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Method for nondestructive damage sensing of carbon nanotube and nanofiber/epoxy composites using electro-micromechanical test and acoustic emission
Method for nondestructive damage sensing of carbon nanotube and nanofiber/epoxy composites using electro-micromechanical test and acoustic emission
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机译：碳纳米管和纳米纤维/环氧树脂复合材料无损检测的电子微机械测试和声发射方法
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摘要
The present invention is the breakdown of the short carbon fibers impregnated inside the conductive carbon nanocomposite material composed of carbon nanotubes (CNT) and nanofibers (CNF) reinforced epoxy composite using a change in electrical resistance and acoustic emission and the carbon nanocomposite material It is characterized by a method of non-destructively detecting and measuring its deformation.;In the present invention, the measurement by the electrical resistance change in the double matrix composite consisting of the inner base material and the pure epoxy outer base material impregnated with the short carbon fibers in the carbon nanocomposite material, the electrical resistance measurement on the carbon fiber An electrical contact is formed for the composite, and a tensile load is applied to the composite using a jig to break the fiber, and then the acoustic emission and the change in the electrical resistance of the internal base material are sensed and measured to impregnate the inside of the conductive carbon nanocomposite material. The fracture of the short carbon fibers and the deformation of the carbon nanocomposite itself are nondestructively detected and measured.;Electrical resistance measurement, carbon nanotube (CNT), nanofiber (CNF) reinforced epoxy composites, non-destructive damage detection, double-matrix composites (DMC) test method
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