A new temperature dependent fracture strength model for the ZrB2–SiC composites

Wang, Ruzhuan; Li, Weiguo; Li, Dingyu; Fang, Daining

doi:10.1016/j.jeurceramsoc.2015.03.025

Cited by 60 publications

(9 citation statements)

References 26 publications

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“…The material properties of the C/SiC composite are given by: V f = 0.3, r f = 3.5 µm, ξ d = 0.1 J/m 2 , η f = 0.002, η m = 0.001, and T 0 = 1000 • C, and the temperature-dependent constituent properties are given by [24][25][26][27][28]:…”

Section: Resultsmentioning

confidence: 99%

Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites

2020

Materials

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In this paper, the temperature-dependent vibration damping in C/SiC fiber-reinforced ceramic-matrix composites (CMCs) with different fiber preforms under different vibration frequencies is investigated. A micromechanical temperature-dependent vibration damping model is developed to establish the relationship between composite damping, material properties, internal damage mechanisms, and temperature. The effects of fiber volume, matrix crack spacing, and interface properties on temperature-dependent composite vibration damping of CMCs and interface damage are analyzed. The experimental temperature-dependent composite damping of 2D and 3D C/SiC composites is predicted for different loading frequencies. The damping of the C/SiC composite increases with temperature to the peak value and then decreases with temperature. When the vibration frequency increases from f = 1 to 10 Hz, the peak value of composite damping and corresponding temperature both decrease due to the decrease of interface debonding and slip range, and the damping of 2D C/SiC is much higher than that of 3D C/SiC at temperature range from room temperature to 400 °C. When the fiber volume and interface debonding energy increase, the peak value of composite damping and the corresponding temperature decreases, mainly attributed to the decrease of interface debonding and slip range.

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Section: Resultsmentioning

confidence: 99%

Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites

2020

Materials

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“…In fact, when the ambient temperature changes, it will affect the properties of the material, and we need to extend the relevant parameters to temperature dependence; in addition, the RTS can be released to some extent due to the inevitable inherent defects of the material and the inadequate fiber/matrix interface 10,24 . The true value of RTS is not as large as it calculated by Equation ().…”

Section: Theoretical Modelmentioning

confidence: 99%

On temperature‐dependent interfacial fracture energy/stress intensity factor and matrix cracking in ceramic composites

Gao

Zhang

et al. 2022

Int J Applied Ceramic Tech

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The first matrix cracking stress is a crucial indicator to appraise the mechanical properties of ceramic‐matrix composites, which is the starting point of permanent damage. Based on the classic energy balance method and stress intensity method, two temperature‐dependent first matrix cracking stress models of fiber‐reinforced ceramic matrix composites are established, respectively. The model established by the energy balance method considers the evolution of interfacial fracture energy with temperature, and the model established by the stress intensity method takes into account the evolution of stress intensity factor with temperature. The predictions of the above models in a wide temperature range are verified using experimental data available in the literature, which shows the rationality and accuracy of the above models. Moreover, on the basis of the energy balance method model, the main factors controlling the first matrix cracking stress at different temperatures are analyzed by the numbers. Finally, in view of the analysis results, some suggestions on how to optimize and enhance the first matrix cracking stress at different temperatures are put forward.

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“…The temperature-dependent fiber/matrix interface debonded energy of γ d (T ) and the matrix fracture energy of γ m (T ) can be described using the following equations. [31] (17) (18) where T o denotes the reference temperature; T m denotes the fabricated temperature; γ do and γ mo denote the interface debonded energy and matrix fracture energy at the reference temperature of T o ; and C P (T) can be described using the following equation. The effects of fiber volume fraction, interface shear stress, interface frictional coefficient, interface debonded energy and matrix fracture energy on the temperaturedependent proportional limit stress and interface debonded length are discussed.…”

Section: Theoreticalmentioning

confidence: 99%

Temperature-Dependent Proportional Limit Stress of Carbon Fiber-Reinforced Silicon Carbide Ceramic-Matrix Composites

Li¹

2019

Ceramics - Silikaty

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In this paper, the temperature-dependent proportional limit stress of carbon fiber-reinforced silicon carbide ceramic-matrix composites (C/SiC CMCs) is investigated using the energy balance approach. The temperature-dependent micromechanical parameters of fiber and matrix modulus, fiber/matrix interface shear stress and interface debonded energy, and matrix fracture energy are incorporated into the analysis of the micro stress analysis, fiber/matrix interface debonding criterion and energy balance approach. The relationships between the proportional limit stress, fiber/matrix interface debonding and temperature are established. The effects of fiber volume fraction, fiber/matrix interface shear stress, interface frictional coefficient, interface debonded energy and matrix fracture energy on the proportional limit stress and fiber/matrix interface debonding length versus temperature curves are discussed. The experimental proportional limit stress and fiber/matrix interface debonding length of 2D C/SiC composite at elevated temperatures of 973 K and 1273 K are predicted. For C/SiC composite, the proportional limit stress of C/SiC composite increases with temperature, due to the increasing of fiber/matrix interface shear stress and decreasing of the thermal residual stress.

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A new temperature dependent fracture strength model for the ZrB2–SiC composites

Cited by 60 publications

References 26 publications

Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites

Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites

On temperature‐dependent interfacial fracture energy/stress intensity factor and matrix cracking in ceramic composites

Temperature-Dependent Proportional Limit Stress of Carbon Fiber-Reinforced Silicon Carbide Ceramic-Matrix Composites

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