The effects of interphase parameters on transverse elastic properties of Carbon–Carbon composites based on FE model

Ge, Jian; Qi, Lehua; Chao, Xujiang; Xue, Yibei; Hou, Xianghui; Li, Hejun

doi:10.1016/j.compstruct.2021.113961

Cited by 24 publications

(4 citation statements)

References 45 publications

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“…The transverse and shear moduli of glass/epoxy composites [17] and longitudinal and transverse modulus of AS4 carbon/3501-6 epoxy unidirectional composites are calculated using three phase constitutive model, and the values are in good match with experimental values. Ge et al [20] developed the FEM model, obtained the transverse properties of carbon/carbon composites, and observed that the values with interphase are close to experimental values. They also concluded that at lesser interphase thickness (less than 140 nm), the effect of interphase was also less on transverse modulus.…”

Section: Introductionmentioning

confidence: 69%

Effect of interphase thickness and fiber diameter on elastic properties of composites using multi-scale modelling

Udatha¹,

Sekhar²,

Velmurugan³

2022

Phys. Scr.

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Composite materials are the largely used engineering materials in aerospace and automobile industries due to their high specific strength and high specific stiffness. The properties of the composites are very much important to design and develop the machine parts. They vary with fiber content, fiber properties, matrix properties, and type of manufacturing process. Number of experiments are required to obtain the properties and the best combination of fibers and matrices. However, several analytical methods are available to find the properties of the composite to avoid the number of experiments. In the present study, the properties of CFRP, GFRP, Amino-functional multi-walled carbon nanotubes (CNT) added CFRP, CNT added GFRP composites have been calculated by using the properties of fiber, interphase between fiber and matrix, matrix, and CNT. The properties of CNT added epoxy are obtained using Halpin-Tsai equation in first stage, and in the second stage, the properties of interphase are calculated using the properties of CNT added epoxy and fiber properties. The third stage, the properties of CFRP and GFRP are calculated using three phase constitutive model by considering the properties of fiber, interphase, and CNT added matrix. The properties are calculated at fiber diameters: 8 μm and 14 μm while varying the fiber volume fraction (%): 0 to 70%, interphase thickness: 50 nm to 500 nm, weight fraction of CNT (%) added in epoxy: 0 to 5%. The addition of CNT has improved the elastic properties of CFRP and GFRP. The elastic properties of the composites are improved significantly with increase in the interphase thickness.

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Section: Introductionmentioning

confidence: 69%

Effect of interphase thickness and fiber diameter on elastic properties of composites using multi-scale modelling

Udatha¹,

Sekhar²,

Velmurugan³

2022

Phys. Scr.

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“…Z Front, Top, Left À Z Back, Bottom, Right ¼ 0 (11) where X, Y, and Z represent the displacements of the RVE model along the three directions, respectively. The established RVE model is divided into six faces (i.e., front and back, left and right, and top and bottom).…”

Section: Periodic Boundary Conditionmentioning

confidence: 99%

“…Vaughan et al 10 combined simulation and experimental statistics to build an RVE model with geometric characteristics similar to those of the experimental sample. Ge et al 11 used the NNA algorithm to evaluate the effect of interface parameters on the predicted elastic modulus.3) Random Sequence Expansion (RSE) algorithm. Lei et al 12 generated a stochastic distribution model with a high fiber volume fraction by adjusting the inter-fiber distance parameter.…”

Section: Introductionmentioning

confidence: 99%

A novel method for generating random fiber distributions for fiber-reinforced materials

Zeng

Liu

2023

Journal of Thermoplastic Composite Materials

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A new algorithm to generate Representative Volume Elements (RVEs) of random fiber distributions is presented in this study. The Random Sequence Expansion (RSE)_stirring algorithm generates the initial fiber random distribution. Subsequently, by stirring the generated fibers and highlighting the influence of fiber short-range spacing interactions, the method facilitates the capture of the real fiber distribution. To verify the soundness of the proposed algorithm, the RVE model, generated by the RSE_stirring algorithm, was analyzed using four statistical functions. The model was then statistically compared with the experimentally obtained real fiber distributions in a Completely Spatial Random (CSR) pattern. In this study, the equivalent modulus of the composite was also predicted using RVE and compared with the results predicted by other algorithms. The experimental and the predicted results showed a strong similarity.

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“…It was confirmed that the interphase thickness and elastic modulus are the dominate parameters determining the stress distributions and the effective properties of the composite, which in turn control the specific failure modes. The size and modulus of the interphase were found to be the critical parameters for the micromechanical performance of the composite when using finite element models, 20,21 the there-phase model, 22,23 and the Mori–Tanaka model. 24,25 Therefore, finding a simple and accurate strategy to measure the thickness and modulus of the interphase is an important challenge to be tackled.…”

Section: Introductionmentioning

confidence: 99%

Determination of the interfacial properties of carbon fiber reinforced polymers using nanoindentation

Zhu

Lang

Wang

et al. 2021

Journal of Reinforced Plastics and Composites

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The mechanical properties of the interphase play a key role in determining the overall performance of carbon fiber reinforced polymer (CFRP) composite materials. For this reason, it is important to develop a method to easily and precisely investigate the mechanical performance of the interphase of CFRP materials. In this work, the surface topography of the CFRP material was examined using scanning probe microscopy (SPM), which revealed the polished flat sample can meet the requirements of the nanoindentation testing. The local mechanical performance of the interphase of the CFRP was determined using nanoindentation based on the continuous stiffness measurement (CSM) method. The results show that the size of the interphase between the carbon fiber and the matrix is about 1.5 μm, and the corresponding modulus and hardness values were estimated to be 5–11 and 0.4–3.3 GPa, respectively, considering the fiber-bias effects. Mapping of the local mechanical properties of a selected area revealed that nanoindentation reproduced excellently the surface topography and characterized precisely the properties of the interphase between the carbon fibers and the matrix.

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The effects of interphase parameters on transverse elastic properties of Carbon–Carbon composites based on FE model

Cited by 24 publications

References 45 publications

Effect of interphase thickness and fiber diameter on elastic properties of composites using multi-scale modelling

Effect of interphase thickness and fiber diameter on elastic properties of composites using multi-scale modelling

A novel method for generating random fiber distributions for fiber-reinforced materials

Determination of the interfacial properties of carbon fiber reinforced polymers using nanoindentation

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