The biological reaction to some zirconia ceramics, mainly tetragonal zirconia polycrystals (3Y-TZP), has been reported in the literature. Various forms have been used including bulk materials, ...

The elastoplastic response of polycrystalline metals and minerals above their brittleductile transition temperature is idealized here as rigid–perfectly plastic. Bounds on the overall plastic strength ...

We consider rigid perfectly plastic polycrystals in the two-dimensional anti-plane shear context. The yield sets of the grains are identified with rectangles in the plane centred at the origin whose ...