Manufacturing technique and verification for the mechanical fastening section of carbon fiber reinforced anisogrid composite structures

2021 ◽  
Vol 268 ◽  
pp. 113895
Author(s):  
Yeon-Gwan Lee ◽  
Dae-Oen Lee
Keyword(s):  
Carbon Fiber ◽  
Composite Structures ◽  
Fiber Reinforced ◽  
Manufacturing Technique ◽  
Mechanical Fastening ◽  
Carbon Fiber Reinforced

Buckling Analysis of Carbon Fiber Reinforced Plastics Cylinders under Axial Compression

2013 ◽  
Vol 395-396 ◽  
pp. 76-79
Author(s):  
Da Huang ◽  
Cheng Hong Duan
Keyword(s):  
Carbon Fiber ◽  
Axial Compression ◽  
Composite Structures ◽  
Fiber Reinforced ◽  
Element Analysis ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced ◽  
The Stability

In this paper, the stability of carbon fiber reinforced plastics (CFRP) cylinders under axial compression was studied by the finite element analysis method. According to the Riks method, compressive capacity of the composite structures was investigated by nonlinear analysis, in which the eigen buckling modes were considered in the form of initial defects. And the post-buckling performances of different structures were also compared.

Polymer Matrix Composites with Shape Memory Properties

2014 ◽  
Vol 783-786 ◽  
pp. 2509-2516 ◽  
Author(s):  
Fabrizio Quadrini
Keyword(s):  
Carbon Fiber ◽  
Shape Memory ◽  
Epoxy Resin ◽  
Composite Structures ◽  
Polymer Matrix Composites ◽  
Fiber Reinforced ◽  
Mechanical Stiffness ◽  
Shape Memory Properties ◽  
Carbon Fiber Reinforced ◽  
Shape Memory Composite

Shape memory composites and structures were produced by using carbon fiber reinforced prepregs and a shape memory epoxy resin. The matrix of the prepregs was an epoxy resin as well but without remarkable shape memory properties. This way, two different technical solutions were adopted. Shape memory composite tubes and plates were made by adding a shape memory layer between two carbon fiber reinforced skins. An optimal adhesion between the different layers was achieved thanks to the compatibility of the prepreg matrix and the shape memory material. Shape memory composite structures were also produced by joining composite shells with shape memory foams. Mechanical, dynamic mechanical and shape recovery tests were carried out to show the properties of the composite materials and structures. Results confirm the ability of this class of materials to easily change their shape without affecting the mechanical stiffness of the recovered structures.

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

2012 ◽  
Vol 24 (8) ◽  
pp. 991-1006 ◽  
Author(s):  
Oliver J Myers ◽  
George Currie ◽  
Jonathan Rudd ◽  
Dustin Spayde ◽  
Nydeia Wright Bolden
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Nondestructive Evaluation ◽  
Composite Laminates ◽  
Composite Structures ◽  
Single Layer ◽  
Polymeric Composite ◽  
Analytical Models ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Defects in composite laminates are difficult to detect because of the conductive and paramagnetic properties of composite materials. Timely detection of defects in composite laminates can improve reliability. This research illustrates the preliminary analysis and detection of delaminations in carbon fiber laminate beams using a single layer of magnetostrictive particles and noncontacting concentric magnetic excitation and sensing coils. The baseline analytical models also begin to address the intrusive nature of the magnetostrictive particles as well as relate the applied excitation field with the stress and magnetic flux densities induced in the magnetostrictive layer. Numerical methods are used to begin to characterize the presence of magnetostrictive particles in the laminate and the behavior of the magnetostrictive particles in relationship to the magnetic field used during sensing. Unidirectional laminates with embedded delaminations are used for simulations and experimentations. A novel, yet simplified fabrication method is discussed to ensure consistent scanning and sensing capabilities. The nondestructive evaluation scanning experiments were conducted with various shapes and sizes of damages introduced into carbon fiber–reinforced polymeric composite structures. The results demonstrate high potential for magnetostrictive particles as a low-cost, noncontacting, and reliable sensor for nondestructive evaluation of composite materials.

