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通过试验测量与理论计算,分析了PTFE 青铜丝复合材料的磨损粗糙面高度特征参数的分析特点,获得该复合材料磨损粗糙表面的高度概率分布函数的峰态值一般大于3,低速时,该值随试验压力升高而增大;高速时,其磨损表面形貌特征主要受摩擦温度的影响。 相似文献
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油液污染度分析在船用柴油机状态监测中的应用 总被引：5，自引：0，他引：5
分析了对船用柴油机进行污染度检测与分析的可行性和必要性，以两条港口作业用拖船上的CumminsKTA—1150—M型柴油机为研究对象，进行了润滑油污染度检测，结合铁谱分析和光谱分析，指出实施润滑油污染度监测不仅可直观地了解机械设备在用润滑油时的污染状态，延长其换油周期，节约维修费用，而且还可对机械设备的磨损状态进行监测，可进行准在线测量． 相似文献
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The principal purpose of this paper is to investigate influence factors of fractal characterization of reciprocating sliding wear surfaces. The wear testing was completed to simulate the real running condition of the diesel engine 8NVD48A-2U. The test results of wear surface morphology dimension characterization show that wear surface profiles have statistical self-affine fractal characteristics. In general, there are no effects of the profilometer sampling spacing and sampling length and evaluation length on the fractal dimensions of the surfaces. However, if the evaluation length is too short, the structure function logarithm of the surface profile is scattered. The sampling length acting as a filter is an important part of the fractal dimension measurement. If the sampling length is too short, the evaluation of the fractal dimension will have a larger standard deviation. The continuous wavelet transform can be used to improve surface profile dimension characterization. 相似文献
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