Standard: WRC BUL 199
FATIGUE BEHAVIOR OF ALUMINUM ALLOY 5083 BUTT WELDS
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This report discusses the results of a research program on the fatigue behavior of sound weldments in thick aluminum alloys. The specimens of alloy 5083-0 were provided by three aluminum companies and included plain plates, longitudinally welded plates and tranversely welded plates.
Axial fatigue tests were conducted on 54 specimens. The results are shown in S-N diagrams. In addition, a supplemental test program was conducted. This program included the study of residual stresses, weld geometry, and weld quality. Conclusions reached from the study are:
1. Orientation of the weld in the direction of stress applications is beneficial to fatigue strength of a joint.
2. The angle at the toe of the weld reinforcement is the most critical factor in the determination of the fatigue life of an as-welded transverse joint.
3. The actual maximum stress at the weld toe, determined from the nominal stress and stress concentration factor, appears to give a much better indication of expected fatigue life.
4. The fatigue lives of one inch thick welded plates of 5083-0 are significantly lower than those obtained for thin welded plates
|Organization:||Welding Research Council|
|Document Number:||wrc bul 199|
|Change Type:||NEW ADDITION|
|Most Recent Revision:||YES|