STRENGTH EVALUATION OF T-JOINT STRUCTURES FOR THE COMPOSITE BOGIE FRAME UNDER BENDING

초록

In this study, the failure strength and modes of Tjoints used in a composite bogie frame has been evaluated under a bending load. The bending load is corresponding to a traction load applied to the cross beams of the composite bogie frame. The composite bogie frame is composed of two side beams and two cross beams [6-7]. In order to make the composite bogie frame, first, the two cross beams and the two side beams were assembled by adhesively bonded method. Then, GEP224 glass/epoxy prepregs were laid up on the surface of the assembled structure to form the skin. In this study, two types of T-joints were fabricated and tested. The first one is a T-joint in which a cross beam and a side beam are connected using only adhesive bonding method. The second one is a T-joint in which a cross beam and a side beam are assembled using adhesive bonding and skin layup.