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Effects of replication on measured S-N curves of metals
journal contribution
posted on 2017-12-06, 00:00 authored by Kai DuanKai Duan, A Beer, Richard CleggRichard CleggReplication, 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
275Start Page
35End Page
38Number of Pages
4eISSN
1022-6680ISSN
1022-6680Location
Zurich, SwitzerlandPublisher
Trans Tech PublicationsLanguage
en-ausPeer 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