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Frequency fatigue crack growth

Fig. 8.64 Influence of hydrogen pressure, frequency and waveform on the enhancement of fatigue crack growth in 708M40 steel A/f = 30 (after McIntyre )... Fig. 8.64 Influence of hydrogen pressure, frequency and waveform on the enhancement of fatigue crack growth in 708M40 steel A/f = 30 (after McIntyre )...
In common with many of the alloy-environment systems described so far, if the alloy is not susceptible to stress-corrosion cracking under constant stress or stress intensity, then little or no effect of environment on fatigue crack growth is observed. In these cases, frequency, R ratio and potential within the passive or cathodically protected ranges for titanium have no effect on growth rates. [Pg.1310]

Fig. 8.67 Effect of frequency on corrosion fatigue crack growth behaviour of Ti-6A1-4V in aqueous 0.6 M NaCl (after Pelloux )... Fig. 8.67 Effect of frequency on corrosion fatigue crack growth behaviour of Ti-6A1-4V in aqueous 0.6 M NaCl (after Pelloux )...
Pao, P. S., Wei, W. and Wei, R. P., Effect of frequency on fatigue crack growth response of AISl 4340 steel in water vapour , Proc. of Environment Sensitive Fracture of Engineering Materials, 24-26 Oct. 1977, Chicago, USA, The Metallurgical Society of the AIME, pp. 565-580 (1977)... [Pg.1325]

Atkinson, J. D. and Lindley, T. C, The effect of frequency and temperature on environmentally assisted fatigue crack growth below in steels , Proc. The Influence of... [Pg.1325]

Fig. 7.1 Fatigue crack growth rate, da/dN, plotted as a function of stress intensity factor range, AK in AD 90 alumina in 1050°C air at cyclic frequencies of 0.13 Hz and 2 Hz at R = 0.15. After Ref. 34. Fig. 7.1 Fatigue crack growth rate, da/dN, plotted as a function of stress intensity factor range, AK in AD 90 alumina in 1050°C air at cyclic frequencies of 0.13 Hz and 2 Hz at R = 0.15. After Ref. 34.
FIGURE 7.10 Effect of load cycle frequency on fatigue crack growth rate (daldN) vs. stress intensity factor range (AK) relationships for a carbon steel. ... [Pg.175]

In this context it should be mentioned that different efforts have been made to model the fatigue crack growth in polymers. In order to account for the various growth rates da/dN influenced by AKp K, R-ratio, frequency, temperature and type of material Williams first proposed a modified Dugdale-model with a... [Pg.191]

Fig. 55. Corrosion fatigue crack growth rate in sensitized Type 304SS as a function of potential and frequency in 0.01m Na2S04 solution at AK = 20 MPa m. 250 °C. Open symbols denote transgranular mode of cracking, half-symbols denote mixed transgranular/ intergranular mode of cracking, and closed symbols denote intergranular mode of cracking [114]. Reproduced from Corrosion J. 40, 573 0984) by permission of the Editor. Fig. 55. Corrosion fatigue crack growth rate in sensitized Type 304SS as a function of potential and frequency in 0.01m Na2S04 solution at AK = 20 MPa m. 250 °C. Open symbols denote transgranular mode of cracking, half-symbols denote mixed transgranular/ intergranular mode of cracking, and closed symbols denote intergranular mode of cracking [114]. Reproduced from Corrosion J. 40, 573 0984) by permission of the Editor.
Fig. 7.119 Fatigue-crack-growth rates as a function of stress-intensity amplitude for X-65 line pipe steel in air. Frequency 0.1-15 Hz, at R = 0.2. Redrawn from Ref 1 69... Fig. 7.119 Fatigue-crack-growth rates as a function of stress-intensity amplitude for X-65 line pipe steel in air. Frequency 0.1-15 Hz, at R = 0.2. Redrawn from Ref 1 69...
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See also in sourсe #XX -- [ Pg.311 ]



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