Failure and strength of 2D-C/SiC composite under in-plane shear loading at elevated temperatures

Yan, Kang; Zhang, Chengyu; Qiao, Shuqing; Li, M.; Han, Daoyang

doi:10.1016/j.matdes.2011.02.054

Cited by 24 publications

(4 citation statements)

References 9 publications

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“…It is well known that the failure caused by the interlaminar shear stress is mainly dominated by fibre/matrix interface bonding and matrix strength, 12–14,18 and also be confirmed in Fig. 2.…”

Section: Resultssupporting

confidence: 66%

Interlaminar shear fatigue of a two-dimensional carbon fibre reinforced silicon carbide composite

Zhang

Wang

Liu

et al. 2014

Advances in Applied Ceramics

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Interlaminar shear fatigue properties of a two-dimensional carbon fibre reinforced silicon carbide composite were investigated at room temperature (RT) and 900°C in air. The interlaminar shear strength (ILSS) of the survived specimens was determined to reveal the damage mechanisms. The composite presents excellent resistance to the fatigue at RT. The fatigue limits at 900°C are much lower than that at RT. Moreover, ILSS can be enhanced for the survived composite to some extent. The damage involves the matrix cracking and interfacial debonding. Such damage offers the channels for the oxidation of the pyrolytic carbon interface and carbon fibres, and leads to the decrease in the fatigue limits at 900°C.

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Section: Resultssupporting

confidence: 66%

Interlaminar shear fatigue of a two-dimensional carbon fibre reinforced silicon carbide composite

Zhang

Wang

Liu

et al. 2014

Advances in Applied Ceramics

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“…Numerous works have studied the fracture strength, toughness, and corresponding failure mechanism of C/SiC composites under quasi-static loading conditions [7][8][9][10]. Nevertheless, the mechanical properties of C/SiC composites under dynamic loading have not been adequately studied.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Tensile Behavior of Woven C/SiC Composite: Experiments and Strain-Rate-Dependent Yield Criterion

Zhang

Chen

et al. 2022

Materials

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This paper studies the yield behavior of a woven carbon-fiber-reinforced silicon-matrix (C/SiC) composite under dynamic tensile loading. Experiments were carried out to obtain the tensile properties of the C/SiC composite at a strain rate range of 2 × 10−5/s to 99.4/s. A strain-rate-dependent yield criterion based on the distortional strain energy density theory is established to describe the yield behavior. The interval uncertainty is considered for a more reliable yield prediction. Experimental results show that the yield stress, elastic modulus, and yield strain of the C/SiC composite grow with the increasing strain rate. The failure mode transitions from progressive crack extension to uneven fiber bundle breakage. The predicted results by the yield criterion match well with experimental data. Experimental results are enveloped within the uncertainty level of 45% in the critical distortional energy density, corresponding to an uncertainty of 14% and 11% in the yield stress and yield strain, respectively. With the support of the proposed strain-rate-dependent yield criterion, the yield behavior of the C/SiC composite under dynamic loading conditions can be predicted with reasonable accuracy.

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“…In recent years, various experimental methods such as tension [3][4][5][6], shear [7][8][9] and bending tests [10][11][12] have been developed to measure the fracture strength and fracture toughness of ceramic matrix composites. Tao et al found that the tensile strength of 2d-C/SiC composites decreased from 266 MPa at room temperature to 146 MPa at 1000°C [3].…”

Section: Introductionmentioning

confidence: 99%

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

Mao

Chen

et al. 2016

Materials Science and Engineering: A

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a b s t r a c tA high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600°C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300°C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/ SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.

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Failure and strength of 2D-C/SiC composite under in-plane shear loading at elevated temperatures

Cited by 24 publications

References 9 publications

Interlaminar shear fatigue of a two-dimensional carbon fibre reinforced silicon carbide composite

Interlaminar shear fatigue of a two-dimensional carbon fibre reinforced silicon carbide composite

Dynamic Tensile Behavior of Woven C/SiC Composite: Experiments and Strain-Rate-Dependent Yield Criterion

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

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