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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>A FRACTURE MECHANICS APPROACH TO ROLLING CONTACT FATIGUE</title>
      <link>https://trid.trb.org/View/145716</link>
      <description><![CDATA[Linear elastic fracture mechanics were used in the study of development of subsurface cracks in rolling contact fatigue.]]></description>
      <pubDate>Wed, 07 Nov 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/145716</guid>
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      <title>THE UNACCEPTABLE FACE OF LUBRICATING OIL ADDITIVES</title>
      <link>https://trid.trb.org/View/86897</link>
      <description><![CDATA[In order to extend the range of application of mineral lubricating oils, lubricant technologists attempt to enhance inherent oil properties by incorporating small amounts of additives.  While there is little doubt that they succeed in their primary objective, additives by their very nature tend to be more reactive than the oils in which they are incorporated and there is always the risk of unexpected side effects in their use.  This paper gives examples from industrial machines where lubricating oil additives have been responsible for serious lubrication problems and concludes that additives should only be used in situations where they are essential: full consideration should be given to possible harmful side effects.]]></description>
      <pubDate>Sat, 30 Jun 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/86897</guid>
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      <title>CYLINDER LINER WEAR IN LOW SPEED DIESEL ENGINES</title>
      <link>https://trid.trb.org/View/85431</link>
      <description><![CDATA[The findings of a long-term investigation of the wear of cylinder liners are discussed.  The actual liners examined were drawn from a wide range of those commented on by customers in the field.  The main objective is to present evidence about the wear mechanisms that appear to be associated with a whole spectrum of behaviour reported by engine operators.  Scuffing is generally accepted as the main reason for high wear rates, and a likely explanation for this is that as power outputs have increased, it has become increasingly difficult to maintain an adequate oil film between the piston and liner surfaces.  Under conditions of marginal lubrication, metal-to-metal contact occurs and the metallurgy of the surface becomes important. Order from BSRA as No. 49,822.]]></description>
      <pubDate>Wed, 28 Mar 1979 00:00:00 GMT</pubDate>
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      <title>PERCUSSIVE IMPACT WEAR: A STUDY OF REPETITIVELY IMPACTING SOLID COMPONENTS IN ENGINEERING</title>
      <link>https://trid.trb.org/View/79186</link>
      <description><![CDATA[Repetitive impacting of solid components in many industries pose severe wear problems limiting service life.  This paper describes the principal variables, testing methods, etc. and outlines a general engineering impact wear theory.]]></description>
      <pubDate>Wed, 27 Sep 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/79186</guid>
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      <title>INITIAL WEAR OF GEARS</title>
      <link>https://trid.trb.org/View/72303</link>
      <description><![CDATA[An experimental investigation of the running-in process of gears was made on a back-to-back test rig with hobbed and shaved gears of SIS 2216 steel working against SIS 2240, both quenched and tempered and at different speeds and loads.  Measurements of surface roughness and examination of surface replicas were used to study the running-in process. It was concluded that the process is completed in less than 0.3 x times 10 to the sixth power revolutions; and that the initial wear of the flanks is not large but increases with speed and applied load.  The increase is more marked with hobbed flanks.  It was also concluded that examination of surface replicas is useful for studying changes in tooth flanks, and may be used with advantage on gears in service.]]></description>
      <pubDate>Wed, 12 Apr 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/72303</guid>
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      <title>ASSESSING RUST PREVENTION IN LUBRICANTS</title>
      <link>https://trid.trb.org/View/72306</link>
      <description><![CDATA[The IP 135 standard test method, which is widely used to assess the corrosion-inhibiting properties of lubricating oils, suffers from a number of disadvantages, one of which is the large amount of oil needed.  This less frequently used Fed 791B method requires less oil but an take up to a week to yield results.  The Author, of the B.P. Research Centre, Sunbury, Middlesex, describes a new method which is free from these drawbacks.  It requires inexpensive equipment and small quantities of oil, and gives sensibly reproducible results within a one-day working period.  It has functioned satisfactorily with nine different corrosion inhibitors, and seems suitable for more general use in the assessment of corrosion of ferrous metals by water/oil mixtures.]]></description>
      <pubDate>Wed, 12 Apr 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/72306</guid>
    </item>
    <item>
      <title>TRIBOLOGY OF WHEEL ON RAIL</title>
      <link>https://trid.trb.org/View/72333</link>
      <description><![CDATA[The functioning of wheels and rails as a supporting and guiding system depends on a Hertzian contact of 0.2 in/in area.  In addition to its supporting function, this area must withstand tangential forces to enable the functions of traction, braking, and guidance to be fulfilled.  Such traction forces are accompanied by a deflection known as "creep" and classical estimates of this quantity are compared with measurements made on the track.  Modes of wear of wheel and rail are described and alternative systems which avoid contact are discussed.]]></description>
      <pubDate>Wed, 29 Mar 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/72333</guid>
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      <title>REMARKS ON THE WEAR OF A JOURNAL BEARING LUBRICATED BY A GREASE CONTAINING A POWERED PTFE ADDITIVE</title>
      <link>https://trid.trb.org/View/51819</link>
      <description><![CDATA[It is shown that the wear of a journal bearing lubricated by a grease containing a powered polytetrafluoroethylene (PTFE) additive is initially greater than the wear of the bearing lubricated by the grease without the PTFE additive, but the total wear of the bearing lubricated by the PTFE loaded grease is almost 2.8 times less than the wear on a similar bearing lubricated by the unloaded grease.  An explanation of this phenomenon is suggested.]]></description>
      <pubDate>Wed, 13 Apr 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/51819</guid>
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