Analysis of the stresses intensity factor in alumina–Pyrex composites

Souad, Sellam; Sérier, B.; Bouafia, Farida; Bouidjra, Bel Abbes Bachir; Hayat, Sardar Sikandar

doi:10.1016/j.commatsci.2013.01.030

Cited by 9 publications

(8 citation statements)

References 21 publications

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“…And the ultimate tensile strain of sandstone is larger, resulting in that the sandstone is not completely destroyed when the SFC reaches the peak stress. In the post‐peak stage, the haphazardly distributed fibers penetrate the micro‐cracks and bond to the matrix in the surrounding area, which reduces the stress intensity factor in the adjacent area under the drawing stress 44–46 . In consequence, the crack expansion rate is slowed down and the crack generation is reduced, and the structural load capacity is further maintained.…”

Section: Results and Analysismentioning

confidence: 99%

Dynamic splitting tensile behavior of rock–concrete bimaterial disc with multiple material types under different interface inclination angle

Chen

Feng

et al. 2022

Fatigue Fract Eng Mat Struct

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The experimental investigation on the dynamic mechanical properties and failure behavior of rock–concrete composite is of great significance for understanding the mechanical response of rock–shotcrete supporting structures. In the paper, impact splitting tests were performed on Brazilian disc specimens of the rock–concrete bimaterial with different interface inclination angles. Effects of interface inclination angle and material type on dynamic response and failure behavior under dynamic impact were analyzed experimentally. The results show that the dynamic splitting strength and energy dissipation ratio increase with the increase of interface inclination angle. However, the incorporation of fibers will reduce the splitting tensile strength. The crack‐resisting effect of sandstone–fiber concrete is more obvious, and the hysteresis plateau phenomenon appears in the post‐peak section of the stress‐time curve. The interface failure behavior is related to the stress state of the interface and can be divided into three patterns: tensile fracture, shear fracture, and interface non‐ fracture.

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Section: Results and Analysismentioning

confidence: 99%

Dynamic splitting tensile behavior of rock–concrete bimaterial disc with multiple material types under different interface inclination angle

Chen

Feng

et al. 2022

Fatigue Fract Eng Mat Struct

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“…As a result, residual stress appears at the fiber-matrix interface due to the difference of thermal expansion coefficients of these two constituents. Several studies as Sellam S. et al [21] have shown that the level and distribution of these stresses depended on the nature of the two components bonded together, the difference of physical properties (thermal expansion coefficient) and the temperature of junction (temperature of elaboration). The residual stresses generated during the implementation of the composite material during the cooling process of the elaboration temperature to room temperature, are introduced into the fiber, the matrix and the very close vicinity of their interface.…”

Section: Resultsmentioning

confidence: 99%

Effect of Residual Stresses on the Stress Intensity Factor of Cracks in a Metal Matrix Composite: Numerical Analysis

Ramdoum¹,

Bouafia²,

Sérier³

et al. 2018

Mechanics and Mechanical Engineering

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In this work, the finite element method was used to determine the stress intensity factors as a function of crack propagation in metal matrix composite structure, A three-dimensional numerical model was developed to analyze the effect of the residual stresses induced in the fiber and in the matrix during cooling from the elaboration temperature at room temperature on the behavior out of the composite. Added to commissioning constraints, these internal stresses can lead to interfacial decohesion (debonding) or damage the matrix. This study falls within this context and allows cracks behavioral analysis initiated in a metal matrix composite reinforced by unidirectional fibers in ceramic. To do this, a three-dimensional numerical model was analyzed by method of finite element (FEM). This analysis is made according to several parameters such as the size of the cracking defects, its propagation, its interaction with the interface, the volume fraction of the fibers (the fiber-fiber interdistance), orientation of the crack and the temperature.

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“…Relations (1), (2) and (3) show that for a given elaboration temperature, the difference between the thermal expansion coefficients of the two constituents of the composite (fiber and matrix) conditions the thermoelastic deformations and therefore the thermally induced stresses. In this part, the effect of this physical parameter on the behavior of matrix cracks is analyzed.…”

Section: Effect Of Physical Properties (Thermal Expansion Coefficient)mentioning

confidence: 99%

“…An experimental approach based on the peel-layer method makes it possible to deduce these residual stresses by measuring the moments and the induced curvatures, the residual stresses through the thickness estimated by this method are compared with those calculated from a thermoelastic model and a variational approach. Sellam and al [3], using the finite element method (FEM), they have analyzed the crack growth and their interaction with the defects. They show that, the propagation in modes I and II in the composites depends on the cracks location and the defects nature .Using the same method (FEM), Metehri and al [4] have shown that the level and distribution of residual stresses, in polymer matrices, are closely related to the fiber-matrix, fiber-fiber and fiber-interphase interaction.…”

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confidence: 99%

Finite element analysis of the thermomechanical behavior of metal matrix composites (MMC)

Baghdadi

Bouchra

Sérier

et al. 2019

Frattura Ed Integrità Strutturale

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In this work the finite element method (FEM) was used to analyze the mechanical behavior of the composite materials subjected to the mechanical loading. This behavior is studied in terms of stress intensity factor variation as a function of the applied stress intensity. The residual stresses induced in the composites, during the elaboration of these composites are taken into consideration in this study. The superimposition of these types of stresses (residuals and commissioning) is simulated here by thermomechanical stresses. The results obtained show that in the vicinity very close to the fibermatrix interface and under the effect of this loading type, the matrix cracks propagate in modes I, II and III, and far from the interface, in mode I. The propagation kinetics is slowed down by the interface-crack interaction. The effects of the crack size, the orientation and propagation of the crack, commissioning stresses, the elaboration temperature, fiber physical properties, matrix stiffness and thermomechanical stresses have been highlighted in this work.

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Analysis of the stresses intensity factor in alumina–Pyrex composites

Cited by 9 publications

References 21 publications

Dynamic splitting tensile behavior of rock–concrete bimaterial disc with multiple material types under different interface inclination angle

Dynamic splitting tensile behavior of rock–concrete bimaterial disc with multiple material types under different interface inclination angle

Effect of Residual Stresses on the Stress Intensity Factor of Cracks in a Metal Matrix Composite: Numerical Analysis

Finite element analysis of the thermomechanical behavior of metal matrix composites (MMC)

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