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Effects of replication on measured S-N curves of metals

Duan, Kai, Beer, Aiden and Clegg, Richard E. 2010, Effects of replication on measured S-N curves of metals, in SIF 2010 : Proceedings of the 2010 International Conference on Structural Integrity and Failure, Auckland, New Zealand, Trans Tech Publications, [Zurich, Switzerland], pp. 1-4.

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Title Effects of replication on measured S-N curves of metals
Author(s) Duan, Kai
Beer, Aiden
Clegg, Richard E.
Conference name Structural Integrity and Failure. Conference (2010 : Auckland, New Zealand)
Conference location Auckland, New Zealand
Conference dates 4-7 Jul. 2010
Title of proceedings SIF 2010 : Proceedings of the 2010 International Conference on Structural Integrity and Failure, Auckland, New Zealand
Editor(s) [Unknown]
Publication date 2010
Conference series Structural Integrity and Failure Conference
Start page 1
End page 4
Publisher Trans Tech Publications
Place of publication [Zurich, Switzerland]
Keyword(s) Fatigue
S-N Curve
(percent) replication
statistical analysis
extruded magnesium
Summary Replication, or repeated tests at the same stress amplitude, is used to provide statistical confidence in life data during the development of S-N curves. This paper discusses the effects of replication on the measurement of S-N curves and presents an alternative to traditional replication methods for the determination of S-N curves, particularly for the development of preliminary S-N curves. Using specimens made out of the extruded bars of a magnesium alloy, it is demonstrated that the S-N curve estimated using the data from non-replication tests is almost same as that from replication tests. The advantage of using non-replication fatigue tests is that it uses fewer specimens, in this instance, only half of that required for 50% replication fatigue test, to achieve the same estimation as that of the replication fatigue tests. Another advantage of using non-replication fatigue tests is that it can detect the non-linearity using limited specimens.
Language eng
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category E1.1 Full written paper - refereed
Copyright notice ©2010, SIF
Persistent URL http://hdl.handle.net/10536/DRO/DU:30035488

Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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