Abstract: Radius fillers are indispensible part of filling material used in triangle area of composite beam and rib structure. To optimize manufacturing process, improve quality and enhance automatic level, the process study of material configuration, molding temperature and material filling quantity have been done to explore the influence of different process on quality of radius filler. The results show that the radius filler is of size stability and good appearance quality when the material filling quantity is 102%, molding temperature is 100 ℃, the material configuration is 6.35 mm×6 ply. Automated fiber placement and pultrusion process should be used to produce the radius filler of omega stringer reinforced panel. The skin and stringer can be assembled very well when the optimized process is used, and the triangle area of panel is smooth and of high quality.

Key words: composite, radius fillers, pultrusion