Abstract
A model based on the concept of cracks bridged zone and thermo-fluctuation theory is used for analyzing the crack self-healing efficiency in composite materials. The crack self-healing process is treated as a crack bridged zone formation during bonds regeneration between crack faces. The bonds regeneration and the crack bridged zone formation are analyzed by the thermo-fluctuation kinetic theory. The crack self-healing time is dependent on the chemical reaction rate of the healing agent, the crack size, and the external loads. The decreasing of the stress intensity factors is used as the measure of self-healing effects. The model can be used for the evaluation of composite materials durability.
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