Matrix Reinforcement Coefficients Models for Fracture Investigation of Orthotropic Materials

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Manafi Farid H.; FAKOOR M.

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:11 Page(s): 2811-2822

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Title

Matrix Reinforcement Coefficients Models for Fracture Investigation of Orthotropic Materials

Author(s)

Manafi Farid H. | FAKOOR M. | Issue Writer Certificate

Keywords

Fracture MechanicsQ2

Reinforced Isotropic SolidQ1

Reinforcement CoefficientsQ1

Fiber Volum RatioQ2

Orthotropic MaterialQ1

Abstract

In this paper, the new theory is proposed to investigate the fracture behavior of cracked composite materials. Based on this theory, crack is created and distributes in the isotropic matrix. Therefore, contrary to the previous fracture theories of composite materials presuming that crack growth occurs in anisotropic homogenous material, the new theory assumes that crack growth occurs in the isotropic matrix. It states that the isotropic matrix is affected by fibers in the composite structure of the material. In this approach, fibers are considered as isotropic matrix reinforcements and the reinforcement effects are defined as coefficients in stress state of the isotropic matrix. The coefficients are called reinforcement factors and derived via three different approaches to study the arbitrary crack in 2D materials. The reinforcing effects of fibers are obtained when tension across and along fibers and shear loadings exerted on the body. The three methods demonstrate that the reinforcement factors depend on elastic properties, crack growth location and the crack and fiber orientations. However, the method, derived from the micro-mechanic approach, displays their dependence on the fiber volume fraction. Comparing the results of these cofficients with the existing fracture theories illustrates the efficiency and ability of the reinforcement factors in investigation and explanation of the fracture behavior of Orthotropic Materials.

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APA: Copy

Manafi Farid, H., & FAKOOR, M.. (2019). Matrix Reinforcement Coefficients Models for Fracture Investigation of Orthotropic Materials. MODARES MECHANICAL ENGINEERING, 19(11 ), 2811-2822. SID. https://sid.ir/paper/178363/en

Vancouver: Copy

Manafi Farid H., FAKOOR M.. Matrix Reinforcement Coefficients Models for Fracture Investigation of Orthotropic Materials. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(11 ):2811-2822. Available from: https://sid.ir/paper/178363/en

IEEE: Copy

H. Manafi Farid, and M. FAKOOR, “Matrix Reinforcement Coefficients Models for Fracture Investigation of Orthotropic Materials,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 11 , pp. 2811–2822, 2019, [Online]. Available: https://sid.ir/paper/178363/en

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