relative wear

The experimental research on absolute and relative wear of impregnated diamond bit

关于金刚石钻头绝对磨损和相对磨损的试验研究

In the other hand, the wear of tool was analyzed. The relative volume attrition rate of tool in the initial wear stage and normal wear stage was achieved and then the empirical formula was launched to calculate the axial wear of tools.

然后分析了刀具磨损规律，得到了刀具在初期磨损阶段和正常磨损阶段的相对体积损耗率，并推出了计算刀具轴向损耗量的经验公式。

Wear rate of Si_3N_4 ceramic rose with the increase of loads between Si_3N_4 ceramic and chilled iron while the effect of relative sliding speed on wear rate of Si_3N_4 ceramic is not as significant as that of load.

Si3N4陶瓷的磨损率随载荷的增大而增大，滑动速度对磨损率的影响要小于载荷对其的影响；

The relative density of the composites is the main factor of influencing the wear rate. The composites with high density can remain relatively low wear rate of ( 0.5~ 2.1)× 10-3 mm3/ m under the experimental conditions.

复合材料相对密度对磨损率的影响较大，接近理论密度的复合材料在本研究试验条件下能保持较低的磨损率，最低可达到0.5×10-3~2.1×10-3mm3/m。

The relative sliding ratio formulas of an involute spur gear pair are developed The influences of relative sliding ratio on the gear wear, friction moment of engagement and elastohydrodynamic lubrication are analyzed

推导了渐开线圆柱齿轮副相对滑动率的计算公式，分析了相对滑动率对齿轮磨损、相啮合的摩擦力矩与弹流润滑等问题的影响

With the energy analysis to wavelet packet frequency bands, the feature of relative energy of frequency bands can be extracted accurately, which provides the diagnosis of crank bearing wear fault with quantitative foundation.

利用小波包频带能量分析法实现了对信号各频带相对能量信息特征的准确提取，为曲柄轴承磨损故障的识别提供了定量的依据。