DocumentCode :
853144
Title :
An experimental evaluation of S-N curves and validity of Miner´s cumulative damage hypothesis for an ACSR conductor
Author :
Brunair, Robert M. ; Ramey, G. Ed ; Duncan, Roy R., III
Author_Institution :
Auburn Univ., AL, USA
Volume :
3
Issue :
3
fYear :
1988
fDate :
7/1/1988 12:00:00 AM
Firstpage :
1131
Lastpage :
1140
Abstract :
Laboratory simulation of aeolian vibrations was used in determining the fatigue characteristics of an ACSR conductor subjected to constant and varied amplitude loadings. Using linear regression analyses, S-N curves for first-through fifth-strand breaks were fit to the data, and a pseudoendurance limit of 21.31 MPa (3.09 ksi), was estimated. Subjecting the conductor to three different types of load sequences revealed that M.A. Miner´s cumulative damage hypothesis (1945) is somewhat conservative, but can be assumed valid for design purposes. This information, in conjunction with the actual load histories, will allow electric utility companies to design transmission lines more accurately
Keywords :
overhead line conductors; overhead line mechanical characteristics; power overhead lines; vibrations; ACSR conductor; Miner´s cumulative damage hypothesis; S-N curves; aeolian vibrations; fatigue characteristics; linear regression analyses; Civil engineering; Clamps; Conductors; Equations; Fatigue; Hardware; History; Scattering; Stress; Testing;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/61.193895
Filename :
193895
Link To Document :
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