Fig. 18 Typical fatigue ( S-N ) diagram of laboratory fatigue testing of medium-strength ferrous metal. More

Fig. 3.42 Schematic hysteresis loops encountered in isothermal creep-fatigue testing. (a) Pure fatigue, no creep. (b) Tensile stress hold, strain limited. (c) Tensile strain hold, stress relaxation. (d) Slow tensile straining rate. (e) Compressive stress hold, strain limited. (f) Compressive More

Fig. 1 As-received strain bar from fatigue testing of a hold-back bar assembly More

Fig. 2 As-received T-head connector from fatigue testing of hold-back bar assembly More

Fig. 10 Schematic of equipment for fatigue testing in the rotational-bending mode More

Fig. 3-8 S-N curves for tension-compression fatigue testing of transverse air-melted and ESR A2 specimens. Source: Ref 4 More

Fig. 3.1 Wöhler’s rotating-cantilever, bending fatigue-testing machine. D , drive pulley; C , arbor; T , tapered specimen butt; S , specimen; a , moment arm; G , loading bearing; P , loading spring. Source: Ref 3.2 More

Figure 12.37 Grip system for tensile fatigue testing of laminates at cryogenic temperatures. Example is a waisted specimen used with [0/±45/0] S , 140- μ m (5.6-mil) boron-epoxy. More

Fig. A.50 Schematic of modern fatigue testing machine. Source: Ref A.55 More

Fig. A.52 Typical axial extensometer for high-temperature fatigue testing More

Fig. A.53 Environmental chamber for fatigue testing. Source: Ref A.55 More

Fig. 21 Effect of case depth on fatigue life. Fatigue tests on induction-hardened 1038 steel automobile axle shafts 32 mm (1.25 in.) in diameter. Case depth ranges given on the chart are depths to 40 HRC. Shafts with lower fatigue life had a total case depth to 20 HRC of 4.5 to 5.2 mm (0.176 More

Fig. 3.40 Comparison of smooth-rotating/pure-bending fatigue test data for 2014-T6 aluminum in dripping commercial synthetic solution and in room-temperature air. A flow of liquid around the center section of the specimen was supplied by capillary action during the test. Source: Ref 3.37 More

Fig. 14.16 Stress-number of cycles curves obtained by means of fatigue tests. Source: Ref 14.18 More

Fig. 11 Fatigue-tested titanium component with cracks initiating in each of three knife seals. The oxide colors reflect the oxide thickness, which would be thicker close to the origin areas. More

Fig. 14 Examples of fretting fatigue test configurations. (a) Cantilever beam reverse bending with single pads. (b) Rotating fully reversing bending with double foot-pad bridges and proving ring More

Fig. 36 Results of reverse bending fatigue tests showing the effect of surface treatments on fatigue life of welded and nonwelded aluminum alloys Coated Chromate etch primer plus a two-component aluminum-pigmented epoxy top coat Peened Brush shot peened to Almen 6 level Air More

Fig. 3 Modern fatigue test frame. Source: Ref 1 More

Fig. 22 Fatigue test results from fillet welds in various strengths of steel. Source: Ref 16 More