Fig. 12 Torsion and bending endurance ratios (fatigue endurance/monotonic strength) with drilled holes and notched values compared with theory More

Fig. 19 Effect of surface condition on endurance limit of ductile iron. Tests made on 10.6 mm (0.417 in.) diam specimens. Fully reversed stress ( R = −1) More

Fig. 20 Effect of tensile strength and matrix structure on endurance ratio for ductile iron. Source: Ref 11 , 12 More

Fig. 5 Relationship between bending fatigue endurance limit and surface residual stresses for various carbon and alloy steels. All steels were water quenched except where otherwise indicated. Source: Ref 8 , 45 More

Fig. 9 Tensile strength versus fatigue endurance limit of various powder metallurgy 400-series stainless steels. Source: Ref 29 More

Fig. 17 Lubricant tester used to measure endurance (wear) life and load-carrying capacity of either dry solid-film lubricants or wet lubricants in sliding steel-on-steel applications. (a) Key components of instrument. (b) Exploded view showing arrangement of V-blocks and rotating journal More

Fig. 7 Effect of tensile hold time on fatigue endurance of type 316 stainless steel. Source: Ref 2 More

Fig. 9 Fatigue endurance limit versus tensile strength for notched and unnotched cast and wrought steels with various heat treatments. Data obtained in R.R. Moore rotating-beam fatigue tests; theoretical stress concentration factor = 2.2. More

Fig. 20 Effect of ductility on endurance of ferritic steels. Source: Ref 31 More

Fig. 16 Effect of tensile strength and matrix structure on endurance ratio for ductile iron. Source: Ref 24 , 25 More

Fig. 17 Goodman diagrams for ductile irons. (a) Endurance limits for bending stresses. (b) Endurance limits for tension-compression stresses. Source: Ref 28 More

Fig. 16 Fatigue endurance limit versus tensile strength for notched and unnotched cast and wrought steels with various heat treatments. Data obtained in R.R. Moore rotating-beam fatigue tests, theoretical stress-concentration factor = 2.2 More

Fig. 8 Corrosion-fatigue endurance data for specimens of 13% Cr steel. Rotating bending tested (mean load zero) at a frequency of 50 Hz and temperature of 23 °C (73 °F). (a) Smooth specimens. (b) Notched specimens. Source: Ref 40 More

Fig. 9 Evaluation of the range of finite endurance in Fig. 8 and conjunction with the range of transition in Fig. 5(b) to the type I fatigue diagram More

Fig. 10 Comparison of results in the range of the finite endurance. The position of the thick lines is constant in the three subfigures. (a) Condition B is better than condition A. (b) The thick lines represent 50% of probability. Condition A becomes better because the range of condition B More

Fig. 23 Corrosion fatigue endurance data for specimens of 13% Cr steel in rotating-bending testing (mean load zero) at a frequency of 50 Hz and temperature of 23 °C (73 °F). Notched specimens K t ≈ 3. Source: ASM Handbook , Vol 13, p 296 More

Fig. 18 Effect of grain size on endurance limit and crack growth threshold behavior of low-carbon steel ( Ref 25 ) More

Fig. 5 Plot for estimating fatigue-endurance limits (point B in Fig. 4 ) for common structural alloy groups. Source: Ref 6 More

Fig. 10 Endurance lifetimes of MoS 2 on various substrates, showing longest life-times for Si 3 N 4 and 52100 bearing steel. Sliding material, Ti-6Al-4V; sliding speed, 1.2 m/s (3.9 ft/s); applied load, 17 N/ball (1.7 kgf/ball). Source; Ref 25 More

Fig. 29 Modified Goodman diagram relates the endurance limit to an allowable working stress when it is superimposed on a steady (mean) stress. Source: Ref 40 More