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Fatigue crack initiation and growth at holes in a high strength bainitic roller bearing steel when loaded with non-proportional shear and compressive cycles
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6896-1834
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-7674-8582
2011 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 33, no 9, 1244-1256 p.Article in journal (Refereed) Published
Abstract [en]

Fatigue initiation from an artificial defect was investigated for a bainitic high strength roller bearing steel. Thin walled pipe specimens with small holes were subjected to multi-axial and non-proportional load cycles. The experimental fatigue crack positions around the hole were predicted with the Findley critical plane criterion. The criterion also ranked the severeness of three load sequences with respect to fatigue risk. Crack growth simulations and crack life measurements with strain gauges confirmed the ranking between the load sequences. Three uni-axial fatigue series with stress gradients were used to determine surface endurance data for the Findley criterion.

Place, publisher, year, edition, pages
2011. Vol. 33, no 9, 1244-1256 p.
Keyword [en]
High strength steel, Non-proportional compressive load cycle, Fatigue experiments, Artificial defect, Crack initiation
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-39042DOI: 10.1016/j.ijfatigue.2011.03.014ISI: 000291628400009ScopusID: 2-s2.0-79956103075OAI: diva2:439286
QC 20110907Available from: 2011-09-07 Created: 2011-09-07 Last updated: 2011-09-07Bibliographically approved

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Alfredsson, BoWåtz, VeronicaOlsson, Erik
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