Bend experiments of two kind of the C-shape frame

processed respectively by using RTM and autoclave forming have been carried out to investigate the influences of bearing capability and destroy mode. The results show that the bearing capability of the frame by autoclave forming is 27.5 percent higher than the frame by RTM

and the dispersivity of the bearing capability by autoclave forming is less than that by RTM. The position of destroy is the same

but the delamination of the outside on transition section from line section to bend section by using RTM occurs firstly

whereas the delamination by autoclave forming occurs until the outside destroyed. The conclusion is valuable for the engineering application of the circumferential frame.