A Physically Based Endurance Limit Model for Through Hardened and Surface Hardened Bearing Steels

2009 ◽  
pp. 459-459-15 ◽  
Author(s):  
A Vincent ◽  
R Fougères ◽  
G Lormand ◽  
G Dudragne ◽  
D Girodin
Keyword(s):  
Endurance Limit ◽  
Limit Model ◽  
Bearing Steels ◽  
Physically Based

A Physically Based Model for Endurance Limit of Bearing Steels

1998 ◽  
Vol 120 (3) ◽  
pp. 421-426 ◽  
Author(s):  
P. Lamagnere ◽  
R. Fougeres ◽  
G. Lormand ◽  
A. Vincent ◽  
D. Girodin ◽  
...  
Keyword(s):  
Endurance Limit ◽  
Damage Mechanism ◽  
Operating Conditions ◽  
Load Rating ◽  
Physically Based Model ◽  
Bearing Steels ◽  
Pure Rolling ◽  
Physically Based ◽  
Local Shear ◽  
Good Agreement

Available models are not suitable for calculating the load rating of bearings when an infinite life is required. This paper presents a new model that has been developed from a detailed analysis of the damage mechanism responsible for failure of bearings operating under EHD pure rolling conditions. It is based on the comparison between the local shear stress concentration built up around inhomogeneities present in steels and the microyield stress of the martensitic matrix. The predictions of this model are in good agreement with some literature data concerning the fatigue limit of bearing steels. Finally, the influence of material parameters and operating conditions on the endurance limit of bearings is investigated.

Influence of inclusion pairs, clusters and stringers on the lower bound of the endurance limit of bearing steels

2003 ◽  
Vol 36 (12) ◽  
pp. 921-928 ◽  
Author(s):  
J. Courbon ◽  
G. Lormand ◽  
G. Dudragne ◽  
P. Daguier ◽  
A. Vincent
Keyword(s):  
Lower Bound ◽  
Endurance Limit ◽  
Bearing Steels

Influence of Cementite Particle Size Distribution on Machinability and Tool Life of High Carbon Cr-bearing Steels

1998 ◽  
Vol 84 (5) ◽  
pp. 387-392 ◽  
Author(s):  
Takashi INOUE ◽  
Yuzo HOSOI ◽  
Koe NAKAJIMA ◽  
Hiroyuki TAKENAKA ◽  
Tomonori HANYUDA
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Tool Life ◽  
Cementite Particle ◽  
High Carbon ◽  
Bearing Steels

Bearing Steels for Induction Hardening – Part II

2016 ◽  
Vol 71 (5) ◽  
pp. 218-229 ◽  
Author(s):  
M. Wendel ◽  
F. Hoffmann ◽  
W. Datchary
Keyword(s):  
Induction Hardening ◽  
Bearing Steels

SANDVIK Ti-3Al-2.5V GRADE 9

Alloy Digest ◽  
1997 ◽  
Vol 46 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Endurance Limit ◽  
Weight Ratio ◽  
High Strength ◽  
Strain Ratio ◽  
Bend Strength ◽  
Aerospace Applications ◽  
Excellent Corrosion Resistance ◽  
Titanium Aluminum ◽  
Fatigue Endurance

Abstract Sandvik Ti-3Al-2.5V Grade 9 titanium-aluminum alloy offers excellent corrosion resistance, especially to chloride media, and has a high strength-to-weight ratio, which is especially suitable for use in aerospace applications. Tubing can be produced having a CSR (contractile strain ratio) that enhances the fatigue endurance limit. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: TI-109. Producer or source: Sandvik.

OVAKO 803 J/EN 100CR6

Alloy Digest ◽  
2008 ◽  
Vol 57 (7) ◽  
Keyword(s):  
Fatigue Strength ◽  
North America ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Cold Forming ◽  
Bearing Steels

Abstract Ovako 100Cr6 comprises a group of through-hardening bearing steels with modification to improve machining, cold forming, and cleanliness for better fatigue strength. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on casting, forming, and heat treating. Filing Code: SA-582. Producer or source: Ovako North America Inc.

DETERMINISTIC APPROACH TO WATERSHED MODELING

1971 ◽  
Vol 2 (3) ◽  
pp. 146-166 ◽  
Author(s):  
DAVID A. WOOLHISER
Keyword(s):  
Boundary Conditions ◽  
Watershed Modeling ◽  
Deterministic Approach ◽  
Mass Energy ◽  
Deterministic Models ◽  
Conservation Of Mass ◽  
Hydrologic Process ◽  
Theoretical Structure ◽  
Physically Based ◽  
Initial And Boundary Conditions

Physically-based, deterministic models, are considered in this paper. Physically-based, in that the models have a theoretical structure based primarily on the laws of conservation of mass, energy, or momentum; deterministic in the sense that when initial and boundary conditions and inputs are specified, the output is known with certainty. This type of model attempts to describe the structure of a particular hydrologic process and is therefore helpful in predicting what will happen when some change occurs in the system.

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