scholarly journals Research on energy-absorption and failure of carbon fiber reinforced epoxy resins double cone structure

2020 ◽  
Vol 1507 ◽  
pp. 062006
Author(s):  
Ch F Zhao ◽  
Zh T Zhou ◽  
J Ren ◽  
Ch L Xing ◽  
J L Zhong ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Energy Absorption ◽  
Epoxy Resins ◽  
Double Cone ◽  
Fiber Reinforced ◽  
Cone Structure ◽  
Carbon Fiber Reinforced

NMR detection of thermal damage in carbon fiber reinforced epoxy resins

2005 ◽  
Vol 172 (2) ◽  
pp. 342-345 ◽  
Author(s):  
Steven K. Brady ◽  
Mark S. Conradi ◽  
Christopher M. Vaccaro
Keyword(s):  
Carbon Fiber ◽  
Epoxy Resins ◽  
Thermal Damage ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

scholarly journals Optimization Simulation of the Light Aircraft’s Cockpit Made of Carbon Fiber Reinforced Composites

2017 ◽  
Author(s):  
Pu-Woei Chen ◽  
Chia-Hung Liu
Keyword(s):  
Aluminum Alloy ◽  
Topology Optimization ◽  
Carbon Fiber ◽  
Energy Absorption ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Composites ◽  
Carbon Fiber Reinforced ◽  
The Impact

Due to the demands of personal travels and entertainments, light airplanes and small business aircrafts are developing rapidly. Light airplane structure is simple; however, it lacks crashworthiness design, especially the considerations on the impact of energy absorption. Therefore, in an event of accident, significant damage to passengers will be usually incurred. Airplanes made of composite materials structurally have high specific strength and good aerodynamic configuration. These materials have become the primary choice for new airplane development. This study mainly explores the topology optimization analysis of the light aircraft’s cockpit made of carbon fiber reinforced composites. This paper compares the compression amounts in the original models of composite material and aluminum alloy fuselages with the models after optimization during the crash-landing, in order to investigate the safety of fuselages made of different materials after structural optimization under the dynamic crashing. This study found that the energy absorbed by the aluminum alloy fuselage during crash-landing is still higher than that by the carbon fiber reinforced composites fuselage. On the other hand, the aluminum alloy fuselage after topology optimization could have an energy absorption capability enhanced by 40%, as compared to the that of the original model of aluminum alloy fuselage.

scholarly journals Effect of CNTs Additives on the Energy Balance of Carbon/Epoxy Nanocomposites during Dynamic Compression Test

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 194 ◽  
Author(s):  
Manel Chihi ◽  
Mostapha Tarfaoui ◽  
Chokri Bouraoui ◽  
Ahmed El Moumen
Keyword(s):  
Carbon Fiber ◽  
Energy Absorption ◽  
Split Hopkinson Pressure Bar ◽  
Dynamic Properties ◽  
Dynamic Compression ◽  
Fiber Reinforced Polymers ◽  
Strain Rates ◽  
Fiber Reinforced ◽  
Reinforced Polymers ◽  
Carbon Fiber Reinforced

Previous research has shown that nanocomposites show not only enhancements in mechanical properties (stiffness, fracture toughness) but also possess remarkable energy absorption characteristics. However, the potential of carbon nanotubes (CNTs) as nanofiller in reinforced epoxy composites like glass fiber-reinforced polymers (GFRP) or carbon fiber-reinforced polymers (CFRP) under dynamic testing is still underdeveloped. The goal of this study is to investigate the effect of integrating nanofillers such as CNTs into the epoxy matrix of carbon fiber reinforced polymer composites (CFRP) on their dynamic energy absorption potential under impact. An out-of-plane compressive test at high strain rates was performed using a Split Hopkinson Pressure Bar (SHPB), and the results were analyzed to study the effect of changing the concentration of CNTs on the energy absorption properties of the nanocomposites. A strong correlation between strain rates and CNT mass fractions was found out, showing that an increase in percentage of CNTs could enhance the dynamic properties and energy absorption capabilities of fiber-reinforced composites.

Mechanical Characterization of a Hybrid Carbon Nanotube/Carbon Fiber Reinforced Composite

2013 ◽  
Author(s):  
Mehran Tehrani ◽  
Ayoub Y. Boroujeni ◽  
Ramez Hajj ◽  
Marwan Al-Haik
Keyword(s):  
Carbon Fiber ◽  
Tensile Properties ◽  
Energy Absorption ◽  
Impact Energy ◽  
High Speed ◽  
Fiber Reinforced ◽  
Fiber Reinforced Polymer Composites ◽  
Out Of Plane ◽  
Carbon Fiber Reinforced ◽  
The Impact

Carbon fiber reinforced polymer composites (CFRPs) are renowned for their superior in-plane mechanical properties. However, they lack sufficient out-of-plane performance. Integrating carbon nanotubes (CNTs) into structures of CFRPs can enhance their poor out-of-plane properties. The present work investigates the effect of adding CNTs, grown on carbon fibers via a relatively low temperature growth technique, on the on and off-axis tensile properties as well as on transverse high velocity impact (∼100 m.s−1) energy absorption of the corresponding CFRPs. Two sets of composite samples based on carbon fabrics with surface grown CNTs and reference fabrics were fabricated and mechanically characterized via tension and impact tests. The on-axis and off-axis tests confirmed improvements in the strength and stiffness of the hybrid samples over the reference ones. A gas gun equipped with a high-speed camera was utilized to evaluate the impact energy absorption of the composite systems subjected to transverse spherical projectiles. Due to the integration of CNTs, intermediate improvements in the tensile properties of the CFRP were achieved. However, the CFRPs’ impact energy absorption was improved significantly.

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