診断・補修・補強 (2)

[I-145] Strengthening of Non-Load-Carrying Cruciform Welded Joints by Externally Bonded Carbon Fiber Sheets Using VaRTM Technique

*小沢 拓弥¹、タイ ウィサル¹、中村 一史¹、松井 孝洋² (1. 首都大学東京大学院、2. 東レ)

Keywords:cruciform welded joints, stress concentration, VaRTM, CF sheet, bonded joint

In this paper, 10 layers of CF sheets are externally bonded using VaRTM technique on non-load-carrying cruciform welded joints, and stress concentration at the weld toe is investigated. The validity of the experiment is examined with the FEM model which is simulated from the actual image of bead shape. As a result of comparing the values of stress concentration factor between experiment and FEM, it is confirmed that the experiment and FEM value are almost the same and the strengthen effect by CF sheet agrees with the theoretical value.