Figure 3: Result of deformation test for initially intact Inada granite (G01) at MPa, MPa. (a) Differential stress and displacement. (b) Volume change of the specimen obtained from the average of the strain measurements at four positions, dilatancy, pore fluid pressures, and water volume. (c) Streaming potential (SP) and pore-fluid pressure difference between bottom and top faces of the specimen. (d) Axial stress versus axial displacement. In this experiment, failure stress was 324 MPa and Young’s modulus was 32 MPa. (e) Volume change of the specimen and dilatancy versus the axial stress. The elastic deformation is indicated by the thick black line in this figure.