In situ observation of the deformation and fracture of an alumina-alumina ceramic-matrix composite at elevated temperature using x-ray computed tomography

Pirzada, Talha J.; Liu, Dong; Ell, Jon; Barnard, Harold; Šulák, Ivo; Galano, M.; Marrow, T J; Ritchie, Robert O.

doi:10.1016/j.jeurceramsoc.2021.01.030

Cited by 24 publications

(6 citation statements)

References 40 publications

(41 reference statements)

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“…9). Such debonding damage, also described as delamination, has been observed in an alumina-alumina ceramic-matrix composite [53],…”

Section: Discussionmentioning

confidence: 86%

“…Nonetheless, the analysis allow the effect of mechanical damage on the specimen compliance to be monitored through its effect on curvature. This method has been applied successfully in flexural tests of polymer composites [52], C/C-SiC composites [46], and alumina-alumina composites [53]. Moreover, this approach, which provided data also on the position of the neutral axis, has potential use as a means to verify numerical simulations of damage development.…”

Section: Discussionmentioning

confidence: 99%

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In situ investigation of failure in 3D braided SiCf/SiC composites under flexural loading

Liu

Chen

Shi

et al. 2021

Composite Structures

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“…9). Such debonding damage, also described as delamination, has been observed in an alumina-alumina ceramic-matrix composite [53],…”

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

In situ investigation of failure in 3D braided SiCf/SiC composites under flexural loading

Liu

Chen

Shi

et al. 2021

Composite Structures

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“…Additionally, the density of the samples is presented in Figure S2 (ESI), due to the same preparation method, the density of the material is similar in the range of 2.62-2.89 g/cm 3 .…”

Section: Structure and Morphologymentioning

confidence: 90%

“…As the aeronautics and space industries develop dramatically fast, a surging number of rigorous demands are imposed on the thermal stability of structural materials [1][2][3][4]. A major requirement of these areas is to develop high temperature materials that combine enhanced strength with high thermal conductivity and low coefficient of thermal expansion [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductive Networks Constructed by Sialon Fibers in-Situ Synthesized in Barium Aluminosilicate Glass-Ceramic

Sun

Wang

Zhou

et al. 2021

Preprint

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The application of ceramic materials is limited due to the complicated preparation process and intrinsic brittleness. In this work, a pressureless manufacturing route that enables the formation of barium aluminosilicate (BAS) glass-ceramic consisting of internal β-Sialon fibers with enhanced thermal conductivity is developed. By adjusting the carbon source content, composites with different Sialon contents can be easily fabricated. The thermal conductivity of the sample with 3.5 wt.% is improved to 5.845 W/m ∙ K with the Sialon content of 26 wt.% in the composite, which is 112.64 % higher than that of the pure BAS matrix. The theoretical models suggest that the enhanced thermal conductivity is mainly ascribed to the thermal conduction network constructed by Sialon fibers. This work provides a method with industrial application prosperity to fabricate the high temperature ceramic matrix composite of different sizes and complex shapes.

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“…This suggests that these cracks may initiate due to the compression loading of the fiber bundles. 59 They then propagate by splitting along the bundle interfaces. It is evident that these changes are related to damage processes that alter the material microstructure and its global response.…”

Section: Porosity Characterizationmentioning

confidence: 99%

Effect of high temperature on mechanical properties and porosity of carbon fiber/epoxy composites

Wen

Hou

et al. 2022

Journal of Reinforced Plastics and Composites

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In this study, the mechanical behavior and porosity of a T700/epoxy composite material under high temperature conditions were investigated. The 0°/90° compression, tensile, interlaminar, and in-plane shear experiments of composite samples were performed at temperatures from 23°C to 170°C. The true strain–stress curves of composite samples were obtained. The cross section and fracture regions of the tested samples were analyzed by Scanning Electron Microscopy and X-ray tomography to understand the microstructure property relationships. It was observed that the mechanical performance of carbon fiber/epoxy composites generally decreased with increasing temperature. By comparing the fracture morphology, it was found that the fracture mechanism of the composites changed from interfacial debonding to matrix failure with increasing temperature. Three-dimensional visualization of porosities after mechanical experiments under high temperature conditions was reconstituted from X-ray tomography scan images. The results showed that the porosity fraction of the tested samples under high temperature conditions was generally higher than that under lower temperature conditions. Moreover, for the 90° tensile test, the diameter of the pores was mainly located at 4–12 μm and was almost constant along different distances to the failure edge. Meanwhile, compared with the tensile test, larger size of pores in samples of 90° compression tests were observed.

show abstract

In situ observation of the deformation and fracture of an alumina-alumina ceramic-matrix composite at elevated temperature using x-ray computed tomography

Cited by 24 publications

References 40 publications

In situ investigation of failure in 3D braided SiCf/SiC composites under flexural loading

In situ investigation of failure in 3D braided SiCf/SiC composites under flexural loading

Thermal Conductive Networks Constructed by Sialon Fibers in-Situ Synthesized in Barium Aluminosilicate Glass-Ceramic

Effect of high temperature on mechanical properties and porosity of carbon fiber/epoxy composites

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