Fig. 23 Carbon steel shaft broken in rotating bending fatigue. Fatigue fracture initiated at numerous sites along a sharp snap ring groove; ratchet marks appear as shiny spots along the surface. Cracks coalesced into a single fatigue crack that—due to the bending stress distribution—grew most More

Fig. 14 Results from rotating-bending fatigue. With the increase in fatigue resistance, the torque of the existing transmission gears could also be increased. Adapted from Ref 19 More

Fig. 23 Carbon steel shaft broken in rotating-bending fatigue. Fatigue fracture initiated at numerous sites along a sharp snap ring groove; ratchet marks appear as shiny spots along the surface. Cracks coalesced into a single fatigue crack that—due to the bending-stress distribution—grew most More

Fig. 473 Rotating bending fatigue fracture of an AISI 4817 shaft, carburized and hardened to 60 HRC on the surface. Fracture initiated in six fillet areas around the periphery, near the runouts of six grooves. Each fatigue area propagated separately, but uniformly, inward to final rupture More

Fig. 24 Rotating bending fatigue failure of keyed medium-carbon steel shaft. Fatigue initiated at a corner of the keyway, as marked. Beach marks in that vicinity are concentric about the origin. As the fatigue crack grew, the bending stress distribution produced more rapid growth near More

Fig. 4 Relation between rotating-bending fatigue strength and tensile strength of iron, based on fatigue limit or failure in 10 7 cycles. Source: See Angus (1960) and Grover (1960) in “Selected References: Prior to 1980” More

Fig. 21 Rotating-bending fatigue strength of malleable cast iron and compacted graphite (CG) cast iron. (a) Unnotched and notched fatigue curves of two ferritic malleable irons (25 mm diameter specimens). (b) Unnotched and notched fatigue curves for ferritic, pearlitic, and higher-nodularity More

Fig. 3 Rotating bending fatigue strength of duplex stainless steel in salt solution More

Fig. 1 Rotating bending fatigue strength vs. ultimate tensile strength of magnesium alloys (small smooth specimens). Source: Ref 2 More

Fig. 21 Dimensions (in inches) of rotating-bending fatigue (RBF) test specimens More

Fig. 30 Rotating bending fatigue strength of longitudinal specimens at R = −1 from three HATS according to Table 4 More

Fig. 11 Rotating-bending fatigue properties of Carbo-Austempered vs. conventionally carburized and hardened 8822 steel. Q&T, quenched and tempered. Source: Ref 5 More

Fig. 6 Relationship between rotating-bending fatigue limit and tensile strength for through-hardened steels. Source: Ref 1 More

Fig. 35 Rotating-bending fatigue versus tempering temperature for the SAE 1038 shafts furnace tempered 1h. Source: Ref 43 More

Fig. 39 Rotating-bending fatigue results for the SAE 1050M shafts. Source: Ref 43 More

Fig. 24 Rotating-bending fatigue failure of keyed medium-carbon steel shaft. Fatigue initiated at a corner of the keyway, as marked. Beach marks in that vicinity are concentric about the origin. As the fatigue crack grew, the bending-stress distribution produced more rapid growth near More

Fig. 20 Wöhler diagram of rotating-bending fatigue tests for ALPORAS and Foamtech samples. Adapted from Ref 64 More

Fig. 25 Relation between rotating-bending fatigue strength and tensile strength of iron, based on fatigue limit or failure in 10 7 cycles. Source: Ref 3 More

Fig. 5 Typical rotating-bending fatigue marks on the fracture surface of a uniformly loaded rotating shaft. Marks are produced from single and multiple origins (arrows) having moderate and severe stress concentration; shaded areas are final-fracture zones. Shaft rotation is clockwise. More

Fig. 15 Rotating-bending fatigue ( R = −1) of compacted graphite iron as a function of temperature. Source: Ref 24 More