Method for testing single fiber-resin interface strength of fiber composite material

The invention provides a method for testing the single fiber-resin interface strength of a fiber composite material, and the method comprises the following steps: 1, preparing an original sample, and cutting the original sample into sample slices; step 2, adhering the sample sheet to the bottom surface of the circular steel column; step 3, performing double-sided thinning, grinding and polishing on the sample sheet; step 4, placing the sample sheet on an adjustable nanoindentation instrument; step 5, obtaining the morphology of the surface of the sample sheet and positioning the position of the fiber by adjusting the nanoindenter; and step 6, calculating the shear strength of the single fiber-resin interface by adopting load-displacement data recorded by the nanoindentation. The method for testing the single fiber-resin interface strength of the fiber composite material can accurately characterize the interface performance of the fiber composite material and the structure of the fiber composite material on th