Three HCF Models for Strain Fatigue Life of Welded Pipes in Austenitic Stainless Steel | Zendy

Thomas Svensson | Zendy; Dave Hannes | Zendy; Pär Johannesson | Zendy; Magnus Dahlberg | Zendy; Andreas Anderson | Zendy

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Three HCF Models for Strain Fatigue Life of Welded Pipes in Austenitic Stainless Steel

Author(s) -

Thomas Svensson,

Dave Hannes,

Pär Johannesson,

Magnus Dahlberg,

Andreas Anderson

Publication year - 2015

Publication title -

procedia engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.32

H-Index - 74

ISSN - 1877-7058

DOI - 10.1016/j.proeng.2015.02.057

Subject(s) - welding , structural engineering , materials science , amplitude , austenitic stainless steel , fatigue limit , austenite , constant (computer programming) , metallurgy , engineering , physics , corrosion , computer science , microstructure , quantum mechanics , programming language

Fatigue bending tests have been performed on welded pipes made from an austenitic stainless steel. Four types of loading were used: 1) constant amplitude, 2) a load expected at pressure vessel environment, 3) a Gaussian load, and 4) a specially constructed two-level block load. The twenty-eight test results are evaluated using three different models: 1) the classical Basquin equation neglecting the fatigue limit, 2) the ASME model with a fatigue limit, and 3) a model with continuously decreasing fatigue limit. No significant differences between the three models were found. Predictions based on constant amplitude results appear to be non-conservative

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