Bending Experimental Study on Composite Single Hat Stiffener Panel in Different Environments

Hat stiffener is one of the main structural forms of composite stiffened panel. When the hat stiffener panel buckles to a certain extent, the skin and stiffener will bend and becomes debonding failure. In order to test the effect of environment and materials on the bearing capacity of the structure, three point bending test was carried out on composite single hat stiffener panel in three different environments. The effect of different materials and environments on the bearing capacity of the structure are obtained.