圧子形状・寸法効果を利用したインデンテーション法による応力－ひずみ曲線推定法の検討

抄録

A new stress–strain curve estimation method was investigated through instrumented indentation technique using different sized and shaped indenters. For stress–strain curve estimation, the ball indentation technique was developed focusing on the effect of radius of ball indenter. Meanwhile, the pyramid indentation technique was developed focusing on the effect of included angle of pyramid indenter. The developed methods were applied to estimate stress-strain curve of rolled steel for welded structure. Then, advantages and limitations of the developed methods were discussed.