Simulation on the mechanical performance and fracture behavior of unidirectional carbon fiber-reinforced composites

2021 ◽  
pp. 002199832110201
Author(s):  
Yan Ma ◽  
Tomohiro Yokozeki ◽  
Masahito Ueda ◽  
Yuqiu Yang ◽  
Hiroyuki Hamada ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Fracture Mode ◽  
Fracture Behavior ◽  
Mechanical Performance ◽  
Damage Mechanism ◽  
Tensile Tests ◽  
Polyamide 6 ◽  
Interface Properties ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Unidirectional carbon fiber reinforced polyamide 6 (CF/PA6) laminates after tensile tests exhibited two different types of fracture modes, namely, splitting and step-like. In this study, the mechanical properties and fracture behavior of the unidirectional CF/PA6 laminates were simulated and analyzed by using finite element simulation of a tensile test. The simulations considered the actual deformation and damage mechanism (matrix plastic deformation, stochastic fiber fracture, and interfacial debonding between the fiber and the matrix) experimentally observed in previous research. Results of the numerical simulations were in good with the experimental stress–strain curves. Moreover, the above-mentioned two types of fracture mode were well simulated by changing the interfacial properties. The simulated results showed that the unidirectional laminates with weak interface properties exhibit the splitting fracture mode. Meanwhile, the unidirectional laminates with strong interface properties show the step-like fracture behavior.

Improvement of the electrical conductivity of carbon fiber reinforced polymer by incorporation of nanofillers and the resulting thermal and mechanical behavior

2017 ◽  
Vol 52 (11) ◽  
pp. 1495-1503 ◽  
Author(s):  
K Hamdi ◽  
Z Aboura ◽  
W Harizi ◽  
K Khellil
Keyword(s):  
Electrical Conductivity ◽  
Carbon Fiber ◽  
Carbon Black ◽  
Electrical Current ◽  
Polyamide 6 ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

This work tends to characterize the effect of carbon black nanofillers on the properties of the woven carbon fiber reinforced thermoplastic polymers. First of all, composites from nanofilled Polyamide 6 resin reinforced by carbon fibers were fabricated. Scanning electron microscopy observations were performed to localize the nanoparticles and showed that particles penetrated the fiber zone. In fact, by reaching this zone, the carbon black nanofillers create a connectivity's network between fibers, which produces an easy pathway for the electrical current. It explains the noticed improvement of the electrical conductivity of the carbon black nanofilled composites. Electrical conductivity of neat matrix composite passed from 20 to 80 S/cm by adding 8 wt% of carbon black and to 140 S/cm by adding 16 wt% of the same nanofiller. The addition of nanofillers modifies the heating and cooling laws of carbon fiber reinforced polymer: the nanofilled carbon fiber reinforced polymer with 16 wt% is the most conductive so it heats less. Based on these results, the use of the composite itself as an indicator of this mechanical state might be possible. In fact, the study of the influence of a mechanical loading on the electrical properties of the composite by recording the variance of an electrical set is possible.

Effect of matrix crystallinity of carbon fiber reinforced polyamide 6 on static bending properties

2020 ◽  
pp. 1-14
Author(s):  
Takenobu Sakai ◽  
Nur Safiah Binti Shamsudim ◽  
Ryota Fukushima ◽  
Kensuke Kageyama
Keyword(s):  
Carbon Fiber ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Bending Properties ◽  
Carbon Fiber Reinforced

Effect of polyurethane sizing agent on interface properties of carbon fiber reinforced polycarbonate composites

2019 ◽  
Vol 136 (38) ◽  
pp. 47982
Author(s):  
Weisu Zhang ◽  
Changling Yang ◽  
Lili Yao ◽  
Zhihao Li ◽  
Shengxia Li ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Interface Properties ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced
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