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Fatigue cracking behavior of 6063 aluminum alloy for fitting clamps of overhead conductor lines

Fatigue cracking behavior of 6063 aluminum alloy for fitting clamps of overhead conductor lines

Authors :
Zhu-Man Song
C. H. Li
G.P. Zhang
Wu Ximao
Lilan Zeng
Source :
Materials & Design, Vol 88, Iss, Pp 478-484 (2015)
Publication Year :
2015
Publisher :
Elsevier, 2015.

Abstract

The 6063 aluminum alloy is a candidate for fitting clamps to fasten and connect the Al alloy overhead conductor lines. The Al alloy fitting clamps with different extents of stress concentration may become quite dangerous under cyclic loading due to the wind-induced swing of the conductor lines. In this study, fatigue properties and cracking behavior of the 6063 aluminum alloy were investigated using three-point-bending specimens with different notch angles. The relationship between the nominal fatigue cracking resistance and the notch angle of the Al alloy specimens was obtained. Fatigue damage and notch angle-dependent cracking behaviors were evaluated. Fatigue reliability of the 6063 alloy specimens with different stress concentration factors was discussed combined with a grain size of the alloy. Keywords: 6063 Al alloy, Fatigue, Crack growth, Stress concentration, Stress concentration

Details

Language :
English
ISSN :
02641275
Volume :
88
Database :
OpenAIRE
Journal :
Materials & Design
Accession number :
edsair.doi.dedup.....b73bf3018c23c4049ab5c9de561eae54