Fig. 23 Mechanism of fatigue crack propagation by alternate slip at the crack tip. Sketches are simplified to clarify the basic concepts. (a) Crack opening and crack tip blunting by slip on alternate slip planes with increasing tensile stress. (b) Crack closure and crack tip resharpening More

Fig. 10 Crack tip stress-intensity control of fatigue crack propagation in 7075-T6 aluminum alloy sheet—long-transverse loading. Remote and wedge force methods of loading specimens in aqueous 3.5% sodium chloride environment and benign dry air environment. Source: Ref 46 More

Fig. 39 (a) Fatigue crack propagation regimes and (b) crack growth rates of wrought aluminum alloys. L-T, longitudinal transverse; T-L, transverse longitudinal. Source: Ref 65 More

Fig. 15 Mechanism of fatigue crack propagation by alternate slip at the crack tip. Sketches are simplified to clarify the basic concepts. (a) Crack opening and crack tip blunting by slip on alternate slip planes with increasing tensile stress. (b) Crack closure and crack tip resharpening More

Fig. 24 Mechanism of fatigue crack propagation by alternate slip at the crack tip. Sketches are simplified to clarify the basic concepts. (a) Crack opening and crack-tip blunting by slip on alternate slip planes with increasing tensile stress. (b) Crack closure and crack-tip resharpening More

Fig. 3 Thermal fatigue failure and conventional fatigue crack-propagation fracture during reversed-load cycling of acetal. Source: Ref 36 More

Fig. 1088 Transgranular corrosion-fatigue crack propagation in a solution-treated and peak-aged Al-5.6Zn-1.9Mg sample tested in humid nitrogen gas. Compare with Fig. 1091 and 1092 . SEM, 5000× (R.E. Ricker, University of Notre Dame, and D.J. Duquette, Rensselaer Polytechnic Institute) More

Fig. 1317 Quasi-brittle fatigue crack propagation in 3.2-mm (0.13-in.) thick polycarbonate sheet. Arrow indicates direction of crack growth. At this thickness, polycarbonate shows features characteristic of both brittle (microcracking) and ductile (thinning and fibrillation) fracture. Note More

Fig. 593 Effect of inclusions on fatigue crack propagation (FCP) in ASTM A533B. Fractograph shows compact and well-dispersed type III MnS inclusions in calcium-treated electric furnace steel, through-thickness (S-L) orientation. Balance of inclusions were round, calcium-modified duplex types More

Fig. 594 Effect of inclusions on fatigue crack propagation (FCP) in ASTM A533B. Ductile fatigue striations and secondary cracking are present in this area remote from inclusion formations. Conventional electric furnace heat; L-T orientation; Δ K = 46 MPa m (42 ksi More

Fig. 44 SEM views of intergranular facets within fatigue crack propagation area of cold-worked electrolytic tough pitch copper tested in rotating bending at moderately low stress More

Fig. 42 Fatigue crack propagation rate versus stress intensity factor range. Fatigue striations may be present on the fracture surface for loading in the linear portion of the curve (Paris Law region), and permit analytical estimations of life to fracture. Just as fracture toughness varies More

Fig. 9 Corrosion-fatigue crack propagation rate ( da / dN ) as a function of the cyclic crack tip stress-intensity range (Δ K ). See the text for an explanation of the variables. Source: Ref 45 More

Fig. 15 Effect of stress ratio ( R ) on corrosion-fatigue crack propagation in ASTM A533 B and A508 carbon steels exposed to pressurized high-purity water at 288 °C (550 °F). Frequency: 0.017 Hz. Average behavior in air is represented by the dashed line labeled “Dry.” Source: Ref 59 More

Fig. 18 Corrosion-fatigue crack propagation in ASTM A 471 steel exposed to moist air and steam. Temperature: 100 °C (212 °F); frequency: 100 Hz; stress ratio: R = 0.35. Source: Ref 68 More

Fig. 10 Schematic representation of fatigue crack propagation behavior. In regime I, the crack-growth rate is low because the threshold for crack propagation is approached. In regime II, the Paris law is obeyed, while in regime III, the crack-growth rate increases above that predicted More

Fig. 20 Schematic plot of fatigue crack propagation rate, da / dN , versus stress-intensity range, Δ K , on a log-log scale More

Fig. 9 Fatigue crack propagation behavior. ABS, acrylonitrile-butadiene-styrene; PC, polycarbonate; M-PPE, modified polyphenylene ether More

Fig. 51 Fatigue crack propagation data for 7050-T7452 hand forgings. L-T, longitudinal transvers; S-L, short longitudinal; CT, compact tension. Source: Ref 99 More

Fig. 2 Constant-amplitude fatigue-crack propagation data for 2024-T351 and 2024-T851 plate. Source: Ref 1 More