Combined cycle fatigue of 7075 aluminum alloy – Fracture surface characterization and short crack propagation

2016 ◽  
Vol 91 ◽  
pp. 352-362 ◽  
Author(s):  
S.E. Stanzl-Tschegg ◽  
M. Meischel ◽  
A. Arcari ◽  
N. Iyyer ◽  
N. Apetre ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fracture Surface ◽  
Crack Propagation ◽  
Surface Characterization ◽  
Combined Cycle ◽  
Short Crack ◽  
7075 Aluminum Alloy ◽  
Cycle Fatigue

scholarly journals Crack propagation under combined cycle fatigue for a precipitation hardened steel

2017 ◽  
Vol 7 ◽  
pp. 214-221 ◽  
Author(s):  
L. Patriarca ◽  
S. Foletti ◽  
S. Beretta ◽  
S. Parodi ◽  
A. Riva
Keyword(s):  
Crack Propagation ◽  
Hardened Steel ◽  
Combined Cycle ◽  
Cycle Fatigue

Fatigue Performance of High-Pressure Waterjet-Peened Aluminum Alloy

2001 ◽  
Vol 124 (1) ◽  
pp. 118-123 ◽  
Author(s):  
M. Ramulu ◽  
S. Kunaporn ◽  
M. Jenkins ◽  
M. Hashish ◽  
J. Hopkins
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Life ◽  
Fatigue Crack Growth ◽  
Crack Propagation ◽  
Crack Growth ◽  
Fatigue Crack Propagation ◽  
High Cycle Fatigue ◽  
Cycle Fatigue

An experimental study of high-pressure waterjet peening on 7075-T6 aluminum alloy was conducted to investigate the effects of waterjet on high-cycle fatigue life and fatigue crack growth. Unnotched hourglass-shaped circular cross section test specimens were fatigue tested in completely reversed rotating bending R=Smin/Smax=−1 to determine fatigue life behavior (S-N curves). Single-edge-notched flat tensile test specimens were tested in the tension-tension fatigue crack growth tests R=Smin/Smax=0.1 to determine fatigue crack propagation behavior (da/dN versus ΔK). Surface characteristics and fracture surfaces were evaluated by scanning electron microscopy (SEM). Results show that waterjet peening can increase high-cycle fatigue life, delay fatigue crack initiation, and decrease the rate of fatigue crack propagation.

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