A finite fracture model for the analysis of multi-cracking in woven ceramic matrix composites

Li, J.; Martín, E.; Leguillon, Dominique; Dupin, C.

doi:10.1016/j.compositesb.2017.11.050

Cited by 16 publications

(3 citation statements)

References 65 publications

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“…For a two-dimensional (2D) plain-woven (PW) SiC/SiC composite, the existence of transverse yarns and woven structure leads to the complex evolution of matrix cracking. 11,23,24 Five matrix cracking modes in the longitudinal and transverse yarns occur in 2D PW CMCs under tensile loading. 25 The effect of different matrix cracking modes on monotonic tensile or tension-tension fatigue behavior in 2D PW SiC/SiC composites was analyzed.…”

Section: Introductionmentioning

confidence: 99%

An approach to estimate crack opening displacement in two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite considering different matrix cracking modes

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Understanding of cracking opening behavior is important for the prediction of residual strength and lifetime of silicon carbide fiber-reinforced silicon carbide ceramic–matrix composites at elevated temperatures. Under tensile loading below the proportional limit stress, multiple matrix cracking modes in the longitudinal and transverse yarns of a two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite appear in the matrix with debonding at the fiber/matrix interface. Crack opening displacement is a key parameter to characterize the crack opening behavior in silicon carbide fiber-reinforced silicon carbide composites and is affected by the multiple matrix cracking modes. In this article, a damage-based micromechanical crack opening displacement model for two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composites is developed considering different matrix cracking modes. Two typical matrix cracking modes in a two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite, that is, cracking mode III with cracking in the matrix of the longitudinal and transverse yarns and cracking mode V with cracking only in the matrix of the longitudinal yarns, are considered. Micro stress field in the fiber, matrix of the longitudinal yarns, and transverse yarns are obtained. The crack opening displacement and related damage parameters are determined. Relationships between composite's crack opening displacement, constitutive properties, woven parameters, and damage state are established. Experimental crack opening displacements of cracking modes III and V in a two-dimensional plain-woven melt-infiltration silicon carbide fiber-reinforced silicon carbide composite from the published literature are predicted. For cracking mode III with partial interface debonding, the crack opening displacement increased nonlinearly with applied stress; and for cracking mode V with complete interface debonding, the crack opening displacement increased linearly with applied stress.

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Section: Introductionmentioning

confidence: 99%

An approach to estimate crack opening displacement in two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite considering different matrix cracking modes

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…During the last two decades, many analytical and numerical models have been developed to predict the mechanical properties and failure behavior of woven composites 29–31 . Li et al 32 used a finite element (FE) failure model to study the formation of multiple cracks in a ceramic woven composite based on a criterion that the couples stress and energy conditions to predict the initiation and the propagation of cracks within the framework of finite fracture mechanics. Doitrand et al 33 studied the mechanical behavior of a four‐layer plain woven composite in a mesoscale numerical model using a stress‐based failure criterion to determine the location of the cracks, and eventually, they observed that the numerical crack paths were rather similar to those observed experimentally.…”

Section: Introductionmentioning

confidence: 99%

In situ strength analysis of cross‐ply composite laminates containing defects and interleaved woven layer using a computational micromechanics approach

Rafie

Madadi

Farrokhabadi

et al. 2021

Fatigue Fract Eng Mat Struct

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The transverse strength of 90° plies located in cross‐ply laminates subjected to transverse tension is investigated numerically. To reach this aim, it is assumed that the transverse cracking is formed by coalescence of fiber–matrix debonding, which propagates along the planes parallel to the fibers. The two‐dimensional finite element model (FEM) investigates the dominant micromechanical damage mechanisms, fiber–matrix debonding, and matrix cracking using the cohesive zone model (CZM) and plasticity, respectively. The numerical simulation is according to the extended computational micromechanics (ECMM) approach, which can be applied as a useful virtual test method instead of performing costly characterization tests. The results obtained from the present study show that the defects such as voids, imperfections, and residual stresses contribute to reducing the in situ strength of 90° plies. In the case of using an interleaved woven layer, the formation of the first transverse crack in unit cells within 90° layer is delayed.

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“…Ceramic matrix composites (CMCs), such as SiC/SiC composites, have the advantages of high specific strength and stiffness, oxidation resistance, as well as excellent mechanical properties at high temperatures. Therefore, it is one of the most potential materials for the hot section components of an aero-engine [1][2][3][4][5]. Under the service conditions of an aero-engine, CMCs components suffer high-temperature, gas erosion, and complex stress state.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stress Analysis of Environmental Barrier Coatings Considering Interfacial Roughness

Fang

Ren

Shi³

et al. 2020

Coatings

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A numerical analysis of the effect of roughness interface on the thermal stress in the environmental barrier coatings for ceramic matrix composites was performed. Based on the concept of representative volume elements, a micromechanical finite element model of the coated composites was established. The rough interfaces between the coating layers were described using sine curves. The cooling process after preparation and the typical service conditions for the CMCs component were simulated, respectively. The results show that the rough interface has little effect on the temperature distribution along the depth direction for the studied T/EBC coatings for SiC/SiC composites. The stress concentration occurs at the rough EBC/BC interface, which is prone to cause delamination cracking. Under typical service conditions, the high temperature can eliminate part of the thermal residual stress. Meanwhile, the thermal gradient will cause large thermal stress in the TBC layer and the stress will result in surface cracks. The stress concentrations appear at the peaks and valleys of rough interfaces. The variation range of thermal stress increases with the roughness amplitude and decreases with the wavelength.

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A finite fracture model for the analysis of multi-cracking in woven ceramic matrix composites

Cited by 16 publications

References 65 publications

An approach to estimate crack opening displacement in two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite considering different matrix cracking modes

An approach to estimate crack opening displacement in two-dimensional plain-woven silicon carbide fiber-reinforced silicon carbide composite considering different matrix cracking modes

In situ strength analysis of cross‐ply composite laminates containing defects and interleaved woven layer using a computational micromechanics approach

Thermal Stress Analysis of Environmental Barrier Coatings Considering Interfacial Roughness

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