CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A study has been made of Hertzian contact damage in compressive shear stress field beneath the contact area.1,2 The observed microcrack density increases with grain size,porous and dense liquid-phase-sintered aluminas. Indenta-tion stress–strain curves show increasing nonlinearity as the implying a threshold ...