1967
DOI: 10.1115/1.3609740
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Identification of Potential Failure Nuclei in Rolling Contact Fatigue

Abstract: Nucleation points for contact fatigue failures in rolling bearings are identified. In cases where bearings are made from exceptionally clean steel, fatigue failures are frequently nucleated at minute surface imperfections. These have been classified as grinding furrows, pits, and dents. Regions of plastically deformed martensite are found in the vicinity of defects that are active or potential failure nuclei. Plastic deformation is also seen in the bulk material. The plastically deformed martensite is examined… Show more

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Cited by 49 publications
(11 citation statements)
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“…Bearing failure usually occurs when cyclic stresses generate a maximum shear stress at a subsurface location which causes the nucleation and growth of micro cracks that eventually result in flaking [3][4][5][6]. In extreme environments, contaminants (foreign particles) in the lubrication create dents on or peeling of the surface which later reduces the bearing life due to surface cracks.…”
Section: Introductionmentioning
confidence: 99%
“…Bearing failure usually occurs when cyclic stresses generate a maximum shear stress at a subsurface location which causes the nucleation and growth of micro cracks that eventually result in flaking [3][4][5][6]. In extreme environments, contaminants (foreign particles) in the lubrication create dents on or peeling of the surface which later reduces the bearing life due to surface cracks.…”
Section: Introductionmentioning
confidence: 99%
“…For the Crossland criterion, (9), which is the centre of the smallest hypersphere circumscribing the load path in the deviatoric space (more in [26]), and stress deviator at the generic instant ( ), must be evaluated. Now, it is possible to calculate (10) the amplitude of the square root of the second invariant of the deviatoric component of the stress tensor √ 2, .…”
Section: Crosslandmentioning
confidence: 99%
“…Publications [2][3][4][5] describe an analogy between the classic and the rolling contact fatigue, on the basis of which Multiaxial Fatigue Criteria (MFC) can be used for the RCF, even though they were originally derived for the classic fatigue. Crack due to rolling contact fatigue [6] Nowadays, it is well-known that due to stress raisers on the surface of bearing raceways, such as scratches, surfaces inclusions or other inhomogeneity, RCF cracks can initiate [7][8][9]. In this case, the failure is called micropitting.…”
Section: Introductionmentioning
confidence: 99%
“…Surface dents have been shown to modify significantly the formation of elastohydrodynamic lubricant films between rolling elements [12][13][14]. Several workers [11,15,16] have created artificial defects on contact surfaces and studied the effect these have on contact fatigue. Most studies are based on observation and analysis of failed specimens.…”
Section: Introductionmentioning
confidence: 99%
“…Surface roughness and the presence of surface defects is also known to be an important factor [10,11]. The as manufactured roughness affects fatigue life; in addition, surface damage may be caused during element manufacture, handling or during running.…”
Section: Introductionmentioning
confidence: 99%