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Effects of replication on measured S-N curves of metals

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journal contribution
posted on 06.12.2017, 00:00 authored by Kai DuanKai Duan, A Beer, Richard CleggRichard Clegg
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.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

275

Start Page

35

End Page

38

Number of Pages

4

eISSN

1022-6680

ISSN

1022-6680

Location

Zurich, Switzerland

Publisher

Trans Tech Publications

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Deakin University; Institute for Resource Industries and Sustainability (IRIS); Process Engineering and Light Metals;

Era Eligible

Yes

Journal

Advanced materials research.