... 21 09 2009 failure (mechanical) fatigue rails railway engineering ultrasonic reflection ultrasonic transducer arrays wear wheels wheel-rail contact ultrasound measurement of contact area ultrasonic array The wear and fatigue of railway wheels and rails depends...

...-down situation 31 07 2007 18 02 2008 22 04 2008 ball bearings damping failure (mechanical) finite element analysis friction magnetic bearings rotors retainer bearing ball bearing model flexible rotor misalignment verification The area of active...

..., these monitoring techniques offer the potential to diagnose the failure mechanism and hence improve predictions of remaining life. Thus measurements of ultrasonic reflection coefficient can therefore be used in two ways. First, they can be used to monitor a gradual reduction in oil film. This might occur...

... to stirring oil is generated. direct lubrication tilting pad journal bearing static characteristics dynamic characteristics Rayleigh-step machine bearings lubrication failure (mechanical) vibrations 23 02 2004 19 08 2005 Vibration of the upper pads was investigated...

..., moving heat source and surface convection. thermoelasticity friction thermal expansion mechanical contact convection cooling wear failure (mechanical) One of the aspects of contact that affects performance, wear, and failure is surface heating. Surface heating is a common phenomenon...

... alloys tantalum alloys superalloys grinding adhesion surface morphology failure (mechanical) abrasives lubrication Wheel Loading Alloy Adhesion Deposition Mechanism Water-Based Grinding Fluids Cubic Boron Nitride (CBN) Electroplated Grinding Wheels Creep feed grinding...

... (Assoc. Ed.). 13 September 2003 18 March 2004 09 11 2004 polymers wear failure (mechanical) Monte Carlo methods sliding friction Engineered systems are subject to several modes of failure, including plastic deformation, fracture, fatigue, excess deflections, and wear...

... failure (mechanical) mechanical contact internal stresses fatigue cracks finite element analysis The two distinct rolling contact failure modes are called subsurface and near surface as described by Lorosch 1 , Bastias et al. 2 , Tallian 3 , and many other researchers. The subsurface...

... by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY . Manuscript received by the Tribology Division January 21, 2003 revised manuscript received July 10, 2003. Associate Editor: L. Chang. 21 January 2003 10 July 2003 19 04 2004 stainless steel seizure failure...

... oxidation failure (mechanical) fatigue testing prosthetics Ultra high molecular weight polyethylene (UHMWPE or polyethylene) has been employed as a bearing surface in total joint replacements since the 1960s. Typically, total joint arthroplasty involves replacing the problematic joint...

... as a powerful design tool to analyze the effects of various factors like shape of the contact surface and load histories on fretting. The calculations made using the stresses obtained from the above technique are consistent with the results of the experiments conducted in the laboratory. failure (mechanical...

... contact at the inception of sliding. Sliding inception is treated as a failure mechanism based on plastic yield rather than a Coulomb friction law with a certain friction coefficient. Two different failure modes are identified, either on the contact area or below it, depending on the elastic-plastic...

... turbomachinery by providing adequate means of support stiffness and viscous damping dissipation 1 . machine bearings liquid films lubrication rotation flow simulation turbulence failure (mechanical) wear 27 October 2002 18 February 2002 07 May 2002 19 03 2003...

... manuscript received June 18, 2002. Associate Editor: G. G. Adams. 27 October 2002 27 March 2002 18 June 2002 31 12 2002 thermoelasticity failure (mechanical) tribology mechanical contact stress effects Two-dimensional Fourier Transforms are applied to Eqs. ( 2 3...

.... 17 January 2001 29 January 2002 31 05 2002 machine bearings failure (mechanical) rolling friction motor drives alternators electric current Rolling-element Electric Current Failure Localized Current • uneven air gap and rotor eccentricity • split...

...: M. D. Bryant. 22 October 2001 01 February 2001 19 July 2001 mechanical contact rough surfaces lubrication failure (mechanical) tribology The demand for improving the surface quality of rolling bearings is to a large extent a result of the continuous improvement...

.... Mass flow rates, kg/s seals (stoppers) rotors failure (mechanical) mechanical contact tribology dynamics Mechanical face seal modes of failure are mostly well defined, e.g., face wear, cracking, blistering, thermal and mechanical warping, excessive leakage, etc...

... coatings fatigue cracks titanium compounds nitrogen compounds failure (mechanical) The useful lives of rolling bearings and gears are often limited by rolling contact fatigue (RCF) failures. The formation of RCF pits on surfaces subjected to cyclic contact loading can be caused either...

..., Redwood City, California. Anderson , A. E. , and Knapp , R. A. , 1990 , “ Hot Spotting in Automotive Friction Systems ,” Wear , 138 , pp. 319 – 337 . brakes clutches thermoelasticity modelling failure (mechanical) sliding friction aircraft railways The hot spotting...

...’ lifetimes by reducing wear associated with abrasive contamination (see Fisher and Donahue 2 ). However, an ultra-fine filter is susceptible to clogging and therefore requires frequent attention. machine bearings failure (mechanical) abrasion mechanical contact tribology 14 March 2000...