Probabilistic Stress-Life (P-S-N) Study on Bearing Steel Using Alternating Torsion Life Test

• Published in: Tribology transactions Vol. 52; no. 6; pp. 807 - 816
• Main Authors: Shimizu, Shigeo, Tsuchiya, Kazuo, Tosha, Katsuji
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01-11-2009; Taylor & Francis; Taylor & Francis Inc
• Subjects: Alternating Torsion; Amplitudes; Applied sciences; Bearing Steel; Bearing steels; Bearings; Chromium steels; Contact of materials. Friction. Wear; Exact sciences and technology; Exponents; Fatigue failure; Fatigue Limit; Fracture mechanics (crack, fatigue, damage...); Friction, wear, lubrication; Fundamental areas of phenomenology (including applications); Log-Normal Distribution; Machine components; Mechanical engineering. Machine design; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; P-S-N Curve; Physics; Probabilistic methods; Probability theory; Rolling Bearings; Rolling-Contact Fatigue; Shear stress; Shearing; Solid mechanics; Steel; Stresses; Structural and continuum mechanics; Torsion; Tribology; Weibull Distribution Function; Wöhler Curve; Roll contact fatigue; Hardness test; Torsion test; Gaussian distribution; Rolling contact; Metal; P-S-N Curve; Fatigue fracture; Modeling; Rolling bearing; LogNormal Distribution; Rolling Bearings; Alternating Torsion; Ball bearing steel; Weibull distribution; Probabilistic approach; Wöhler Curve; Mechanical contact; Fatigue limit; Hardness; Life test; Experimental study; Bearing steel; Shearing; Compressive stress; Tensile stress; Weibull Distribution Function; Stainless steel; Shear stress; Rolling-Contact Fatigue; Tribology
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402000903125345

Probabilistic stress-life (P-S-N) studies using alternating torsion life test were conducted with the bearing steel JIS SUJ2/AISI 52100 having a hardness range of Rockwell C scale of 58-62 HRC to determine the existence of a fatigue limit for this through-hardened steel. One hundred and fifty (150) alternating torsion tests were performed at six torsion maximum shear stress amplitudes of 0.5, 0.63, 0.76, 0.80, 0.95, and 1.0 GPa. The number of specimens that were run at each stress amplitude varied from 19 to 33. There is no observable fatigue limit for JIS SUJ2/AISI 52100 bearing steel. On log-log plotted data, life is linear and is inversely proportional to shearing stress to a 10.34 exponent. The failure mode of the experiment is due to the conjugate tensile and compressive alternating stresses in accordance with alternating shearing stresses. The three-parameter Weibull life distribution function with a constant value of the Weibull slope m = 3/2 was found to have the best conformity followed by the log-normal distribution and the two-parameter Weibull distribution function. The shear stress-life exponent (A = 10.34) for JIS SUJ2/AISI 52100 bearing steel was independent of the Weibull slope.