Processing and characterization of ultra-high temperature ceramic matrix composites via water based slurry impregnation and polymer infiltration and pyrolysis

Servadei, Francesca; Zoli, Luca; Galizia, Pietro; Piancastelli, Andreana; Sciti, Diletta

doi:10.1016/j.ceramint.2022.09.100

Cited by 11 publications

(2 citation statements)

References 34 publications

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“…Ceramic Matrix Composite (CMC) has exceptional properties, such as high-temperature resistance [2], and the toughened fibers in CMC materials greatly improve the overall mechanical properties of the material, making its practical engineering application under high thermal load and high mechanical load possible. Among them, the three-dimensional braided composite yarn bundle extends in multiple directions in space and interweaves with each other to form an overall network structure, which fundamentally overcomes the fatal weakness of low interlayer strength and easy delamination of laminated composites, while CMC materials have superior mechanical and physical properties such as oxidation resistance, ablation resistance, thermal shock resistance, insensitivity to cracks, and no catastrophic damage [3][4], and are gradually applied to high-temperature parts of aero-engines [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the film cooling performance of ceramic matrix composites plate with different braided structures

Zhu,

Tu,

Mao

et al. 2024

J. Phys.: Conf. Ser.

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The ceramic matrix composite (CMC) materials have been gradually applied in the high temperature components, due to its excellent heat resistance and mechanical performance. The CMC component still need cooling to protect its safe operation in the high temperature environment of aero engine, such as film cooling structure. This study focuses on the influence of braided structure on the film cooling effect over a three-dimensional braided CMC plate. The full-size calculation model reflecting the internal mesoscale structure of CMC plate was established. The thermal properties of fibers and matrix are also introduced in mesoscale. The geometric parameter which is braided angle of braided structure is changed in different models, to analyze its impacts on the comprehensive film cooling effect. The results show that the fiber bundles inside the CMC plate are the main heat transfer channel, due to its relatively higher thermal conductivity. The different braided angles affect the anisotropic thermal conductivity of CMC on the three main directions. There exists an optimal braided angle near 40° that maximizes the heat dissipation effect in the region near the film cooling holes. While in the downstream region away from holes, the influence of braided angle is weak.

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Section: Introductionmentioning

confidence: 99%

Investigation of the film cooling performance of ceramic matrix composites plate with different braided structures

Zhu,

Tu,

Mao

et al. 2024

J. Phys.: Conf. Ser.

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“…The slurry infiltration process effectively reinforces the fibrous matrix, resulting in improved structural integrity and enhanced resistance to post-fire distress, such as cracking and spalling. This innovative application of SIFCON as a strengthening material after fire damage holds great potential for the development of resilient and durable infrastructure [13]. Ongoing research and advancements in this area continue to contribute to the evolution of fire-damaged concrete repair and rehabilitation methodologies.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Fire-damaged RC Beams After Strengthening with Various Techniques

Elsheikh,

Alzamili

2024

Civ Eng J

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High temperatures during a fire can significantly degrade the structural capacity of concrete. However, in many cases, it is possible to restore and strengthen fire-damaged concrete rather than completely rebuild damaged structures. The study considered two types of concrete (normal 25 MPa and high-strength 65 MPa) with two types of strengthening techniques: carbon-fiber-reinforced polymers (CFRP) sheets with different thicknesses of 1.5 and 2.5 mm and slurry-infiltrated fibrous concrete (SIFCON) jacketing with different fiber sizes of 20 and 30 mm. The numerical simulations and analyses were conducted to capture the complex behavior of fire-damaged concrete members (beams). A fire-damaged concrete beam subjected to an extreme or critical fire Exposure time (2 hours) was evaluated and modified using a finite element simulation approach. The simulation process included three stages: the first, subjecting the concrete beam to thermal loading; the second, reflecting the fire distribution map to another model of applying mechanical loading; and the third, involving the application of strengthening to the damaged model. The results showed that the strengthening using CFRP with a thickness of 2.5 improved the load-carrying capacity compared with SIFCON in both types of concrete. 200% improvement for the normal-strength concrete beam and a 136% improvement for the high-strength concrete beam, compared to the damaged beams. Doi: 10.28991/CEJ-2024-010-01-012 Full Text: PDF

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Study on removal mechanism and surface quality in helical grinding 2.5D-Cf/SiC composites

Zhou,

Chen,

Liu

et al. 2024

Int J Adv Manuf Technol

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Processing and characterization of ultra-high temperature ceramic matrix composites via water based slurry impregnation and polymer infiltration and pyrolysis

Cited by 11 publications

References 34 publications

Investigation of the film cooling performance of ceramic matrix composites plate with different braided structures

Investigation of the film cooling performance of ceramic matrix composites plate with different braided structures

Behavior of Fire-damaged RC Beams After Strengthening with Various Techniques

Study on removal mechanism and surface quality in helical grinding 2.5D-Cf/SiC composites

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