Comparison of fatigue crack growth stress ratio effects under simple variable amplitude loading using fractographic and strain measurements

•Crack closure measurements depend on the location of the gauge.•Stress ratio effects are not the result of closure in the crack wake.•Constant amplitude bands can be measured within variable amplitude loading.•Crack growth for low stress ratios is lower for variable amplitude loading. Crack closure...

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Veröffentlicht in:	International journal of fatigue 2018-07, Vol.112, p.240-252
Hauptverfasser:	White, P.D., Barter, S.A., Medhekar, N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplitudes Crack closure Crack propagation Cycle ratio Fatigue failure Fatigue life Fractography Fracture mechanics Load Load tests Materials fatigue Strain gauges Stress intensity factors Stress ratio Variable amplitude loading
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