1405 硬化前吸湿が構造用接着剤の接着強度に及ぼす影響(OS14-2 締結・接合部のプロセスと信頼性評価-接着接合-)

概要

論文の詳細を見る
The effects of moisture absorption before curing on bonding strength of one-component epoxy structural adhesives were experimentally confirmed, and phenomena were discussed using finite element analysis. The lap shear strength was influenced by moisture absorption time before curing. Bubbles' area expanded from edge into central region of adhesive layer with moisture absorption time, and the lap shear strength moderately decreased with bubble's area increasing. From the result of fmite element analysis using simple joint model, it was found that the boding strength would be greatly influenced by the size of bubbles. In case that the ratio between bubbles' radius and a half thickness of adhesive layer is 0.45, it was assumed that lap shear strength drastically decreases because rapture occurs around bubbles. And in this situation, it was assumed that rapture occurs around bubbles despite the bubbles' location.
一般社団法人日本機械学会の論文
2010-10-09