Fatigue Crack Growth Rates

ASTM E647-93, "Measurement of Fatigue Crack Growth Rates," Annual Book of ASTM Standards, ASTM Puhhcations, Philadelphia, 1993. 

Fig. 15.8. Fatigue crack-growth rates for pre-cracked material.

Fig. 8.63 Effect of environment on fatigue crack growth rate in 1% Cr-Mo-V steel at 550°C (after Tomkins and Wareing )...

Special requirements for fatigue testing in aqueous environments are addressed in the Annexe to ASTM E647 1986a Standard Test Method for Measurement of Fatigue Crack Growth Rates . 

Test method for measurement of fatigue crack growth rates... 

FIGURE 25.2 Constant amplitude fatigue crack growth rate results for natural rubber at i -ratios of 0 and 0.05. 

A hnear crack growth rate prediction model analogous to Miner s linear damage mle has been proposed to predict the fatigue crack growth rate for variable amplimde signals using constant... 

Mars, W.V. and Fatemi, A., The correlation of fatigue crack growth rates in rubber subjected to multiaxial loading using continuum mechanical parameters. Rubber Chem. TechnoL, 80, 169, 2007. 

Harbour, R., Fatemi, A., and Mars, W.V., The effect of a dwell period on fatigue crack growth rates in filled SBR, Rubber Chem. Technol, 80, 838, 2007. 

Superior fatigue behaviour, as measured by the fatigue crack growth rate. 

Figure 7. Fatigue crack growth rates as a function of composition for PH/PMMA SINs. Ratios are for PH/PMMA contents.

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 7.2 also includes the fatigue crack growth rates predicted on the basis of sustained load fracture data (dashed line), which are clearly in excess of those actually observed, especially at low AK and high vc. 

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