モアレ用耐熱格子の溶接継手高温変形挙動観察への応用

概要

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Application of the thermostable moire grating has been investigated for measuring the strain distribution of the welded joint deformed in high temperature. The thermostable moire grating, produced by electrochemical technique, could be successfully reproduced to the welded joint in HP (0.5C-25Cr-35Ni) steel and to the dissimilar-metal joint, 1 1/4Cr-1/2Mo steel to HK40 steel. The grating was stable even at a temperature of 900℃ in HP steel welded joint and 510℃ in dissimilar-metal joint under creep condition. Thermal expansion and the macroscopic creep deformation was measured by moire method and local creep deformation was by fine grating method. From these strain measurement, the characteristic of the creep deformation and the creep crack initiation was discussed.
社団法人溶接学会の論文
1980-05-05