Mechanical Behavior Laboratory University of Nevada, Reno

Paper Abstract

[J68] Onal, O., Canadinc, D., Sehitoglu, H., Verzal, K., and Jiang, Y., 2012 "Investigation of rolling contact crack initiation in bainitic and pearlitic rail steels" Fatigue & Fracture of Engineering Materials & Structures, Vol.35, pp.985-997. doi: 10.1111/j.1460-2685.2012.01686.x

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Abstract68

[J68] Onal, O., Canadinc, D., Sehitoglu, H., Verzal, K., and Jiang, Y., 2012 "Investigation of rolling contact crack initiation in bainitic and pearlitic rail steels" Fatigue & Fracture of Engineering Materials & Structures, Vol.35, pp.985-997

Paper Figures

Fig. 5

Figure 5. Shear stress-shear strain comparison of pearlitic and bainitic rail steel under pure torsion up to the fracture point (the first two plots represent the behaviour under cyclic loading) (Download data).

Fig. 6

Figure 6. Experimental ratchetting data for bainitic steel under a uniaxial test from -700 to 1200 MPa (Download data).

Fig. 7

Figure 7. Ratchetting data for pearlitic steel under a uniaxial test from -400 to 900 MPa (Download data).

Fig. 8

Figure 8. Comparison of experimental ratchetting results with simulated curves for different values of x(i). The ratchetting rates shown are for a uniaxial cyclic loading of bainitic rail steel from -500 to 1200 MPa (Download data).

Fig. 9

Figure 9. Fatigue parameter and experimental fatigue results from uniaxial tension-compression and torsional tests on bainitic rail steel (Download data).

Fig. 10

Figure 10. Correlation of fatigue parameter with uniaxial and shear experiments on pearlitic rail steel (Download data).

Fig. 11

Figure 11. Surface displacements (presented in a normalized fashion) due to ratchetting for bainitic and pearlitic rail steels subjected to a load with a peak Hertzian stress of p0= 900 MPa (Download data).

Fig. 12

Figure 12. The crack initiation life for bainitic rail steel given the normal and shear load (Download data).

Fig. 13

Figure 13. Predicted crack initiation life for pearlitic rail steel given the normal and shear load (Download data).

Fig. 14

Figure 14. A fatigue crack initiation map predicted for pearlitic and bainitic rail steels displaying the loading conditions that will lead to failure after 10,000 and 1,000,000 cycles. Computed shakedown data are also presented for comparison (Download data).

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