| Issue |
MATEC Web of Conferences
Volume 12, 2014
FDMD II - JIP 2014 - Fatigue Design & Material Defects
|
|
|---|---|---|
| Article Number | 07002 | |
| Number of page(s) | 2 | |
| Section | Session 7: Fatigue Crack Growth and Thresholds at Defects I | |
| DOI | https://doi.org/10.1051/matecconf/20141207002 | |
| Published online | 09 June 2014 | |
Inclined defects and their effect on the fatigue limit and small crack growth
1 VTT Technical Research Centre of Finland, P.O.Box 1000, FI-20044 VTT (Espoo), Finland
2 Professor Emeritus, Kyushu University, Fukuoka, Japan
a Corresponding author: andrew.roiko@vtt.fi
Small FIB (Focused Ion Beam) milled notches were introduced in quenched and tempered 34CrNiMo6 steel to monitor initiation and growth of cracks in situ. The effect of the defects on the fatigue limit is discussed in terms of the √area model. Notches with projected √area of 30 to 56 μm normal to the applied stress were inclined by 0, 45, and 60 degrees. The effect of size and inclination on the small crack growth as well as the fatigue limit is discussed.
© Owned by the authors, published by EDP Sciences, 2014
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