초록

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Abstract ▼ AI-Helper

Using blind hole drilling method the residual stresses and welding deflections are measured for the cylindrical shell with various heat inputs and cylinder diameters. As a result, it is verified that the axial and hoop residual stresses which are generated near the weld part of cylinders are increas...

Using blind hole drilling method the residual stresses and welding deflections are measured for the cylindrical shell with various heat inputs and cylinder diameters. As a result, it is verified that the axial and hoop residual stresses which are generated near the weld part of cylinders are increased, as the heat inputs and cylinder diameters are increased. And experimental results show good agreements with those of precedent researchers. In this paper, it is validated that dominant parameters, heat input Q and the dimension of cylinder h/D have some effects on the magnitude and distribution of axial and hoop residual stresses and welding deflections. The empirical equations of residual stresses and welding deflections are made by using multiple linear regression with experimental results.