Abstract
The fracture experiments of the monofilament composite material system is applied to evaluate the interface shear strength of the composite materials for a long time. This paper is based on the polarizing microscope, establishing the online observation fracture experimental platform and analyzing the formation process of the fracture according to fracture injury patterns of the carbon monofiber resin matrix composite system in the fracture experiment. Secondly, this paper also describes the forming process of the fracture injury patterns, diamond damage fracture, V damage fracture and double V damage fracture. The experiment shows under the tensile load. Matrix of different mechanical properties is the main factor to affect the carbon fiber fracture morphology and the stress distribution representation. Finally, by employing the finite element software ABAQUS as computing platform, and with the help of the user-defined subroutine, the numerical analysis method of the fracture process in the monofilament composite system is put forward. From The Micro Perspective, this new method explains the internal damage mechanism of composite material, which is the result of different fiber directional properties of interface between fiber and matrix due to the different chemical reaction extent of the interface phase.
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