Characterization and Modeling Damage and Fracture of Prepreg-MI SiC/SiC Composites under Tensile Loading at Room Temperature

Liu, Hu; Li, Longbiao; Yang, Jianxiao; Zhou, Yiran; Ai, Yingjun; Qi, Zhe; Gao, Ye; Jiao, Jian

doi:10.1007/s10443-022-10015-6

Cited by 19 publications

(7 citation statements)

References 53 publications

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“…In this stage, the matrix damage occurs but is small enough, 48,49 which does not affect the linear elastic tensile behavior. 50 In other words, the observed strain originates from the elastic deformation of SiC matrix, F I G U R E 9 (A) Strain-stress response of unidirectional SiC f /SiC composites with h-BN interphase stretch along the fiber direction, damage evolution, and SEM image obtained from tensile of SiC f /SiC composites using standard ASTM D 3379-75, 45 and (B) reconstructed image from synchrotron x-ray computed micro-tomography. 46 SiC fiber, and h-BN interphase under the applied tensile load.…”

Section: Single-fiber Rve Longitudinal Tension Along the Fibermentioning

confidence: 99%

Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

et al. 2023

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To understand the microscale toughening mechanism, the crack propagation, and stress–strain response of unidirectional SiCf/SiC composites with h‐BN interphase under transverse and longitudinal tension are investigated by a promising micromechanical phase field (PF) method along with representative volume element. Of much interest, the calculation results are well consistent with the available experimental results. With a strong dependence on the interphase strength, the toughening mechanisms during crack propagation are well presented, for example, fiber pull‐out, crack deflection, and interphase debonding. Furthermore, the longitudinal tensile strength of SiCf/SiC composites increases with decreasing the interphase strength, where only a weak enough interphase can result in a significant crack deflection by its cracking. In particular, the ratio of the interphase strength along fibers to the matrix strength should be less than 1.254 to ensure crack deflection in the interphase and fiber pull‐out. Moreover, the transverse tensile strength of SiCf/SiC composites reaches a maximum with increasing the interphase thickness into the range of 0.25–0.5 µm.

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Section: Single-fiber Rve Longitudinal Tension Along the Fibermentioning

confidence: 99%

Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

et al. 2023

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“…The carbon-bonded carbon fiber (CBCF) composite is a low-density C/C composite with chopped carbon fiber as the skeleton and phenolic resin as the binder. Due to its low density (0.10~1 g cm −3 ), high porosity (60~90%), low thermal conductivity (<1 W m −1 k −1 ), and excellent high-temperature stability, it is widely used in the field of thermal insulation [ 1 , 2 , 3 , 4 , 5 , 6 ]. At present, the main preparation methods of CBCF composites are vacuum filtration, pressure filtration, and whole needle-punching method [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Preparation of Carbon-Bonded Carbon Fiber Based on Glucose-Polyacrylamide Hydrogel Derived Carbon as Binder

Zeng

Xie

et al. 2023

Nanomaterials

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Lightweight, high-temperature-resistant carbon-bonded carbon fiber (CBCF) composites with excellent thermal insulation properties are desirable materials for thermal protection systems in military and aerospace applications. Here, glucose was introduced into the polyacrylamide hydrogel to form the glucose-polyacrylamide (Glu-PAM) hydrogel. The CBCF composites were prepared using the Glu-PAM hydrogel as a brand-new binder, and the synergistic effect between glucose and acrylamide was investigated. The results showed the Glu-PAM hydrogel could limit the foaming of glucose and enhance the carbon yield of glucose. Meanwhile, the dopamine-modified chopped carbon fiber could be uniformly mixed by high-speed shearing to form a slurry with the Glu-PAM hydrogel. Finally, the slurry was successfully extruded and molded to prepare CBCF composites with a density of 0.158~0.390 g cm−3 and excellent thermal insulation performance and good mechanical properties. The compressive strength of CBCF composites with a density of 0.158 g cm−3 in the Z direction is 0.18 MPa, and the thermal conductivity in the Z direction at 25 °C and 1200 °C is 0.10 W m−1 k−1 and 0.20 W m−1 k−1, respectively. This study provided an efficient, environment-friendly, and cost-effective strategy for the preparation of CBCF composites.

