Crack observation and subsurface stress evaluation in carburized steel (SCM415) using one-point rolling contact fatigue machine

2020 ◽  
Vol 2020.57 (0) ◽  
pp. K011
Author(s):  
Masato FUKUDA ◽  
Koshiro MIZOBE ◽  
Katsuyuki KIDA
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Stress Evaluation ◽  
Carburized Steel ◽  
Subsurface Stress

Subsurface Stress Distribution and Failure of PPS Thrust Bearings under Rolling Contact Fatigue in Water

2019 ◽  
Vol 814 ◽  
pp. 152-156 ◽  
Author(s):  
Xiao Chen Shi ◽  
Akihiro Adachi ◽  
Katsuyuki Kida
Keyword(s):  
Fatigue Crack ◽  
Stress Distribution ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Polymer Materials ◽  
Thrust Bearings ◽  
Subsurface Stress

In recent years, environments of bearings and polymer materials have been more and more attractive due to several advantages against ordinary metal material. However, there is still room for the further study about strength of polymer bearings. One of questions is the mechanism of fatigue crack propagation, which is the main cause of the damage of polymer bearings under rolling contact with lubricant, like water. In this study, subsurface stress distribution and failure of PPS thrust bearings under rolling contact fatigue in water are discussed to understand the detail of the crack propagation.

Observation of Subsurface Crack of Carburized Steel (SCM415) under Single-Ball Rolling Contact Fatigue over 107 Cycles

2019 ◽  
Vol 298 ◽  
pp. 19-23
Author(s):  
Masato Fukuda ◽  
Koshiro Mizobe ◽  
Katsuyuki Kida
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Subsurface Crack ◽  
Subsurface Cracks ◽  
Carburized Steel ◽  
Ball Rolling

Bearing fails due to the flaking failure which is caused by the subsurface cracks. The observation of the subsurface cracks is not easy beacause the cracks propagate inside the material. In order to observe the whole subsurface cracks, we performed rolling contact fatigue (RCF) tests of carburized SCM415 until over 107 cycles with the single-ball RCF machine. After the RCF tests, we directly observed the subsurface cracks.

scholarly journals Rolling Contact Fatigue in Carburized Steel (SCM415) and Crack Initiation Depth

2004 ◽  
Vol 53 (5) ◽  
pp. 487-492 ◽  
Author(s):  
Katsuyuki KIDA ◽  
Hiroyuki ASOU ◽  
Makoto SAITOU ◽  
Noriyasu OGUMA ◽  
Koshiro YAMAKAWA ◽  
...  
Keyword(s):  
Crack Initiation ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Carburized Steel

Effects of Texture Modification on Bearing RCF Life

2009 ◽  
Author(s):  
Young Sup Kang ◽  
Carl H. Hager ◽  
Dongbu Cao ◽  
Ryan D. Evans
Keyword(s):  
Surface Topography ◽  
Surface Texture ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Rolling Element Bearing ◽  
Texture Modification ◽  
Subsurface Stress ◽  
Stress States ◽  
Limiting Case

Highly localized tribological contacts can modify the surface texture of rolling element bearing surfaces. The evolution of the surface texture generates modified subsurface stress fields within the contact and subsequently may alter the bearing rolling contact fatigue (RCF) life. In this present study, relationships between bearing surface topography and subsurface stress states are examined for their effects on bearing RCF life in the limiting case of boundary or dry contact. Results show that seemingly minor changes to surface topography may influence the stress distribution enough to affect RCF life under heavily loaded conditions.

Rolling Contact Fatigue of Wheel and Rail

2012 ◽  
Vol 54 (5) ◽  
pp. 304-312
Author(s):  
Florian Dörner ◽  
Otto Kleiner ◽  
Christian Schindler ◽  
Peter Starke ◽  
Dietmar Eifler
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact
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