When the sample is at the stage of grindingdamage, the axial force and torque are related to the Young? S modulus, cohesion and internal friction Angle except the compression strength.
而处于研磨阶段时，轴向压力、扭矩和试样弹性模量、黏聚力及内摩擦角有关，与抗压强度无关。
2
It may decrease fatigue damage causing by rolling contact and side damage on track and prolong rail service life 0.5 ~ 1 time by means of grinding rail track.
The grinding processes of advanced ceramic material are studied by using indentation damage theory, and their influence on the finished surface and component properties is discussed.