Figure 1

Dimensions of the flat bilayered specimens. The black arrow on the porcelain indicates the location where the contact compressive load was applied, and the black arrow in the core indicates the location where the indentation was conducted.
Dimensions of the flat bilayered specimens. The black arrow on the porcelain indicates the location where the contact compressive load was applied, and the black arrow in the core indicates the location where the indentation was conducted.