Fatigue Crack Growth of Alloy 7050-T7451 Plate in L-S Orientation

Rui Bao; Xiao Chen Zhao; Ting Zhang; Jian Yu Zhang

doi:10.4028/www.scientific.net/KEM.525-526.221

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Fatigue Crack Growth of Alloy 7050-T7451 Plate in L-S Orientation

Abstract:

Experiments have been conducted to investigate the crack growth characteristics of 7050-T7451 aluminium plate in L-S orientation. Two loading conditions are selected, i.e. constant amplitude and constant stress intensity factor range (ΔK). The effects of ΔK-levels and stress ratios (R) on crack splitting are studied. Test data shows that crack splitting could result in the reverse of crack growth rate trend with the increasing R ratio at high ΔK-level. The appearance of crack splitting depends on both ΔK and R.

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Periodical:

Key Engineering Materials (Volumes 525-526)

Pages:

221-224

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.525-526.221

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Online since:

November 2012

Authors:

Rui Bao, Xiao Chen Zhao, Ting Zhang, Jian Yu Zhang

Keywords:

Aluminium Alloy, Crack Deflection, Fatigue Crack Growth (FCG)

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