Ablation behavior and damage mechanisms of carbon/boron-modified phenolic 2.5D woven composite

Dong, Fang; Wang, Xiaoxu; Zhang, Chao; Qian, Kun; Hong, Yan; Zhang, Diantang

doi:10.1016/j.polymdegradstab.2023.110279

Cited by 9 publications

(4 citation statements)

References 37 publications

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“…Combined with our previous work, 28 the damage forms of TCDP-30 and TCLP-30 include matrix fragmentation, matrix cracking, debonding, delamination, and fiber pullout. However, the matrix damage of TCDP-30 is more serious, and the damage forms are dominated by matrix fragmentation and matrix cracking.…”

Section: Comparison Of the Loaddisplacement Curves And Damage Morphologymentioning

confidence: 53%

“…The fabrics were first impregnated with boron-modified phenolic resins at 80% and 35% concentrations, respectively, using the RTM technique. Subsequently, based on our previous work, 28 different curing processes and heat treatment operations were adopted. Ultimately, carbon/phenolic 2.5D woven composites with dense matrix (CDP) and lightweight matrix carbon/ phenolic 2.5D woven composites (CLP) were produced.…”

Section: Preparation Of Specimensmentioning

confidence: 99%

“…In Equations (25)(26)(27)(28), F 1 t and F 2 t are the tensile strength of the impregnated fiber bundle along the longitudinal direction (the direction of the length of the fiber bundle) and the transverse direction (the plane perpendicular to the direction of the length of the fiber bundle), respectively; F 2 c is the compressive strength of the impregnated fiber bundle in the transverse direction; F m t is the tensile strength of the matrix; S 12 , S 13 , and S 23 are the shear strengths of the impregnated fiber bundle in the directions of 12, 13, and 23, respectively; and α is the coefficient of shear damage. Damaged versus undamaged tensor relationship equation:…”

Section: Damage Initiation and Damage Evolution Patternsmentioning

confidence: 99%

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Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Yang,

Dong,

Zhang

2023

Polymer Composites

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Abstract2.5D woven structures are of interest in new thermal protection systems for their excellent interlayer properties and structural stability. In this paper, dense (CDP) and lightweight (CLP) carbon/phenolic 2.5D woven composites were prepared. Quasi‐static tensile experiments were performed on the specimens before ablation (TCDP‐0, TCLP‐0) and after ablation for 30 s (TCDP‐30, TCLP‐30). A quarter macro–meso hybrid model that takes into account the degradation of material properties after ablation and ablative crack pores was innovatively proposed. The predicted tensile elastic modulus is within 9% error from the experimental results. The results show that TCDP‐30 and TCLP‐30 have rapid damage expansion and lethal injury at smaller displacements than the pre‐ablation specimens. The displacement of the maximum load point of TCDP‐30 is 38.7% lower than that of TCLP‐30. The forms of damage in TCDP‐30 are dominated by matrix fragmentation and matrix cracks. The damage forms of TCLP‐30 are dominated by debonding and delamination.Highlights Micro‐CT was used to collect matrix fabrication defects and ablative crack pores defect. A quarter macro–meso hybrid model that takes into account the degradation of material properties after ablation and ablative crack pore was innovatively proposed. The tensile failure mechanism of the material after ablation was revealed by the combination of experiment and numerical method.

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Section: Comparison Of the Loaddisplacement Curves And Damage Morphologymentioning

confidence: 53%

Section: Preparation Of Specimensmentioning

confidence: 99%

Section: Damage Initiation and Damage Evolution Patternsmentioning

confidence: 99%

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Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Yang,

Dong,

Zhang

2023

Polymer Composites

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“…The CDP had superior performance in terms of linear ablation resistance, but the CLP demonstrated a comparatively lower rate of mass ablation. The strength and modulus of CLP exceeded those of CDP [ 40 ].…”

Section: Carbon-phenolic Ablative Compositesmentioning

confidence: 99%

State-of-the-Art on Advancements in Carbon–Phenolic and Carbon–Elastomeric Ablatives

Kumar,

Ranjan,

Kumar

et al. 2024

Polymers

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Ablative composites serve as sacrificial materials, protecting underlying materials from high-temperature environments by endothermic reactions. These materials undergo various phenomena, including thermal degradation, pyrolysis, gas generation, char formation, erosion, gas flow, and different modes of heat transfer (such as conduction, convection, and radiation), all stemming from these endothermic reactions. These phenomena synergize to form a protective layer over the underlying materials. Carbon, with its superb mechanical properties and various available forms, is highlighted, alongside phenolics known for good adhesion and fabric ability and elastomers valued for flexibility and resilience. This study focuses on recent advancements in carbon-and-phenolic and carbon-and-elastomeric composites, considering factors such as erosion speed; high-temperature resistance; tensile, bending, and compressive strength; fiber–matrix interaction; and char formation. Various authors’ calculations regarding the percentage reduction in linear ablation rate (LAR) and mass ablation rate (MAR) are discussed. These analyses inform potential advancements in the field of carbon/phenolic and carbon/elastomeric ablative composites.

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Ablation behavior and high temperature ceramization mechanism of TiB2-B4C-ZrC modified carbon fiber/boron phenolic resin composites

Weng,

Deng,

Huang

et al. 2024

Ceramics International

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Ablation behavior and damage mechanisms of carbon/boron-modified phenolic 2.5D woven composite

Cited by 9 publications

References 37 publications

Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

State-of-the-Art on Advancements in Carbon–Phenolic and Carbon–Elastomeric Ablatives

Ablation behavior and high temperature ceramization mechanism of TiB2-B4C-ZrC modified carbon fiber/boron phenolic resin composites

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