Fatigue crack initiation and growth Behavior of Aluminum alloy 2024-T3 in air

2003 ◽  
Vol 2003 (0) ◽  
pp. 299-300
Author(s):  
Shinji Saka ◽  
Sotomi Ishihara ◽  
Takahito Goshima ◽  
Shinichiro Nomata
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Growth Behavior ◽  
Aluminum Alloy 2024

scholarly journals A DIC-Based Study on Fatigue Damage Evolution in Pre-Corroded Aluminum Alloy 2024-T4

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2243 ◽  
Author(s):  
Haipeng Song ◽  
Changchun Liu ◽  
Hao Zhang ◽  
Sean Leen
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Damage ◽  
Damage Evolution ◽  
Image Correlation ◽  
Multiple Cracks ◽  
Mixed Mode Fracture ◽  
Corrosion Condition ◽  
Aluminum Alloy 2024

This paper investigates the fatigue damage and cracking behavior of aluminum alloy 2024-T4 with different levels of prior corrosion. Damage evolution, crack initiation and propagation were experimentally analyzed by digital image correlation, scanning electron microscopy and damage curves. Prior corrosion is shown to cause accelerated damage accumulation, inducing premature fatigue crack initiation, and affecting crack nucleation location, crack orientation and fracture path. For the pre-corrosion condition, although multiple cracks were observed, only one corrosion-initiated primary crack dominates the failure process, in contrast to the plain fatigue cases, where multiple cracks propagated simultaneously leading to final coalescence and fracture. Based on the experimental observations, a mixed-mode fracture model is proposed and shown to successfully predict fatigue crack growth and failure from the single dominant localized corrosion region.

scholarly journals AFM Study on Crack Initiation and Growth Behavior in an Extruded Aluminum Alloy 2024-T3

2005 ◽  
Vol 71 (703) ◽  
pp. 479-485
Author(s):  
Sotomi ISHIHARA ◽  
Shinji SAKA ◽  
Hiroshi SHIBATA ◽  
Takahito GOSHIMA
Keyword(s):  
Aluminum Alloy ◽  
Crack Initiation ◽  
Growth Behavior ◽  
Aluminum Alloy 2024
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