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“…The interfacial layer serves as a critical bonding element between the fibers and the matrix in SiC f /SiC composites. The microstructures of this interface significantly influence the mechanical characteristics of the composites, particularly their toughness 6–9 . In SiC f /SiC composites, interfaces have the capacity to hinder crack propagation, transmit loads from the matrix to the fibers, subsequently relieving residual thermal stresses, and offer protective measures during both the preparation and utilization phases 10 .…”

Section: Introductionmentioning

confidence: 99%

“…The microstructures of this interface significantly influence the mechanical characteristics of the composites, particularly their toughness. [6][7][8][9] In SiC f /SiC composites, interfaces have the capacity to hinder crack propagation, transmit loads from the matrix to the fibers, subsequently relieving residual thermal stresses, and offer protective measures during both the preparation and utilization phases. 10 Hence, the design of the interface is essential to obtain SiC f /SiC composites with further improved performance.…”

Section: Introductionmentioning

confidence: 99%

Fine study of hierarchical interphase constructed by boron nitride and carbon nanotubes in SiC_f/SiC composites

Yan,

Fan,

Huang

et al. 2023

Int J Applied Ceramic Tech

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A fine study of the interfacial part in the silicon carbide fiber (SiCf) reinforced silicon carbide (SiC) composites was conducted by transmission electron microscopy. The boron nitride (BN) and carbon nanotubes (CNTs) were progressively coated on the SiCf by chemical vapor deposition method to form a hierarchical structure. Three composites with different interfaces, SiCf–CNTs/SiC, SiCf@BN/SiC, and SiCf@BN–CNTs/SiC, were fabricated by polymer infiltration and pyrolysis method. The interfaces and microstructures of the three composites were carefully characterized to investigate the improvement mechanism of strength and toughness. The results showed that BN could protect the surface of SiCf from corrosion and oxidation so that improved the possibility of debonding and pullout. CNTs could avoid the propagation of cracks in the composites so that improved the damage resistance of the matrix. The synergistic reinforcement brought by BN and CNTs interfaces made the SiCf@BN–CNTs/SiC composites with a tensile fracture strength as high as 359 MPa, with an improvement of 23% compared to that of SiCf@BN/SiC.

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Characterization and Modeling Damage and Fracture of Prepreg-MI SiC/SiC Composites under Tensile Loading at Room Temperature

Cited by 19 publications

References 53 publications

Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

Eco-Friendly Preparation of Carbon-Bonded Carbon Fiber Based on Glucose-Polyacrylamide Hydrogel Derived Carbon as Binder

Fine study of hierarchical interphase constructed by boron nitride and carbon nanotubes in SiC_f/SiC composites

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Characterization and Modeling Damage and Fracture of Prepreg-MI SiC/SiC Composites under Tensile Loading at Room Temperature

Cited by 19 publications

References 53 publications

Phase‐field simulation of microscale crack propagation/deflection in SiCf/SiC composites with weak interphase

Phase‐field simulation of microscale crack propagation/deflection in SiCf/SiC composites with weak interphase

Eco-Friendly Preparation of Carbon-Bonded Carbon Fiber Based on Glucose-Polyacrylamide Hydrogel Derived Carbon as Binder

Fine study of hierarchical interphase constructed by boron nitride and carbon nanotubes in SiCf/SiC composites

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Resources

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Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

Phase‐field simulation of microscale crack propagation/deflection in SiC_f/SiC composites with weak interphase

Fine study of hierarchical interphase constructed by boron nitride and carbon nanotubes in SiC_f/SiC composites