期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 44, 期 -, 页码 168-176出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2012.05.002
关键词
High frequency mechanical impact (HFMI); Weld toe improvement; Fatigue strength improvement; High strength steel
资金
- LIGHT research programme of the Finnish Metals and Engineering Competence Cluster (FIMECC)
- Finnish Funding Agency for Technology and Innovation (TEKES)
- EU Research Fund for Coal and Steel [RFSR-CT-2010-00032]
Numerous studies have observed that the fatigue strength of improved welds increases with material yield strength. This paper provides a comprehensive evaluation of published data for high frequency mechanical impact treated welds. In total, 228 experimental results for three weld geometries subject to R = 0.1 axial loading have been reviewed. A design recommendation including one fatigue class increase in strength (about 12.5%) for every 200 MPa increase in static yield strength is proposed and are shown to be conservative with respect to all available data. Special cautions are given for high R-ratio or variable amplitude fatigue and potential alternate failure locations. (C) 2012 Elsevier Ltd. All rights reserved.
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