Effects of Delaminations on Vibration Characteristic for HT3/5224 Carbon Fiber Reinforced Laminated Plate

2013 ◽  
Vol 652-654 ◽  
pp. 52-55
Author(s):  
Wei Liang ◽  
Yu Feng Liu ◽  
Nai Bin Yang
Keyword(s):  
Carbon Fiber ◽  
Fundamental Frequency ◽  
Composite Laminates ◽  
Composite Structures ◽  
Great Influence ◽  
Vibration Characteristic ◽  
Laminated Plate ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Kirchhoff Theory

Delaminating of composite is one of keys for composite structures. An energy method was used to analyze the fundamental frequency of HT3/5224 carbon fiber reinforced laminated plate in this paper. Different delaminated situations are considered in analysis on vibration of composite based on Kirchhoff theory. The results show that delaminations have a great influence on the fundamental frequency of laminated plate. The discussion shows inner delaminations have more influence on composite laminates than surface delaminations. Different kinds of delaminations can interact each other and the interaction can increase the influence on frequency.

Enhanced damping characteristics of carbon fiber reinforced polymer–based shear thickening fluid hybrid composite structures

2020 ◽  
Vol 31 (20) ◽  
pp. 2291-2303
Author(s):  
Jaehyeong Lim ◽  
Sang-Woo Kim
Keyword(s):  
Carbon Fiber ◽  
Hybrid Composite ◽  
Composite Structures ◽  
Shear Thickening ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Shear Thickening Fluid ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

Lightweight carbon fiber reinforced polymer composite structures with high stiffness are at risk of resonant vibration. Our study proposes a methodology to reduce this risk by passively improving the damping ratio of carbon fiber reinforced polymer composite structures. We developed shear thickening fluid hybrid composite structures by applying polyimide tubes filled with shear thickening fluid having rheological properties into a composite laminate. In order to verify the proposed methodology, carbon fiber reinforced polymer–based shear thickening fluid hybrid composite beams were fabricated, and modal tests were subsequently performed to investigate their dynamic characteristics. The results revealed that the damping ratios for the initial six vibration modes of the carbon fiber reinforced polymer–based shear thickening fluid hybrid composite beam increased by 38%–174%; however, their Young’s modulus and tensile strength, respectively, decreased by 11.25% and 14.08% when compared to those of normal carbon fiber reinforced polymer composite beams. We believe that the proposed methodology to improve the damping ratio will contribute in reducing the risk of vibration resonance of carbon fiber reinforced polymer composite structures in various applications.

Computational Investigation of Delamination in HAT-Section Laminated Composite Components

2011 ◽  
Vol 110-116 ◽  
pp. 1161-1165
Author(s):  
Hamid Soltani ◽  
S.M.Mohseni Shakib ◽  
M. Asadi ◽  
M.K. Ramezani
Keyword(s):  
Carbon Fiber ◽  
Epoxy Resin ◽  
Composite Structures ◽  
Laminated Composite ◽  
Fiber Reinforced ◽  
Linear Elastic ◽  
Laminated Composite Structures ◽  
Precise Prediction ◽  
Carbon Fiber Reinforced ◽  
Future Work

This paper aims at developing the numerical of delamination in laminated composite structures. Formation of initial delamination and growth of existing delamination in HAT-Section laminated made of plies of unidirectional carbon fiber reinforced epoxy resin is investigated computationally. Tsai-Hill failure method is employed to predict delamination initiation while delamination propagation is analyzed using linear elastic fracture mechanics (LEFM).The techniques based on LEFM that have been utilized successfully within the framework of the finite element method (FEM) for the simulation of delamination growth, the virtual crack closer technique (VCCT). Finally this paper proposes future work for precise prediction of delamination of unidirectional carbon fiber reinforced epoxy resin HAT-Section specimens.

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