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Assessment of fatigue strength of welded steel joints at sub-zero temperatures based on the micro-structural support effect hypothesis
Citation Link: https://doi.org/10.15480/882.3782
Publikationstyp
Doctoral Thesis
Date Issued
2021
Sprache
English
Author(s)
Advisor
Referee
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2021-09-09
TORE-DOI
Citation
Technische Universität Hamburg (2021)
Although it is known that the material properties of steel and its welded joints change with decreasing temperatures, little research has been done on fatigue strength at sub-zero temperatures and design curves and methods for room temperature are also applied to sub-zero temperatures. By means of stress-life (S-N) tests, the fatigue strength of welded structural steels at temperatures down to -50 °C was investigated. In addition, fatigue design concepts for welded joints - based on the micro-structural support effect hypothesis - are extended to sub-zero temperatures.
Subjects
Arctic conditions
Weldment fatigue
Local fatigue assessment methods
Ductile-brittle transition
Temperature dependence of fatigue curves
Finite element analysis
Strain energy density method
Stress averaging approach
DDC Class
620: Ingenieurwissenschaften
Funding Organisations
Stiftung Stahlanwendungsforschung im Stifterverband für die Deutsche Wissenschaft e.V. (A 301/ S 24/10231/15)
Bundesministerium für Wirtschaft und Energie MarTERA ERA-NET Cofound scheme (MarTERA – FATICE (03SX465B))
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Braun_Moritz_Assessment-of-fatigue-strength-of-welded-steel-joints-at-sub-zero-temperatures-based-on-the-micro-structural-support-effect-hypothesis.pdf
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22.41 MB
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