Materials, Tribotechnolgy and Surface Engineering
...Armor VII Ceramic Engineering and Science Proceedings. Hoboken, John Wiley & Sons. http://www.123library.org/book_details/?id=31718.
Medvedovsk, E. (2012). Ceramic Armor And Armor Systems Proceedings... Materials, Tribotechnolgy and Surface Engineering By Question K1c of ceramic zirconia, ZrO2= 7.5Mpa Polyethylene terephthalate K1c = 5Mpa
Polyamides value (Nylons, PA) is K1c = ( GcE)0.5= 2.05Mpa
Ceramic zirconia, ZrO2 K1c is larger than Polyethylene terephthalate (PET), Polyamides (Nylons, PA), or Polyethylene (PE).
K1c = ( GcE)0.5= 2.05Mpa
The toughness is smaller.
Polyethylene (PE), K1c = 4.5Mpa
Toughness G1c = (K1c)2 / E
G1c for Polyethylene = 50 J/m2, E= 0.8Gpa