A Three Dimensional Graphical Aid for Fatigue Data Analysis

Abstract:

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The fatigue behaviour of materials is usually synthesised in terms of stress-life (S-N) curve or in terms of strain-life (e-N) curve, the latter being described by the so-called Manson-Coffin equation. It is known that the assumption of equality of the plastic and elastic components between the Manson-Coffin and the stabilised stress-strain curves leads to the so-called compatibility conditions which connect the equations theoretically. The material constants of the Manson-Coffin and of the stabilised stress-strain curve are commonly determined by best fitting separately the experimental data obtained from strain-controlled fatigue tests. As a consequence the compatibility conditions may not be fulfilled. In this paper a method for fatigue data analysis that ensures the compatibility conditions is proposed and validated against experimental data.

Info:

Periodical:

Key Engineering Materials (Volumes 488-489)

Edited by:

Z. Tonković and M.H. Aliabadi

Pages:

755-758

DOI:

10.4028/www.scientific.net/KEM.488-489.755

Citation:

B. Atzori et al., "A Three Dimensional Graphical Aid for Fatigue Data Analysis", Key Engineering Materials, Vols. 488-489, pp. 755-758, 2012

Online since:

September 2011

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Price:

$35.00

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