合成樹脂による鋼材溶接継手の疲れ強さ改善について

概要

論文の詳細を見る
It is well known that epoxy resin coating improves fatigue strength of welded joint. The reason of this improvement has been explained by one of authors as the protective effect of epoxy resin against oxygen and/or humidity in air, which decreased fatigue crack propagation rate. However, there is a report which attributes the fatigue strength improvement to the stress distribution of epoxy resion layer. This study was carried out to know whether the stress distribution of epoxy resin coating has beneficial effect ob the fatigue strength of welded joint. Mild steel and high strength welded joints which were coated by epoxy resin and glass fiber reinforced resin were tested under bending and axial load. The results obtained are as follows; 1) The fatigue strength of steel welded joint improves by epoxy and glass fiber reinforced resin coating under axial and bending loading conditions. 2) The reason of improving fatigue strength of steel welded joints by epoxy resin coating is caused by protective effect which was reported by one of the authors.
社団法人溶接学会の論文
1977-11-05