The effects of vibration parameters on the surface roughness and the tool wear are analyzed. 研究了不同振动参数对工件表面粗糙度和刀具磨损量的影响规律。
The main friction area on the piston and cylinder is measured and compared, which proves that Ceramic-Mental FGM can decrease the friction and wear between the cylinder and piston. 试验比较结果显示，气缸体及活塞的主要接触面的磨损量很小，发动机功率下降不明显，这表明梯度功能材料在发动机上能够起较好的作用。
