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A comparison of fatigue crack formation at holes in 2024-T3 and 2524-T3 aluminum alloy specimens

โœ Scribed by P.J Golden; A.F Grandt Jr.; G.H Bray

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
919 KB
Volume
21
Category
Article
ISSN
0142-1123

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โœฆ Synopsis

The purpose of this research was to compare the resistance to the onset of multi-site damage in thin 2024-T3 and 2524-T3 sheet. Aluminum alloy 2524-T3 is a relatively new fuselage skin sheet material that may offer improved performance with respect to the onset of multi-site damage. The alloys were compared on the basis of crack size frequency distributions measured from multi-hole specimens with and without prior corrosion subjected to cyclic loading. The crack size distributions for the pristine bare and alclad sheet showed no significant difference between 2024-T3 and 2524-T3. When prior corrosion is present, however, thin, bare 2524-T3 offers improved resistance to the onset of multi-site damage.

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