In situ observation of compression damage in a 3D needled-punched carbon fiber-silicon carbide ceramic matrix composite

Wan, Fan; Liu, Rongjun; Wang, Yanfei; Cao, Yingbin; Zhang, Changrui; Marrow, T J

doi:10.1016/j.compstruct.2018.11.041

Cited by 44 publications

(20 citation statements)

References 35 publications

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“…is affected by the arrangement of the carbon fibers. The observations are consistent with a previoius study of a similarly GSIproduced needle-stitched C-C/SiC composite that showed many randomly arranged short-cut fibers within the SiC, while in the cloth region the SiC was found only in the pores between the fiber bundles that were introduced by the needle insertion [17].…”

Section: Discussionsupporting

confidence: 90%

“…5c). These arise from the mismatch of thermal expansion of the fibers and matrix on cooling from the high temperature SI process [17], and the MIP analysis (Fig. 10) shows they form the greatest part of the open poroity.…”

Section: Discussionmentioning

confidence: 99%

“…GSI is a relatively more gentle reaction process than LSI and might be beneficial to the mechanical properties [9,15]. Previous studies of C/C-SiC composites produced by GSI have shown that microstructure defects and porosity have a significant effect on mechanical properties [16,17]. However, the details of the GSI process and the reaction mechanism, and their effects on densification and the spatial distributions of material and pores, require further study.…”

Section: Introductionmentioning

confidence: 99%

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Structure and flexural properties of 3D needled carbon fiber reinforced carbon and silicon carbide (C/C-SiC) composites fabricated by gaseous and liquid silicon infiltration

Wan

Pizada

Liu

et al. 2019

Ceramics International

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3D needled carbon fiber reinforced composites (C/C-SiC) were fabricated by gaseous silicon infiltration (GSI) for different reaction times, followed by further densification with liquid silicon infiltration (LSI). The density, flexural modulus and flexural strength increased as a spatially connected SiC structure developed, but the flexural strength could be degraded by a long total reaction time. The composites all exhibited quasi-brittle fracture with fiber bundle pull-out and interfacial debonding. Fracture could propagate within the needle bundles that were perpendicular to the tensile stress.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and flexural properties of 3D needled carbon fiber reinforced carbon and silicon carbide (C/C-SiC) composites fabricated by gaseous and liquid silicon infiltration

Wan

Pizada

Liu

et al. 2019

Ceramics International

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“…4b (i)). Similar cracks have been observed in braided and needled C/C-SiC composites [26,27], and occur on cooling from the high temperature of the GSI process because of the mismatch of thermal expansion coefficient between the anisotropic arrangement of carbon fiber bundles and matrix. No such cracks are visible in architecture ③, which has a more isotropic fiber distribution.…”

Section: C/c-sic Composite Microstructuressupporting

confidence: 60%

“…Consequently, XCT as an advanced non-destructive technique has been applied to a wide range of materials, including wood [13], concrete [14], gypsum [15], graphite [16,17] and polymer composites [18]. Various ceramic matrix composites [19][20][21][22][23] have also been investigated, but only a few studies have examined C/C-SiC composites [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Characterization by X-Ray Computed Tomography of C/C-SiC Ceramic Composites Fabricated with Different Carbon Fiber Architectures

et al. 2019

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The microstructure morphologies have been characterized by high resolution laboratory X-ray computed tomography in Carbon Fiber Reinforced Carbon and Silicon Carbide (C/C-SiC) ceramic composites fabricated by Gaseous Silicon Infiltration (GSI) from C/C preforms of three different architectures: 3D stitched cloth fabric; 3D orthogonal woven fabric; and needled shortcut felt. Each composites' microstructure was influenced by the structure of the C/C preform. By incorporating tomography with gravimetric analysis, the 3D distribution of the SiC was visualized, showing a connected SiC network in the needled shortcut felt, and more heterogeneous SiC formation on the surfaces of the fiber bundles in the stitched and woven fabrics. The needled shortcut felt provided the largest contact surface for the GSI reaction and generated~56% volume fraction of SiC, which is almost twice and three times that achieved in the stitched and woven fabrics respectively. Differences in the open and closed pore distributions were also measured by mercury intrusion porosimetry and tomography.

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Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

Shi,

Guo,

Niu

et al. 2024

Polymer Composites

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A RVE finite element model was developed, and the effective mechanical properties were predicted by analyzing the fine structure of Z‐pin reinforced composite laminates. A new damage criterion based on strain description is adopted, a progressive damage analysis model is established and progressive damage analysis is carried out, which provides a reference for further research on Z‐pin reinforced composites. By applying both longitudinal tensile and in‐plane shear loads to the RVE, the material strength prediction was carried out the damage evolution process was emphasized, and the stress–strain curves of the material as well as the damage modes and damage levels in different regions were finally predicted. From the damage evolution process, it can be seen that the damage in the fiber direction and the damage in the transverse direction appear the earliest and have the highest percentage of failure.Highlights The RVE model was developed and its effective mechanical properties were predicted. A new damage criterion is introduced, a UMAT subroutine is written, and a progressive damage model is developed. Material strength predictions were made for the RVE and the damage evolution process was emphasized.

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In situ observation of compression damage in a 3D needled-punched carbon fiber-silicon carbide ceramic matrix composite

Cited by 44 publications

References 35 publications

Structure and flexural properties of 3D needled carbon fiber reinforced carbon and silicon carbide (C/C-SiC) composites fabricated by gaseous and liquid silicon infiltration

Structure and flexural properties of 3D needled carbon fiber reinforced carbon and silicon carbide (C/C-SiC) composites fabricated by gaseous and liquid silicon infiltration

Microstructure Characterization by X-Ray Computed Tomography of C/C-SiC Ceramic Composites Fabricated with Different Carbon Fiber Architectures

Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

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