...Shengnan Zhang; Ming Yan; Yushi Wang A methodology is proposed to study the interplay between tooth wear and contact fatigue under elastohydrodynamic lubrication condition. The modeling methodology includes the influence of contact fatigue on wear and the influence of wear on contact fatigue. First...

...Oliver Menck Fatigue life calculation in bearings is an issue that has been the focus of decades of research culminating in national and international standards that are easily applicable to a wide variety of applications. However, almost all research has focused on simple, repetitive operating...

..., 2012; final manuscript received January 30, 2013; published online April 29, 2013. Assoc. Editor: Robert L. Jackson. 14 10 2012 30 01 2013 This paper presents the results of torsion fatigue of widely used bearing steels (through hardening with bainite, martensite heat treatments...

... pressure (Hertz solution) is often used as a control parameter for rolling contact fatigue analysis, whatever the geometry of the contact (point, elliptical, or line contact), the results presented here show that the effective contact pressure and subsequent residual strains are strongly dependent...

... originated fatigue is considered and fatigue life of rough and smooth surfaces is obtained which shows that fatigue life of rough solids is slightly shorter than of the smooth ones. In the general case of a contact region of rough surfaces with multiple connectivity subsurface originated fatigue possesses...

...Michael A. Klecka; Ghatu Subhash; Nagaraj K. Arakere Graded materials with high surface hardness and ductile cores are popularly used in high performance bearing applications to resist surface wear and fatigue damage. The gradient in hardness with depth is commonly determined using micro...

...Frédéric Lévesque; Sylvain Goudreau; Louis Cloutier Aeolian vibrations represent a threat to the integrity of electrical transmission lines. The fretting fatigue of conductors is thus a major concern. The modelization of the contact conditions at critical points is an important tool in assessing...

... plastic deformation, while ZrB 2 -containing composite coating involves only mild abrasive and fatigue wear when sliding against the GCr15 counterpart. 08 07 2010 05 11 2010 15 12 2010 15 12 2010 abrasion adhesion coatings crystal microstructure fatigue microhardness...

... of Contact Fatigue ,” NASA Special Report No. SP-237. Littmann , W. E. , and Widner , R. L. , 1966 , “ Propagation of Contact Fatigue From Surface and Sub-Surface Origins ,” ASME J. Basic Eng. 0021-9223 , 88 , pp. 624 – 636 . Tallian , T. E. , 1999 , Failure Atlas...

... morphology features revealed that the predominant erosion mechanism was fatigue failure, irrespective of the temperature. 10 12 2009 15 06 2010 10 09 2010 10 09 2010 aluminium fatigue particle size scanning electron microscopy wear wear testing Cavitation is defined...

...Arthur Francisco; Houssein Abbouchi; Bernard Villechaise Despite the numerous experimental works on rolling contact fatigue, dealing with two-disk contacts, some phenomena still remain badly understood. Most of the test benches, used for that purpose, impose the rotational speeds to the disks...

...Behrooz Jalalahmadi; Farshid Sadeghi It has been widely accepted that the microstructure of bearing materials can significantly affect their rolling contact fatigue (RCF) lives. Hence, microlevel topological features of materials will be of significant importance to RCF investigation. In order...

...Dong Zhu; Ning Ren; Q. Jane Wang Surface pitting due to contact fatigue is a major failure mode of many mechanical components, such as various gears and rolling-element bearings. Pitting life prediction, therefore, is vital to design and performance/reliability improvements. Conventional prediction...

... originated spalling has been recognized as one of the main modes of failure for rolling contact fatigue (RCF) of bearings. In the past few decades a significant number of investigators have attempted to determine the physical mechanisms involved in rolling contact fatigue of bearings and proposed models...

...R. S. Dwyer-Joyce; C. Yao; J. Zhang; R. Lewis; B. W. Drinkwater Failure of a wheel-rail contact is usually by wear or fatigue of either component. Both mechanisms depend on the state of stress, which in turn depends on size and location of the contact patch. In this work, the feasibility...

... in developing the erosion. Moreover, the feature morphology of eroded surfaces, and dislodged particles and their large sizes revealed that microjet-pits had a limited effect on erosion and that the predominant failure was a fatigue process. Hammitt , F. G. , 1980 , Cavitation and Multiphase Flow...

.... , 1998 , “ Aspects of Equivalence Between Contact Mechanics and Fracture Mechanics: Theoretical Connections and a Life-Prediction Methodology for Fretting Fatigue ,” Acta Mater. 1359-6454 , 46 , pp. 2955 – 2968 . 10.1016/S1359-6454(98)00011-1 Ciavarella , M. , 1998 , “ The Generalized...

...Behrooz Jalalahmadi; Farshid Sadeghi Microlevel material failure has been recognized as one of the main modes of failure for rolling contact fatigue (RCF) of bearing. Therefore, microlevel features of materials will be of significant importance to RCF investigation. At the microlevel, materials...

... lubrication mechanical contact rolling bearings indentation contamination pollution fatigue rolling bearing life Surface defects, especially indents, have been recognized as an important cause of premature rolling contact fatigue. Solid particles from oil contamination entering the contact...

...N. Govindarajan; R. Gnanamoorthy Fatigue properties of powder metallurgy parts are affected mainly by the porosity fraction. Even though it has inferior mechanical and physical properties over the conventional materials, the application of powder metallurgy products in automotive fields is seen...