Paper Title:
Effects of Replication on Measured S-N Curves of Metals
  Abstract

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.

  Info
Periodical
Edited by
George Ferguson, Ashvin Thambyah, Michael A Hodgson and Kelly Wade
Pages
35-38
DOI
10.4028/www.scientific.net/AMR.275.35
Citation
K. Duan, A. G. Beer, R. E. Clegg, "Effects of Replication on Measured S-N Curves of Metals", Advanced Materials Research, Vol. 275, pp. 35-38, 2011
Online since
July 2011
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Price
$32.00
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