Modelling the needling effect on the stress concentrations of laminated C/C composites

Jia, Yongzhen; Liao, Dunming; Cui, Hong; A-lin, JI; Bai, Xia; Yasir, Muhammad

doi:10.1016/j.matdes.2016.04.101

Cited by 25 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this technique, unidirectional cloths and short-fibre felts are stacked in alternating layers. The stacks are punched with hook-fitted needles to create three-dimensional structural preforms [9]. Complex shape preforms can be produced quickly and cheaply through needle-punching.…”

Section: Introductionmentioning

confidence: 99%

“…However, many parameters of the needling processes, such as needling diameter, density, distribution, and depth may vary with the high speed of the needle-punching process, which results in changes to the properties of the composite. The influence of these structural parameters on the mechanical properties of the composite was investigated in previous studies [9,10,11,12]. A considerable amount of research has also been conducted to investigate the influence of different types of manufacturing porosities on the effective thermal properties of two-dimensional weave composites [13,14,15,16,17,18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Needling Parameters and Manufacturing Porosities on the Effective Thermal Conductivity of a 3D Carbon–Carbon Composite

et al. 2019

View full text Add to dashboard Cite

Needle-punching is used as an alternative to expensive and sophisticated three-dimensional (3D) weaving processes to prepare a 3D composite. In this study, a 3D needled carbon–carbon (C/C) composite structure was examined using X-ray tomography and scanning electron microscopy (SEM). The effects of manufacturing porosities, needling diameter and needling density on the thermal conductivity of the composite were determined through multiscale finite-element modelling. The degradation of thermal conductivity caused by the manufacturing porosity was higher in the longitudinal direction than in the through-thickness direction. Moreover, it was found that the through-thickness thermal conductivity of the composites increased with increasing needling diameter and density.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Needling Parameters and Manufacturing Porosities on the Effective Thermal Conductivity of a 3D Carbon–Carbon Composite

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The compression process will make the needled felt dense and thin, and the needling process will make the fibers entangled with each other. Jia et al [34] had simulated the needling process by using free continuous fiber to represent the short fiber, but the free continuous fiber could not truly reflect the structural changes of needled felt. In this study, the cut model (20 Â 20 Â 6 mm 3 ) was used to simulate the pre-needling process, and the simulation was carried out in ABAQUS/Explicit.…”

Section: Cut Modelmentioning

confidence: 99%

Statistics-based full-scale three-dimensional geometric model and fiber length distribution for carbon fiber needled felt

Song

Zhao

et al. 2017

Journal of Industrial Textiles

View full text Add to dashboard Cite

In this study, the fiber-shift method is presented to generate the three-dimensional geometric model of carbon fiber needled felt, and curved carbon fiber is regarded as beam under pure bending. The finite mixture model is applied to describe the fiber length distribution for the experiments and models. Closed model, open model and cut model are proposed, and cut model is thought to be more close to reality. A series of analytical methods are proposed to investigate the full-scale three-dimensional geometric model. The fiber-length distributions of cut models with different dimensions are obtained. The results show that, with the increasing of border length of cut model, the percentage of carbon fiber been cut is getting smaller, and the average fiber length is increased. In addition, the compression and needling process of pre-needling technique are simulated, and the needling hole obtained by simulation is similar to reality.

show abstract

“…However, in-plane fibers would be damaged, and the needling holes could be left at the needling positions. 29 In the needling holes, a lot of fiber breakage can be observed. During the needling process, the fabric layers are needle-punched repeatedly.…”

Section: Needling Process and Materials Microstructurementioning

confidence: 99%

High-temperature constitutive model for three-dimensional needled C/C-SiC composite under tensile loading

Xie

Chen

Liang

2016

Journal of Composite Materials

View full text Add to dashboard Cite

Tensile experiments of three-dimensional needled C/C-SiC composite from room temperature to 1800℃ were performed to investigate tensile behavior. The damage characteristics and macroscopic mechanical behavior of the composite are relevant to the testing temperature and off-axis angles of the tensile loading. The tensile strength increased while the modulus decreased with the increase of temperature. A high-temperature nonlinear constitutive model was established to analyze the nonlinear stress–strain relationship of the composite. Plastic strain accumulation and stiffness degeneration were described by the plasticity and damage theories. The effect of temperature on the tensile behavior of the composite was particularly considered in this model by introducing a thermal damage variable. The proposed constitutive model can predict the stress–strain behavior of the material subjected to different off-axis tensile load, and at different temperatures. Fairly good agreement was achieved between the predicted and experimental results.

show abstract

Modelling the needling effect on the stress concentrations of laminated C/C composites

Cited by 25 publications

References 30 publications

Effect of Needling Parameters and Manufacturing Porosities on the Effective Thermal Conductivity of a 3D Carbon–Carbon Composite

Effect of Needling Parameters and Manufacturing Porosities on the Effective Thermal Conductivity of a 3D Carbon–Carbon Composite

Statistics-based full-scale three-dimensional geometric model and fiber length distribution for carbon fiber needled felt

High-temperature constitutive model for three-dimensional needled C/C-SiC composite under tensile loading

Contact Info

Product

Resources

About