Cranial bone surrogate and methods of manufacture thereof

A method of manufacturing a multilayered material, the method comprising:

• adhesively bonding a first fiber reinforced layer directly on a first surface of a foam layer;
• and
• adhesively bonding a second fiber reinforced layer directly on a second surface of the foam layer;
• wherein
• the first and second fiber reinforced layers comprise a crosslinked polymer and fibers
• the first and second surfaces of the foam layer are opposedly disposed to each other,
• the foam layer has a compressive strength of about 3.5 to about 4.5 MPa, when measured as per ASTM-D-1621-73, and a shear strength of 1.50 to about 2.15 MPa, when measured as per ASTM-C-273, and
• the fibers in the first fiber reinforced layer and in the second fiber reinforced layer are milled fibers uniformly dispersed within the crosslinked polymer.