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Construction of idealized S-N Lines - an overview of proposed methods

✍ Scribed by Prof. Dr. A. Buch


Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
771 KB
Volume
13
Category
Article
ISSN
0933-5137

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✦ Synopsis


Abstract

Various methods of building idealized S‐N lines were described and analyzed. The slope coefficient k may be considered approximately constant for similar specimens made from similar materials with similar heat treatment undergoing loading cycles of the same type. The stress concentration factor K~T~ of the specimen affects in general the slope coefficient of the S‐N line, but in the case of limited variation of K~T~ (only moderate K~T~ or only high K~T~) the slope coefficient may be assumed nearly constant. A general approximation method was proposed where the construction of the S‐N line takes into account the material properties, the notch, surface and size factors and the type of loading.


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