Hua Sha ◽  
Yi Wang ◽  
Sheng Fang Zhang
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Thrust Force ◽  
Fiber Composite ◽  
High Strength ◽  
Helical Milling ◽  
Carbon Fiber Composite ◽  
Fiber Composite Material ◽  
Tool Motion

Carbon fiber composite is widely used in aerospace and aircraft industries because of their remarkable advantages such as lightweight and high strength. As an effective holemaking technology, helical milling is widely used in machining carbon fiber composite material recently. In this paper, the mathematics modeling of tool motion in helical milling is studied and simulated; the effect of eccentricity on helical milling is analyzed and tested by experiment. From the analysis and experiment, a conclusion is drawn that: using a smaller diameter tool and larger eccentricity cause a decrease in thrust force and an improvement in delamination defects.

Electrical conductivity identification of a carbon fiber composite material plate using a rotating magnetic field and multi-coil eddy current sensor

2018 ◽  
Vol 83 (2) ◽  
pp. 20901 ◽  
Author(s):  
Ahmed Chaouki Lahrech ◽  
Bachir Abdelhadi ◽  
Mouloud Feliachi ◽  
Abdelhalim Zaoui ◽  
Mohammed Naїdjate
Keyword(s):  
Magnetic Field ◽  
Neural Networks ◽  
Electrical Conductivity ◽  
Composite Material ◽  
Carbon Fiber ◽  
Fiber Composite ◽  
Rotating Magnetic Field ◽  
Current Sensor ◽  
Carbon Fiber Composite ◽  
Fiber Composite Material

This paper proposes a contactless method for the identification of the electrical conductivity tensor of a carbon fiber composite materials plate using a rotating magnetic field and multi-coil eddy current sensor. This sensor consists of identical rectangular multi-coil, excited by two-phase sinusoidal current source in order to generate a rotating magnetic field and to avoid the mechanical rotation of the sensor. The fibers orientations, the longitudinal and transverse conductivities in each ply of carbon fiber composite material plate were directly determined with analysis of the impedance variation of each coil as function of its angular position. The inversion process is based on the use of artificial neural networks. The direct calculation associated with artificial neural networks makes use of 3D time-harmonic finite element method based on the A, V–A formulation.

Effect of Carbon Fiber Composite Material Casing on Blast Power of Explosive Charge

2009 ◽  
Vol 79-82 ◽  
pp. 461-464
Author(s):  
Wen Jin Yao ◽  
Xiao Ming Wang ◽  
Wen Bin Li ◽  
Xiao Hui Gu
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Explosive Charge ◽  
Fiber Composite ◽  
Pressure Sensors ◽  
Positive Pressure ◽  
High Speed Photography ◽  
Collateral Damage ◽  
Carbon Fiber Composite ◽  
Fiber Composite Material

A new kind of low collateral damage ammunition with Carbon fiber composite material casing is put forward. The operational principle of this ammunition and its configuration are introduced. Then the casting velocity of lethal unit and air shock wave pressure is analyzed theoretically and simulated. In order to study the effect of casing material on blast power, two different kinds of explosive charges are detonated. Overpressure curve of these two charges is measured using the pressure sensors. From the measured overpressure curve and theoretical simulation results, the duration of the positive pressure of the air blast pressure wave caused by the prototype model of the low collateral damage ammunition is bigger than the explosive charge with Carbon fiber composite material casing and naked explosive charge. From the high speed photography, the lethal units flight to a halt at a small distance. These results show the explosive charge with Carbon fiber composite material casing and metal powder can reduce destruction outside the radius of an intended target while enhancing its destructive force on the target.

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