Effects of replication on measured S-N curves of metals

Duan, Kai, Beer, Aiden and Clegg, Richard E. 2011, Effects of replication on measured S-N curves of metals, Advanced materials research, vol. 275, pp. 35-38.

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Title Effects of replication on measured S-N curves of metals
Author(s) Duan, Kai
Beer, Aiden
Clegg, Richard E.
Journal name Advanced materials research
Volume number 275
Start page 35
End page 38
Total pages 4
Publisher Trans Tech Publications
Place of publication Lausanne, Switzerland
Publication date 2011
ISSN 1022-6680
Keyword(s) (percent) replication
extruded magnesium
fatigue
S-N Curve
statistical analysis
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 091207 Metals and Alloy Materials
Socio Economic Objective 861299 Fabricated Metal Products not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044362

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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