International Session (Structural Engineering)

[CS2-22] ENHANCEMENT OF FATIGUE DURABILITY IN CRUCIFORM WELDED JOINTS BY CARBON FIBER SHEETS USING VARTM TECHNIQUE

〇Visal Thay¹, Takumi Ozawa², Hitoshi Nakamura¹, Takahiro Matsui³ (1.Tokyo Metropolitan University, 2.Public Works Research Institute, 3.Toray Industries, Inc.)

Keywords:Fatigue durability, Cruciform welded joints, CF sheet, VaRTM technique, Stress concentration

Vacuum assisted Resin Transfer Molding (VaRTM) technique, a low-cost fabrication process widely used in mechanical engineering can adhere CF sheets to uneven surfaces with liquid resin. This paper deals with the enhancement of fatigue durability in typical non-load-carrying cruciform welded joints by CF sheets using VaRTM technique. In conclusion, the enhancement of fatigue strength by stress reduction and the prolongation of fatigue life in early stage of crack initaiton in non-load- carrying cruciform welded joints by CF sheets using VaRTM technique can be confirmed.