These are Image data for stress sensitivity of fractured carbonate. We designed a pressure cycling experiment to test the stress sensitivity of fractured carbonate. More experimental detail are shown in the paper 'Stress Sensitivity of Fractured and Vuggy Carbonate: an X-ray Computed Tomography Analysis'.
The image title up means loading the pressure, and down means unloading the pressure. The stress information also showed in the title in numbers: e.g. up10mpa means this is the image getting from upload pressure at 10 MPa.
