Methods of forming a composite blade stiffener and facilitating the application of treatments for barely visible impact damage

摘要

A method for forming a flat composite charge (100) into a composite blade stiffener includes cutting a flat composite charge along a cut line (114) into a first piece (116) and a second piece (118) having an angle, positioning the first piece and the second piece of the flat composite charge on a forming mandrel about a tooling plunger (132), activating the tooling plunger to drive the first piece and the second piece into a cavity (134) of the forming mandrel resulting in the first piece and the second piece folding at the cut line, withdrawing the tooling plunger from the cavity of the forming mandrel, compressing the forming mandrel to apply a lateral pressure to the first piece and the second piece folded into the cavity, and applying a vertical pressure to a first flange (136) and a second flange (138) of the first piece and the second piece, respectively, to form the composite blade stiffener.