Thermo-elastic properties in short fibre reinforced ultra-high temperature ceramic matrix composites: Characterisation and numerical assessment

Bianchi, Federico De; Ponnusami, Sathiskumar A.; Silvestroni, Laura; Grande, Antonio Mattia

doi:10.1016/j.mtcomm.2021.102754

Cited by 7 publications

(6 citation statements)

References 46 publications

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“…Despite the better alignment compared to that of the ball milling technique, the mechanical pressure application caused some fibre breakage and reduced the effective length from 3 to 1.5 mm (Fig. 5), still much longer compared to that of the milled fibre process (250-400 µm) [26]. These measurements were carried out on the longest fibres observed on the surface in order to qualitatively assess the minimum degree of the fibre damage which was around 50%.…”

Section: Morphologies and Microstructures Of Sintered Samplesmentioning

confidence: 99%

“…On the one hand, most of fibre-toughened ZrB 2 , which was fabricated with continuous carbon fibres, displayed good mechanical properties [21][22][23][24][25]. On the other hand, short fibre ZrB 2 composites are gaining more interest in industries, especially owing to their convenient manufacturing processes/low fabrication costs as well as their higher thermal shock resistance and lower densities [26][27][28][29]. In addition to this, the short fibres are easy to adapt to conventional and new manufacturing techniques [30].…”

Section: Introduction mentioning

confidence: 99%

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A novel approach for manufacturing of layered, ultra-refractory composites using pliable, short fibre-reinforced ceramic sheets

MOR¹,

Vinci²,

Failla³

et al. 2023

Journal of Advanced Ceramics

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A new additive technique for manufacturing of short fibre-reinforced ultra-refractory ceramics is presented. This technique allows the fabrication of solvent-free, thin (~100 µm), flexible, and easy-to-handle sheets suitable for fabricating homogeneous or layered structures. A large range of compositions, in terms of matrix and fibre volumetric contents, from 0% to 100% is possible. The amount of short carbon fibres incorporated in the sheets ranged from 20 to 50 vol%, whereas the fibre length ranged from 3 to 5 mm. The matrix composition investigated with this technique consisted of ZrB 2 /SiC/Y 2 O 3 . By increasing the fibre amount from 35 to 50 vol%, an improvement of mechanical properties was observed. Four-point flexural strength (σ) ranged from 107 to 140 MPa, depending on the amount of carbon fibres (C f ). The same holds true for the work of fracture, ranging from 108 to 253 J/m 2 . Functionally graded composites were fabricated by overlapping sheets with a fibre gradient (0%-50%).

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Section: Morphologies and Microstructures Of Sintered Samplesmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

A novel approach for manufacturing of layered, ultra-refractory composites using pliable, short fibre-reinforced ceramic sheets

MOR¹,

Vinci²,

Failla³

et al. 2023

Journal of Advanced Ceramics

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“…The basic variant of RSA assumes the irreversible addition of non-overlapping particles and absence of desorption and diffusion effects. For simple one-component systems, the saturation (jamming) coverages were estimated for disks φ ≈ 0.5471 [5][6][7], and many other shapes, like ellipses, rectangles, squares, discorectangles, needles and fibers, regular polygons and more complex shapes [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Competitive random sequential adsorption of binary mixtures of disks and discorectangles

Lebovka,

Cieśla,

Petrone

et al. 2024

J. Phys. A: Math. Theor.

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The two-dimensional (2D) packings of binary mixtures of disks with diameter $d$ and discorectangles with aspect ratio $\varepsilon$ (length-to-width ratio $\varepsilon=l/d$) were studied numerically. The competitive random sequential adsorption (RSA) with simultaneous deposition of particles was considered. The aspect ratio was changed within the range $\varepsilon=1-10$. In the competitive model, the particle was selected with probability $p_d$ (disks) and $p_\varepsilon = 1- p_d$ (discorectangles), and then they were placed sequentially on a solid surface without overlapping with previously placed particles. Behavior of the total coverage in jamming state $\varphi_T$ at different values of $p_d$ and $\varepsilon$ was analyzed. For core-shell structure of the particles the percolation connectivity of films was also discussed.

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“…24,25 Ceramic fiber utilizes glassy, polycrystalline, and single-crystallike materials in fiber form. [26][27][28][29] It possesses chemical resistance to acids and alkalis, ensuring chemical stability. With its ability to withstand temperatures up to 1800 degrees Celsius and exhibit low thermal conductivity at high temperatures, ceramic fiber finds applications in aerospace equipment.…”

Section: Introductionmentioning

confidence: 99%

“…Ceramic fiber is an emerging high‐insulation building material, known for its thermal resistance 24,25 . Ceramic fiber utilizes glassy, polycrystalline, and single‐crystal‐like materials in fiber form 26–29 . It possesses chemical resistance to acids and alkalis, ensuring chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Innovative sound absorption technique: Step‐shaped ceramic fiberboards with veneer attachment for walls

Kang,

Choi,

Zhu

et al. 2023

Int J Applied Ceramic Tech

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The subject of the present paper is improving sound absorption properties and protecting the dust generation of ceramic fiber boards. The two‐microphone impedance tube method measured the sound absorption coefficient (SAC) of ceramic fiberboards (CFB) with different shapes and sizes. The wood veneer was used to cover the ceramic fiberboard (VCFB) surface to improve the wall's appearance and prevent dust generation. The step‐shaped ceramic fiberboards with veneer attached (VCFBS) revealed improved SAC (0.98, 2000Hz) compared with CFB and VCFB. The noise reduction coefficient (NRC) and sound absorption average (SAA) showed a 100% improvement compared to CFB. The surface morphology and air permeability were analyzed using a scanning electron microscope and a capillary flow porometer to correlate with the findings. Furthermore, the porosity and pore diameter of the CFB were also studied to gain a comprehensive understanding of its acoustic properties and sound absorption capabilities. Statistical T‐tests revealed significant variations in the SAC (p ≤0.005). Besides, the obtained SAC was compared with other reported sound‐absorbing materials. These findings suggest that using step‐shaped ceramic fiberboard covered with a wood veneer can significantly absorb sound and improve the living environment. This novel approach offers potential advancements in sound‐absorbing materials for building construction.This article is protected by copyright. All rights reserved

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Thermo-elastic properties in short fibre reinforced ultra-high temperature ceramic matrix composites: Characterisation and numerical assessment

Cited by 7 publications

References 46 publications

A novel approach for manufacturing of layered, ultra-refractory composites using pliable, short fibre-reinforced ceramic sheets

A novel approach for manufacturing of layered, ultra-refractory composites using pliable, short fibre-reinforced ceramic sheets

Competitive random sequential adsorption of binary mixtures of disks and discorectangles

Innovative sound absorption technique: Step‐shaped ceramic fiberboards with veneer attachment for walls

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