Estimating and Evaluated Residual Stress Value by Indentation method in Ceramics : Influence of structure

In this study, ID method was applied for estimating the residual stress on ZrO_2 ceramics, which shows phase transformation by stress. The residual stress value obtained by ID method on ZrO_2 was close to the value by X-ray method, when the indentation load was 294N. For estimating the residual stress on ZrO_2 by ID method, the influence of the phase transformation by the indentation shall be added onto the original residual stress, when the indentation small. The influence became smaller when the indentation load was large. It was found that ID method is effective for estimating the residual stress on ZrO_2 ceramics, if the applied indentation load is between 294N and 490N.