The Effect Of Electric Load On The Interface Of Carbon Fiber Composite

The electric-thermal effect was studied and performed on carbon fiber filaments and its composites. The paper studies and analyzes the characteristics and performance of their electric change.It explores the rule of the dc power for the carbon fiber monofilaments, using the carbon fiber filament’s temperature-sensitive to infer the temperature range of the interface of monofilament composite.It studies the influence of electric damage on the physical and chemical properties of the of carbon fibers’ surface. Then it researches on its impact on the interfacial shear stress using SFFT tests. It concluded that electro-thermal is not appeared a significant impact on the carbon fibers’ surface.Carbon fiber filament composite is(dog-bone shape specimen) directly energized, their interfacial shear strength was tested. Through the relationship between the shear strength and current intensity, morphology of breakpoint is observed. It finds that with the increase of the current intensity, interfacial shear strength has the trend that increases first and then decrease. And 6mA is best treatment for interfacial properties.Using linear relationship between carbon fiber filament’s resistance and its strain, calibrating the resistance sensitivity coefficient K of carbon fiber filament. Combined with the micro tensile test of carbon fiber/resin oblique cross model, the K value calculated fiber’s strain in specimens, compared to the strain of epoxy matrix, then it can give the interface load transfer efficiency. The results show that with the increase of the current intensity, strength of the interface transfer efficiency increases first then decreases. The transfer efficiency of interface appear maximum with 6mA current treatment.