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A High Pressure-Short Time Chromatography Using Analysis of Surface Deformation Patterns in Percussive Impact Indentation on Lubricated Surfaces

利用润滑表面冲击冲击压痕中的表面变形模式分析的高压短时色谱法

基本信息

批准号：
12650145
负责人：
OHNO Nobuyoshi
金额：
$ 2.18万
依托单位：
Saga University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650145/
关键词：
Trikbology Impact indentation Lubrication Traction oil Solidification Rhelogy High pressure Contact angle 国化

项目摘要

Succeeding the papers on free volume of lubricants at high pressure from liquid to solidified regions, the authors are observing dynamical high pressure phenomena under impact Here, lubricant films between solid surfaces, e.g., a bearing steel ball and a flat plate of low carbon steel, no more exhibit axi symmetric behavior as so far assumed a priori, but a variety of anisotropic patterns in circumferentially.The solidification under the dynamical condition is considered to occur depending on time, location and oil composition. At the moment of impact, primary segregation appears as granular deposition remaining a number of minute indentations superposed on principal indentation of its test plate. By analysis, the characteristic patterns of different interferential fringes different according to oil composition can be identified, together with measurement of the three dimensional profile of the mating plate. The unique performance of 5P4E ester is clarified by same means. Thus, the pre … More sent transient behavior of dynamical phenomena of solidification of lubricants develops wide applicability. It is noted that for such a rapid change in contact condition the interfacial phenomena plays a significant role on contact deformation.Summarizing the analysis of surface deformation pattern in percussive impact indentation on lubricated surfaces, the following conclusions are drawn.1. The central part of the dent was measured by fee interference fringe pattern. The axi-svmmetrical and unaxi-symmetrical patterns were observed. The axi-symmetrical pattern of fee dent was formed by homogeneous phase solidification of oil and fee unaxi-symmetrical pattern of fee dent was formed by dispersed phase of solidification of oil. And, fee annealed steel appears on this non symmetry more remarkably than fee hardened steel.2. The profile of the meridian sections of the dent was measured wife fee contact stylus surface roughness tester and fee effective radius of the dent was calculated. The effective radius of the dent was closely related to contact angle of oil. So, fee effective radius of dent was prescribed by fee interfacial phenomenon more remarkably than fee annealed steel.3. The precise analysis of fee dent shape is fee replica observation of fee transient phenomenon to pass in a short time, and it can examine fee solidification of oil under dynamic condition and a difference in fee interfacial phenomena. Less

继关于高压下从液体到凝固区域的润滑剂自由体积的论文之后，作者正在观察冲击下的动态高压现象。这里，固体表面（例如轴承钢球和低碳钢平板）之间的润滑剂膜不再表现出迄今为止假设的先验轴对称行为，而是在圆周上表现出各种各向异性模式。动态条件下的凝固认为发生取决于时间、地点和油的成分。在冲击瞬间，初级偏析表现为颗粒沉积，在其测试板的主压痕上留下许多微小压痕。通过分析，可以识别根据油成分不同的不同干涉条纹的特征图案，并测量配合板的三维轮廓。用同样的方法阐明了5P4E酯的独特性能。因此，润滑剂凝固动态现象的预发送瞬态行为具有广泛的适用性。值得注意的是，对于接触条件如此快速的变化，界面现象对接触变形起着重要作用。总结润滑表面冲击冲击压痕表面变形模式的分析，得出以下结论： 1．凹痕的中心部分通过费干涉条纹图案来测量。观察到轴对称和非轴对称图案。轴对称的凹痕图案是由油的均相凝固形成的，非轴对称的凹痕图案是由油的分散相凝固形成的。并且，高速退火钢比高速淬火钢在这种非对称性上表现得更显着。 2．用接触式表面粗糙度仪测量凹痕子午线截面的轮廓，计算凹痕的有效半径。凹痕的有效半径与油的接触角密切相关。因此，相对于退火钢，界面现象对凹痕有效半径的规定更为显着。 3．凹痕形状的精确分析是对短时间内经过的瞬态现象的复制观察，可以考察动态条件下油品的凝固情况以及界面现象的差异。较少的