Period of origin and growth of fatigue cracks in extruded aluminum alloy panels

1984 ◽  
Vol 19 (5) ◽  
pp. 440-444 ◽  
Author(s):  
S. Ya. Yarema ◽  
O. D. Zinyuk ◽  
A. G. Vovnyanko ◽  
A. I. Zboromirskii ◽  
G. Yu. Bengus
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Cracks ◽  
Aluminum Alloy Panels

Development of short fatigue cracks in aluminum alloy 2524-T3 specimens

2017 ◽  
Vol 2017 (4) ◽  
pp. 322-329 ◽  
Author(s):  
L. R. Botvina ◽  
G. I. Nesterenko ◽  
A. P. Soldatenkov ◽  
Yu. A. Demina ◽  
A. A. Sviridov
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Cracks

Plastic Strain Distribution at the Tips of Propagating Fatigue Cracks

1976 ◽  
Vol 98 (1) ◽  
pp. 24-29 ◽  
Author(s):  
D. L. Davidson ◽  
J. Lankford
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Plastic Strain ◽  
Plastic Zone ◽  
Strain Distribution ◽  
Dimensionless Parameter ◽  
Fatigue Cracks ◽  
Crack Tip ◽  
Cyclic Plastic Zone ◽  
Plastic Zones

The techniques of selected area electron channeling and positive replica examination have been used to study the plastic zones attending fatigue crack propagation in 304 SS, 6061-T6 aluminum alloy, and Fe-3Si steel. These observations allowed the strain distribution at the crack tip to be determined. The results indicate that the concepts of a monotonic and a cyclic plastic zone are essentially correct, with the strains at demarcation between these two zones being 3 to 6 percent. Strain distribution varies as r−1/2 in the cyclic zone and as ln r in the monotonic plastic zone. The strain distributions for all materials studied may be made approximately coincident by using a dimensionless parameter related to distance from the crack tip.

Fatigue Crack Growth of LC9 Aluminum Alloy under Flying Loading with Corrosion Damage

2014 ◽  
Vol 488-489 ◽  
pp. 66-69
Author(s):  
Xu Dong Li ◽  
Zeng Jie Cai ◽  
Zhi Tao Mu
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Fatigue Cracks ◽  
Corrosion Damage ◽  
Growth Behavior ◽  
Transport Aircraft ◽  
Suitable Parameter ◽  
Corrosion Pits

This paper investigates the growth behavior of fatigue cracks initiated at corrosion pits in laboratory coupons of LC9 aluminum alloy subjected to a transport aircraft loading spectrum. Corrosion pits were introduced by exposing the coupons to EXCO solution for a variety of periods to produce corrosion damage varying from mild to severe. In general, the presence of corrosion damage reduced the fatigue lives of components to a severe extent. It was found that the depth of the corrosion pit was a suitable parameter for characterizing the corrosion damage and for predicting the fatigue life of the coupons using commercial fatigue crack growth software

The effect of solidification rate on the growth of small fatigue cracks in a cast 319-type aluminum alloy

1999 ◽  
Vol 30 (12) ◽  
pp. 3055-3068 ◽  
Author(s):  
M. J. Caton ◽  
J. Wayne Jones ◽  
J. M. Boileau ◽  
J. E. Allison
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Cracks ◽  
Solidification Rate
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